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Filed pursuant to General Instruction II.L of Form F-10
File No. 333-137221
 
(Red Herring and Subject Line Graphic)
This prospectus supplement (the “Prospectus Supplement”), together with the short form base shelf prospectus dated September 15, 2006 to which it relates (the “Prospectus”), and each document incorporated by reference into the Prospectus and this Prospectus Supplement, constitutes a public offering of these securities only in those jurisdictions where they may be lawfully offered for sale and therein only by persons permitted to sell such securities. No securities regulatory authority has expressed an opinion about these securities and it is an offence to claim otherwise.
Information has been incorporated by reference into the Prospectus and this Prospectus Supplement from documents filed with securities commissions or similar authorities in Canada. Copies of the documents incorporated therein by reference may be obtained on request without charge from the Secretary of Pengrowth Corporation at 2900, 240 — 4th Avenue S.W., Calgary, Alberta T2P 4H4, telephone: 1-800-223-4122, or by accessing disclosure documents available through the Internet on the Canadian System for Electronic Document Analysis and Retrieval (SEDAR) at www.sedar.com. For the purposes of the Province of Québec, the Prospectus and this Prospectus Supplement contain information to be completed by consulting the permanent information record. A copy of the permanent information record may be obtained from the Secretary of Pengrowth at the above-mentioned address and telephone number.
 
Preliminary Prospectus Supplement
To the Short Form Base Shelf Prospectus dated September 15, 2006
New Issue November  l , 2006
(LOGO)
PENGROWTH ENERGY TRUST
$      l     
20,000,000 Trust Units
 
We are offering 20,000,000 trust units (“Trust Units”) of Pengrowth Energy Trust (the “Trust”) at a price of $ l  per Trust Unit. The offering price for the Trust Units was determined by negotiation between the Trust and RBC Dominion Securities Inc., BMO Nesbitt Burns Inc., CIBC World Markets Inc., Scotia Capital Inc., National Bank Financial Inc., TD Securities Inc., Merrill Lynch Canada Inc., HSBC Securities (Canada) Inc., Canaccord Capital Corporation, Raymond James Ltd., Sprott Securities Inc., Dundee Securities Corporation, FirstEnergy Capital Corp., Peters & Co. Limited and Tristone Capital Inc. (collectively, the “Underwriters”). We have also granted to the Underwriters an over-allotment option (the “Over-Allotment Option”), exercisable in whole or in part for a period of 30 days from the Closing Date (as defined below), to purchase up to an additional 15% of that number of Trust Units issued at the Closing Date at the price per Trust Unit set out above. See “Plan of Distribution”.
 
Investing in the Trust Units involves risks.  See “Risk Factors” beginning on page S-11 of this Prospectus Supplement and page 17 of the accompanying Prospectus.
 
Neither the United States Securities and Exchange Commission (“SEC”) nor any state securities commission has approved or disapproved of these Trust Units nor passed upon the accuracy or adequacy of this Prospectus Supplement and the Prospectus. Any representation to the contrary is a criminal offence.
 
The outstanding Trust Units are listed and posted for trading on the New York Stock Exchange (“NYSE”) under the symbol “PGH” and on the Toronto Stock Exchange (“TSX”) under the symbol “PGF.UN”. On November 28, 2006, the last trading day prior to the announcement of this offering, the closing price of the Trust Units on the NYSE was US$18.01 per Trust Unit and the closing price of the Trust Units on the TSX was Cdn$20.65 per Trust Unit. The TSX has conditionally approved the listing of the Trust Units offered by this Prospectus Supplement. Listing will be subject to our fulfillment of all the listing requirements of the TSX on or before February 26, 2007.
 
We pay distributions on the 15th day of each month to Unitholders of record on the 10th business day preceding payment. Subscribers for Trust Units will be eligible to receive all distributions commencing January 15, 2007.
 
Further particulars concerning the attributes of the Trust Units are set out under “Description of Trust Units” in the accompanying Prospectus, which provides for the issuance from time to time of up to $2,000,000,000 of Trust Units and/or subscription receipts over a 25-month period. Certain proposed Canadian tax measures that, if enacted, would materially and adversely affect the taxation of the Trust and significantly affect the tax consequences of investing in the Trust Units are set out under “Recent Developments” in this Prospectus Supplement.
 
             
    Price to
  Underwriters’
  Net Proceeds
   
the Public(1)
 
Fee(1)(2)
 
to the Trust(1)(3)
 
Per Trust Unit
  $    l       $    l       $    l    
Total
  $    l       $    l       $    l    
 
 
Notes:
 
(1)  Assuming no exercise of the Over-Allotment Option. In the event the Over-Allotment Option is exercised in full, the gross proceeds to the Trust will increase to $    l    , the Underwriters’ fee will increase to $    l     and the net proceeds to the Trust from the offering will increase to $    l     (before deducting the expenses of this offering).
(2)  The Underwriters’ fee represents l % of the offering price of the Trust Units.
(3)  Before deducting the expenses of this offering estimated to be approximately $    l    .


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The Underwriters, as principals, conditionally offer the Trust Units, subject to prior sale, if, as and when issued by us and accepted by the Underwriters in accordance with the conditions contained in the Underwriting Agreement referred to under “Plan of Distribution”, and subject to the approval of certain legal matters by Bennett Jones LLP on our behalf and by Fraser Milner Casgrain LLP on behalf of the Underwriters. See “Plan of Distribution”.
 
Subscriptions for Trust Units will be received subject to rejection or allotment in whole or in part and we reserve the right to close the subscription books at any time without notice. It is expected that the certificates representing the Trust Units offered by this Prospectus Supplement will be available for delivery at closing. The closing of this offering is anticipated to occur on or about December 7, 2006 or such other date as may be agreed upon by us and the Underwriters (the “Closing Date”), but in any event not later than December 29, 2006. The Underwriters may over-allot or effect transactions which stabilize or maintain the market price for the Trust Units at levels other than those which otherwise might prevail in the open markets. Such transactions, if commenced, may be discontinued at any time. See “Plan of Distribution”.
 
Each of RBC Dominion Securities Inc., BMO Nesbitt Burns Inc., CIBC World Markets Inc., Scotia Capital Inc., National Bank Financial Inc., TD Securities Inc. and HSBC Securities (Canada) Inc. is a subsidiary of a Canadian chartered bank which is one of our lenders and to which we are currently indebted. Consequently, we may be considered to be a connected issuer of such Underwriters for the purposes of securities regulations in certain provinces. The net proceeds from this offering may be used to reduce our indebtedness to such banks. See “Relationship between the Trust and the Underwriters”, “Use of Proceeds” and “Consolidated Capitalization”.
 
We are permitted, under the multi-jurisdictional disclosure system adopted by the United States, to prepare this Prospectus Supplement and the accompanying Prospectus in accordance with Canadian disclosure requirements. You should be aware that such requirements are different from those of the United States. We have prepared our financial statements included or incorporated herein by reference in accordance with Canadian generally accepted accounting principles, and they are subject to Canadian auditing and auditor independence standards. Thus, they may not be comparable to the financial statements of U.S. companies or trusts. Information regarding the impact upon our financial statements of significant differences between Canadian and U.S. generally accepted accounting principles is contained in the notes to our annual consolidated financial statements incorporated by reference in the Prospectus.
 
The SEC permits United States oil and natural gas companies, in their filings therewith, to disclose only proved reserves net of royalties and interests of others that geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions. Canadian securities laws permit oil and natural gas companies, in their filings with Canadian securities regulators, to disclose reserves prior to the deduction of royalties and interests of others, and to disclose probable reserves. Probable reserves are of a higher risk and are generally believed to be less likely to be recovered than proved reserves. Certain reserve information included herein and in the documents incorporated by reference herein to describe our reserves, such as “probable” reserve information, is prohibited in filings with the SEC by U.S. oil and natural gas companies.
 
You should be aware that the purchase, holding or disposition of the Trust Units may subject you to tax consequences both in the United States and Canada. This Prospectus Supplement and the accompanying Prospectus may not describe these tax consequences fully. You should read the tax discussion in this Prospectus Supplement and in the Prospectus fully, and obtain independent tax advice as necessary.
 
Your ability to enforce civil liabilities under U.S. federal securities laws may be affected adversely by the fact that we are formed under the laws of the Province of Alberta, Canada, most of the officers and directors of the Corporation (as defined below) and most of the experts named in this Prospectus Supplement and the Prospectus are residents of Canada, and virtually all of our assets are located outside the United States.
 
You should also be aware that on October 31, 2006, the Minister of Finance (Canada) announced proposed tax measures which, if enacted, would materially and adversely change the manner in which Pengrowth is taxed and would also change the character of the distributions to you for Canadian federal income tax purposes (the “October 31 Proposals”). It is expected that the October 31 Proposals will apply to Pengrowth and its Unitholders commencing in 2011. See “Recent Developments — Proposed Changes to Tax Legislation Affecting Pengrowth and its Unitholders” and “Risk Factors” — The October 31 Proposals, if enacted, are expected to materially and adversely affect Pengrowth, our Unitholders and the value of the Trust Units”.


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The return on an investment in Trust Units is not comparable to the return on an investment in a fixed-income security. The recovery of the initial investment made by a Unitholder is at risk, and the anticipated return on the Unitholder’s investment is based on many performance assumptions. Although we intend to make distributions of a portion of our available cash, these cash distributions may be reduced or suspended. Cash distributions are not guaranteed.  Our ability to make cash distributions and the actual amount distributed will depend on numerous factors including, among other things: financial performance, debt obligations, working capital requirements, future capital requirements and the timing and application of the October 31 Proposals, all of which are susceptible to a number of risks. In addition, the market value of the Trust Units may decline as a result of many factors, including our inability to meet our cash distribution targets in the future and the possibility that the October 31 Proposals could apply to Pengrowth and its Unitholders earlier than 2011, and that decline may be significant. You should also consider the particular risk factors that may affect the industry in which we operate, and therefore the stability of the distributions you would receive. See “Risk Factors” in this Prospectus Supplement and in the Prospectus. This section also describes our assessment of those risk factors, as well as potential consequences to you if a risk should occur.
 
The after-tax return to Unitholders, for Canadian income tax purposes, from an investment in Trust Units can be made up of both a return on, and a return of, capital. That composition may change over time, thus affecting an investor’s after-tax return. Subject to the October 31 Proposals, returns on capital are generally taxed as ordinary income in the hands of a Unitholder who is a resident of Canada for purposes of the Tax Act and are subject to Canadian withholding tax in the hands of a Unitholder who is not a resident of Canada at the rate of 25%, unless such rate is reduced under the provisions of a tax convention between Canada and the jurisdiction of residence of the Unitholder. Pursuant to the October 31 Proposals, provided that the October 31 Proposals do not apply to Pengrowth and its Unitholders earlier, commencing in 2011 certain of our distributions which would otherwise have been taxed, or subject to Canadian withholding tax, as ordinary income to Unitholders will be characterized and taxed as dividends to such Unitholders in addition to being subject to tax at corporate rates at the Trust level and, in the case of a Unitholder who is not a resident of Canada, such deemed dividend will be subject to Canadian withholding tax at the rate of 25%, unless such rate is reduced under the provisions of a tax convention between Canada and the jurisdiction of residence of the Unitholder. Returns of capital are, and will be under the October 31 Proposals, generally tax-deferred for Unitholders who are resident in Canada for purposes of the Tax Act (and reduce such Unitholder’s adjusted cost base in the Trust Units for purposes of the Tax Act). Returns of capital to a Unitholder who is not a resident of Canada for purposes of the Tax Act or is a partnership that is not a “Canadian partnership” for purposes of the Tax Act are, and will be under the October 31 Proposals, subject to a 15% Canadian withholding tax. Prospective Unitholders should consult their own tax advisors with respect to the Canadian income tax considerations in their own circumstances, including the effect of the October 31 Proposals on a prospective investment in Trust Units. See “Distributions” in the Prospectus.
 
The Trust Units are not “deposits” within the meaning of the Canada Deposit Insurance Corporation Act (Canada) and are not insured under the provisions of that Act or any other legislation. Furthermore, we are not a trust company and, accordingly, are not registered under any trust and loan company legislation as we do not carry on, or intend to carry on, the business of a trust company.


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Page
 
  S-4
  S-6
  S-6
  S-8
  S-9
  S-10
  S-11
  S-12
  S-22
  S-23
  S-24
  S-25
  S-25
  S-25
  S-26
  S-26
  S-28
  S-29
 
Schedule A —   Schedules of Revenue, Royalties and Operating Expenses for the CP Assets for the years ended December 31, 2005 and 2004 and the nine months ended September 30, 2006, together with the notes thereto and the report of the auditor thereon
 
Schedule B —   Pengrowth Pro Forma Financial Statements after giving effect to the ConocoPhillips Acquisition and the strategic business combination with Esprit
 
Schedule C —   Pengrowth Base Updated Reserves Information (Constant Pricing)
 
Schedule D —   ConocoPhillips Properties Reserves Information (Constant Pricing)
 
Schedule E —   Pengrowth Pro Forma Reserves Information (Constant Pricing)
 
Schedule F —   Pengrowth Base Updated Reserves Information (Strip Pricing)
 
Schedule G —   ConocoPhillips Properties Reserves Information (Strip Pricing)
 
Schedule H —   Pengrowth Pro Forma Reserves Information (Strip Pricing)
 
Schedule I —   Pricing Assumptions
 
DEFINITIONS, ABBREVIATIONS AND OTHER MATTERS
 
All dollar amounts in this Prospectus Supplement and in the Prospectus are expressed in Canadian dollars, except where otherwise indicated. References to ‘‘$” or “Cdn$” are to Canadian dollars and references to “US$” are to United States dollars.
 
Unless otherwise indicated, all financial information included and incorporated by reference in this Prospectus Supplement or in the Prospectus is determined using Canadian generally accepted accounting principles, which we refer to as “Canadian GAAP”. “U.S. GAAP” means generally accepted accounting principles in the United States. The financial statements incorporated by reference herein and attached hereto have been prepared in accordance with Canadian GAAP, which differs from U.S. GAAP. Therefore, our comparative consolidated financial statements, Esprit Energy Trust’s (“Esprit”) comparative consolidated financial statements, and the pro forma consolidated financial statements after giving effect to the merger with Esprit (which are all incorporated by reference in the Prospectus) as well as the comparative financial statements relating to the CP Assets and the pro forma consolidated financial statements after giving effect to the ConocoPhillips Acquisition and the merger with Esprit (which are attached as Schedules to this Prospectus Supplement) may not be comparable to financial statements prepared in accordance with U.S. GAAP. You should refer to the notes to the above financial statements or the respective reconciliation of the above financial statements to U.S. GAAP for a discussion of the principal differences between our financial results calculated under Canadian GAAP and under U.S. GAAP.
 
In this Prospectus Supplement and the Schedules hereto, the following terms shall have the following meanings:
 
“API” means American Petroleum Institute;
 
“bbl”, “bbls”, “mbbls” and “mmbbls” refers to barrel, barrels, thousands of barrels and millions of barrels, respectively;


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“bblpd” refers to barrels per day;
 
“boe”, “mboe” and “mmboe” refers to barrels of oil equivalent, thousands of barrels of oil equivalent and millions of barrels of oil equivalent, respectively;
 
“boepd” refers to barrels of oil equivalent per day;
 
“ConocoPhillips Acquisition” has the meaning ascribed thereto under the heading “Recent Developments — ConocoPhillips Acquisition” in this Prospectus Supplement;
 
“Corporation” refers to Pengrowth Corporation, a corporation existing under the laws of the Province of Alberta;
 
“CP Assets” has the meaning ascribed thereto under the heading “Recent Developments — ConocoPhillips Acquisition” in this Prospectus Supplement;
 
“GLJ” means GLJ Petroleum Consultants Ltd., independent reserves evaluators;
 
“Gross” with respect to production and reserves refers to the total production and reserves attributable to a property before the deduction of royalties and, with respect to land and wells, refers to the total number of acres or wells, as the case may be, in which Pengrowth has a working interest or a royalty interest;
 
“Mechanical Update” means an update of reserves information making no adjustment to forecast production and costs used from a NI 51-101 compliant report other than changing the effective date such that any forecast production and costs between the NI 51-101 compliant report effective date and the new effective date are excluded. Items that may have changed and, which are not reflected in the Mechanical Update, are items such as reserve additions, changes in operating costs and, to the extent there may be any, performance changes;
 
“$MM” refers to millions of dollars;
 
“mmbtu” refers to a million british thermal units;
 
“mcf ”, “mmcf ” and “bcf ” refers to thousands of cubic feet, millions of cubic feet and billions of cubic feet, respectively;
 
“mmcfpd” refers to millions of cubic feet per day;
 
“NI 51-101” means National Instrument 51-101 Standards of Disclosure for Oil and Gas Activities of the Canadian Securities Administrators;
 
“Net” refers to Pengrowth’s working interest share of production or reserves, as the case may be, after the deduction of royalties, and, with respect to land and wells, refers to Pengrowth’s working interest share therein;
 
“NGLs” refers to natural gas liquids;
 
“October 31 Proposals” has the meaning ascribed thereto on page S-3 of this Prospectus Supplement;
 
“Pengrowth Interest” refers to Pengrowth’s working interest and royalty interest share of reserves before the deduction of royalties;
 
“Probable Reserves” refers to those additional reserves that are less likely to be recovered than Proved Reserves. It is equally likely that the actual remaining quantities recovered will be greater or less than the sum of the estimated Proved Reserves plus Probable Reserves;
 
“Proved Reserves” refers to those reserves that can be estimated with a high degree of certainty to be recoverable. It is likely that the actual remaining quantities recovered will exceed the estimated proved reserves;
 
“Reserves” refers to estimated remaining quantities of oil and natural gas and related substances anticipated to be recovered from known accumulations, from a given date forward, based on: (i) analysis of drilling, geological, geophysical and engineering data; (ii) the use of established technology; and (iii) specified economic conditions which are generally accepted as being reasonable and shall be disclosed. Reserves are classified according to the degree of certainty associated with the estimate;
 
“royalty interest” refers to an interest in an oil and gas property consisting of a royalty granted in respect of production from the property;
 
“Total Proved Plus Probable Reserves” means the aggregate of Proved Reserves and Probable Reserves before the deduction of royalties; and
 
“Tax Act” refers to the Income Tax Act (Canada), and the regulations promulgated thereunder, as amended from time to time;


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“Trust” refers to Pengrowth Energy Trust, an oil and gas royalty trust existing under the laws of the Province of Alberta;
 
Trust Unit” refers to a trust unit of the Trust, but does not include the Class A trust units of the Trust;
 
“Unitholders” refers to the holders of Trust Units and, to the extent the context requires, the Class A trust units of the Trust; and
 
“we”, “us”, “our” and “Pengrowth” refer to Pengrowth Energy Trust and Pengrowth Corporation on a consolidated basis as the context requires.
 
“working interest” refers to the percentage of undivided interest held by Pengrowth in an oil and gas property.
 
References in this Prospectus Supplement and the Schedules hereto to boe, mboe and mmboe may be misleading, particularly if used in isolation. A conversion ratio of 6 mcf of natural gas to one barrel of crude oil equivalent is based on an energy equivalency conversion method primarily applicable at the burner tip and does not represent a value equivalency at the wellhead.
 
IMPORTANT NOTICE ABOUT INFORMATION IN
THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS
 
This document is in two parts. The first part is this Prospectus Supplement, which describes the specific terms of the Trust Units we are offering and adds to and updates certain information contained in the accompanying Prospectus and the documents incorporated by reference therein. The second part, the accompanying Prospectus, gives more general information, some of which may not apply to the Trust Units we are offering.
 
This Prospectus Supplement is deemed to be incorporated by reference into the accompanying Prospectus solely for the purposes of the offering of the Trust Units offered hereby. Other documents are also incorporated by reference or deemed to be incorporated by reference into the Prospectus. See “Documents Incorporated by Reference in the Prospectus” herein for a list of all documents incorporated by reference herein and in the Prospectus.
 
DOCUMENTS INCORPORATED BY REFERENCE IN THE PROSPECTUS
 
Information has been incorporated by reference in the Prospectus from documents filed with securities commissions or similar authorities in Canada and with the SEC in the United States. Copies of the documents incorporated by reference may be obtained on request without charge from the Secretary of the Corporation at 2900, 240 – 4th Avenue S.W., Calgary, Alberta T2P 4H4 (telephone: 1-800-223-4122). For the purpose of the Province of Québec, the Prospectus and this Prospectus Supplement contain information to be completed by consulting the permanent information record. A copy of the permanent information record may be obtained from the Secretary of the Corporation at the above-mentioned address and telephone number. These documents are also available through the internet on the System for Electronic Document Analysis and Retrieval (SEDAR) which can be accessed at www.sedar.com.
 
The following documents of the Trust filed with securities commissions or similar authorities in each of the provinces of Canada and the SEC are incorporated by reference into the Prospectus:
 
  (a)  the annual information form of the Trust dated March 29, 2006 for the year ended December 31, 2005;
 
  (b)  the Information Circular — Proxy Statement dated May 16, 2006 for the annual and special meeting of Unitholders held on June 23, 2006;
 
  (c)  the revised Management’s Discussion and Analysis for the year ended December 31, 2005, which was filed on SEDAR on September 15, 2006;
 
  (d)  the comparative consolidated annual financial statements for the year ended December 31, 2005, together with the notes thereto and the report of the auditors thereon;
 
  (e)  Management’s Discussion and Analysis for the period ended September 30, 2006;
 
  (f)  the comparative consolidated interim financial statements for the period ended September 30, 2006, together with the notes thereto;
 
  (g)  the comparative consolidated interim financial statements of Esprit for the period ended September 30, 2006, together with the notes thereto, which were filed on SEDAR under the category “Other” on November 28, 2006;
 
  (h)  the material change report dated August 2, 2006 (with respect to the merger with Esprit);


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  (i)  the material change report dated August 8, 2006 (with respect to the consolidation of the then outstanding Class A trust units and Class B trust units of the Trust);
 
  (j)  the material change report dated September 8, 2006 (with respect to the merger with Esprit, including the consolidated pro forma financial statements of the Trust after giving effect to the merger with Esprit);
 
  (k)  the material change report dated September 18, 2006 (with respect to the acquisition of certain assets in the Carson Creek area of Alberta (the ‘‘Carson Creek Acquisition”));
 
  (l)  the material change report dated September 20, 2006 (with respect to the Carson Creek Acquisition), which amends and supplements the Prospectus;
 
  (m)  the material change report dated October 6, 2006 (with respect to the closing of our September 28, 2006 offering of Trust Units);
 
  (n)  the material change report dated November 8, 2006 (with respect to our offer to purchase all of our outstanding 6.5% convertible extendible unsecured subordinated debentures);
 
  (o)  the business acquisition report dated October 31, 2006 (with respect to the merger with Esprit, including the consolidated pro forma financial statements of the Trust after giving effect to the merger with Esprit);
 
  (p)  the disclosure of the Trust’s oil and gas producing activities prepared in accordance with SFAS No. 69 — “Disclosure about Oil and Gas Producing Activities”, which was filed on SEDAR under the category “Other” on September 15, 2006;
 
  (q)  the reconciliation of the financial statements of the Trust for the nine months ended September 30, 2006 and for the years ended December 31, 2005 and 2004 to U.S. GAAP, which was filed on SEDAR under the category “Other” on November 28, 2006;
 
  (r)  the reconciliation of the financial statements of Esprit for the nine months ended September 30, 2006 to U.S. GAAP, which was filed on SEDAR under the category “Other” on November 28, 2006; and
 
  (s)  the material change report dated November 29, 2006 (with respect to the ConocoPhillips Acquisition), which amends and supplements the Prospectus.
 
Any statement in the Prospectus or any document incorporated or deemed to be incorporated by reference therein, for the purposes of the offering of the Trust Units offered hereby, shall be deemed to be modified or superseded to the extent that a statement contained in this Prospectus Supplement or in any other subsequently filed document that also is, or is deemed to be, incorporated by reference in this Prospectus Supplement or the accompanying Prospectus modifies or supersedes that statement. The modifying or superseding statement need not state that it has modified or superseded a prior statement or include any other information set forth in the document that it modifies or supersedes. The making of a modifying or superseding statement is not to be deemed an admission for any purposes that the modified or superseded statement, when made, constituted a misrepresentation, an untrue statement of a material fact or an omission to state a material fact that is required to be stated or that is necessary to make a statement not misleading in light of the circumstances in which it was made. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to be incorporated by reference herein or to constitute a part of this Prospectus Supplement or the accompanying Prospectus.
 
To the extent that any document or information incorporated by reference herein or into the Prospectus is included in any report on Form 6-K, Form 40-F, Form 20-F, Form 10-K, Form 10-Q or Form 8-K (or any respective successor form) that is filed with or furnished to the SEC, such document or information shall be deemed to be incorporated by reference as an exhibit to the registration statement of which this Prospectus Supplement forms a part. In addition, we may incorporate by reference into this Prospectus Supplement and the Prospectus information from documents that we file with or furnish to the SEC pursuant to Section 13(a) or 15(d) of the United States Securities Exchange Act of 1934, as amended.
 
You should rely only on the information contained in or incorporated by reference in this Prospectus Supplement and the accompanying Prospectus. We have not, and the Underwriters have not, authorized anyone to provide you with different or additional information. We are not, and the Underwriters are not, making an offer of these Trust Units in any jurisdiction where the offer is not permitted by law. You should assume that the information contained in this Prospectus Supplement and the accompanying Prospectus, as well as information we previously filed with the SEC and with the securities commissions in each of the provinces of Canada and incorporated by reference in the accompanying Prospectus, is accurate as of its respective date only. Our business, financial condition, results of operations and prospects may have changed since those dates.


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FORWARD-LOOKING STATEMENTS
 
Certain statements contained in this Prospectus Supplement, the accompanying Prospectus and the documents incorporated by reference herein and therein, constitute “forward-looking statements” within the meaning of securities laws, including the “safe harbour” provisions of the Securities Act (Ontario), the United States Private Securities Litigation Reform Act of 1995, section 21E of the United States Securities Exchange Act of 1934, as amended, and section 27A of the United States Securities Act of 1933, as amended. These statements relate to future events or our future performance. All statements, other than statements of historical fact, are forward-looking statements. The use of any of the words “anticipate”, “continue”, “estimate”, “expect”, “may”, “will”, “project”, “should”, “believe” and similar expressions are intended to identify forward-looking statements. These statements involve known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in our forward-looking statements. We believe the expectations reflected in those forward-looking statements are reasonable. However, we cannot assure you that these expectations will prove to be correct. You should not unduly rely on forward-looking statements included, or incorporated by reference, in this Prospectus Supplement or the Prospectus.
 
In particular, this Prospectus Supplement, the Prospectus and the documents incorporated by reference therein contain forward-looking statements pertaining to the following:
 
  •  the use of proceeds from any offering made under this Prospectus Supplement and the Prospectus;
 
  •  the size of our oil and natural gas reserves;
 
  •  the performance characteristics of our oil and natural gas properties;
 
  •  oil and natural gas production levels;
 
  •  estimated future cash flow;
 
  •  estimated future distributions;
 
  •  capital expenditure programs and the method and timing of the financing thereof;
 
  •  drilling plans and timing of drilling, recompletion and tie-in of wells;
 
  •  projections of market prices and costs and the related sensitivities of distributions;
 
  •  supply of, and demand for, oil and natural gas;
 
  •  weighting of production between different commodities;
 
  •  expectations regarding the ability to raise capital and to continually add to reserves through acquisitions and development;
 
  •  expected levels of royalty rates, operating costs, general and administrative costs, costs of services and other costs and expenses; and
 
  •  treatment under governmental regulatory regimes and tax laws.
 
Our actual results could differ materially from those anticipated in these forward-looking statements as a result of the risk factors set forth below and elsewhere in this Prospectus Supplement, the Prospectus or the documents incorporated by reference therein:
 
  •  actions by governmental or regulatory authorities, including changes in income tax laws or changes in tax laws (including the application of the October 31 Proposals to Pengrowth and its Unitholders — see “Recent Developments” in this Prospectus Supplement) and incentive programs relating to the oil and gas industry and royalty trusts;
 
  •  volatility in market prices for oil and natural gas;
 
  •  liabilities inherent in our oil and gas operations;
 
  •  adverse regulatory rulings, orders and decisions;
 
  •  uncertainties associated with estimating reserves;
 
  •  competition for, among other things, capital, reserves, undeveloped lands, skilled personnel and access to services;
 
  •  fluctuation in foreign exchange or interest rates;
 
  •  incorrect assessments of the value of our acquisitions and exploration and development programs;


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  •  stock market volatility and market fluctuations;
 
  •  geological, technical, drilling and processing problems and other difficulties in producing reserves; and
 
  •  the other factors discussed under “Risk Factors” in this Prospectus Supplement and in the Prospectus (including the application of the October 31 Proposals to Pengrowth and its Unitholders) and under the heading “Business Risks” in our revised management’s discussion and analysis for the year ended December 31, 2005, as may be updated from time to time in our interim management’s discussion and analysis.
 
Statements relating to “reserves” or “resources” are deemed to be forward-looking statements, as they involve the implied assessment, based on certain estimates and assumptions, that the resources and reserves described can be profitably produced in the future.
 
Readers are cautioned that the foregoing lists of factors are not exhaustive. When relying on our forward-looking statements to make decisions with respect to Pengrowth, investors and others should carefully consider the foregoing factors and other uncertainties and potential events. Furthermore, the forward-looking statements contained in this Prospectus Supplement, the Prospectus, including documents incorporated by reference therein, are made only as of the date of such document and Pengrowth does not undertake any obligation to update publicly or to revise any of the included forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable securities laws. The forward-looking statements contained in this Prospectus Supplement, the Prospectus and the documents incorporated by reference therein are expressly qualified by this cautionary statement.
 
WHERE YOU CAN FIND MORE INFORMATION
 
We have filed with the SEC a registration statement on Form F-10 relating to the Trust Units, of which this Prospectus Supplement and the Prospectus form a part. This Prospectus Supplement does not contain all of the information contained in the registration statement, certain items of which are contained in the exhibits to the registration statement as permitted by the rules and regulations of the SEC. For further information about Pengrowth and the Trust Units, please refer to the registration statement.
 
We file annual and quarterly financial information and material change reports and other material with the SEC and with the securities commission or similar regulatory authority in each of the provinces of Canada. Under the multi-jurisdictional disclosure system adopted by the United States, documents and other information that we file with the SEC may be prepared in accordance with the disclosure requirements of Canada, which are different from those of the United States. You may read and copy any document that we have filed with the SEC at the SEC’s public reference rooms in Washington, D.C. and Chicago, Illinois. You may also obtain copies of those documents from the public reference room of the SEC at 100 F Street, N.E., Washington, D.C. 20549 by paying a fee. You should call the SEC at 1-800-SEC-0330 or access its website at www.sec.gov for further information about the public reference rooms. You may read and download some of the documents we have filed with the SEC’s Electronic Data Gathering and Retrieval (EDGAR) system at www.sec.gov. You may read and download any public document that we have filed with the securities commissions or similar authorities in each of the provinces of Canada at www.sedar.com.


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CURRENCY EXCHANGE RATES
 
The financial statements included or incorporated by reference in this Prospectus Supplement and the Prospectus are in Canadian dollars, unless otherwise indicated. The following table sets forth, for each period indicated, the high and low exchange rates, the average of such exchange rates during such period, and the exchange rate at the end of such period, based on the daily noon rate of exchange as reported by the Federal Reserve Bank of New York. These rates are set forth as United States dollars per Cdn$1.00 and are the inverse of the rates quoted by the Federal Reserve Bank of New York for Canadian dollars per US$1.00. On November 29, 2006, the noon exchange rate was Cdn$1.00 equals US$0.8806.
 
                                 
    Nine Months Ended
    Year Ended
 
    September 30 ($)     December 31 ($)  
    2006     2005     2005     2004  
 
High
    0.9100       0.8615       0.8690       0.8493  
Low
    0.8528       0.7872       0.7872       0.7158  
Average
    0.8831       0.8171       0.8254       0.7682  
Period Ended
    0.8966       0.8613       0.8579       0.8310  


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RISK FACTORS
 
An investment in the Trust Units is subject to various risks including those risks inherent to the industries in which we operate. If any of these risks occur, our production, revenues and financial condition could be materially harmed, with a resulting decrease in distributions on, and the market price of, our Trust Units. As a result, the trading price of our Trust Units could decline, and you could lose all or part of your investment.
 
Before deciding whether to invest in any Trust Units, investors should consider carefully the risks set out below and in the Prospectus under the heading “Risk Factors” and in any documents incorporated by reference therein.
 
The October 31 Proposals, if enacted, are expected to materially and adversely affect Pengrowth, our Unitholders and the value of the Trust Units.
 
It is expected that the October 31 Proposals, if enacted in their currently proposed form, will subject Pengrowth to trust level taxation beginning on January 1, 2011, which will materially reduce the amount of cash available for distributions to our Unitholders. Based on the proposed Canadian federal income tax and tax rates on account of provincial tax, Pengrowth estimates that the enactment of the October 31 Proposals will, commencing on January 1, 2011, reduce the amount of cash available to Pengrowth to distribute to its Unitholders by an amount equal to 31.5% multiplied by the amount of the pre-tax income distributed by Pengrowth. A reduction in the value of the Trust Units would be expected to increase the cost to Pengrowth of raising capital in the public capital markets. In addition, the October 31 Proposals are expected to substantially eliminate the competitive advantage Pengrowth currently enjoys compared to corporate competitors in raising capital in a tax efficient manner, while placing Pengrowth at a competitive disadvantage compared to industry competitors, including U.S. master limited partnerships, which will continue not to be subject to entity-level taxation. The October 31 Proposals are also expected to make the Trust Units less attractive as an acquisition currency. As a result, it may be more difficult for Pengrowth to compete effectively for acquisition opportunities in the future. There can be no assurance that Pengrowth will be able to reorganize its legal and tax structure to reduce the expected impact of the October 31 Proposals.
 
In addition, there can be no assurance that Pengrowth will be able to maintain its grandfathered status under the October 31 Proposals until 2011. If the Trust is deemed to have undergone “undue expansion” during the transitional period from October 31, 2006 to December 31, 2010, the October 31 Proposals would become effective on a date earlier than January 1, 2011. There can be no assurance that the ConocoPhillips Acquisition will not constitute undue expansion of Pengrowth. Pengrowth has received, from the Department of Finance (Canada), a comfort letter from the Department of Finance (Canada) to the effect that, subject to certain qualifications, a ConocoPhillips Acquisition would not be treated as undue expansion under the October 31 Proposals. However, such comfort letter is subject to certain qualifications and the contents thereof are not binding. Any undue expansion of Pengrowth, whether as a result of the ConocoPhillips Acquisition or otherwise, may result in the loss of grandfathered status. In any such event, the adverse effects of the October 31 Proposals would be accelerated and would materially and adversely affect Pengrowth and its Unitholders earlier than anticipated. In addition, loss of grandfathered status could have a material and adverse effect on the value of the Trust Units. See “Recent Developments — Proposed Changes to Canadian Tax Legislation Affecting Pengrowth and its Unitholders.”
 
No assurance can be given as to the final provisions of any legislation that may be enacted to implement the October 31 Proposals. The terms of such provisions may differ from those of the October 31 Proposals described herein, possibly in ways that would be materially adverse to Pengrowth and the Unitholders.
 
Pengrowth may not be able to achieve the anticipated benefits of the ConocoPhillips Acquisition, and the integration process may result in the loss of key employees and the disruption of ongoing business, customer and employee relationships.
 
Achieving the benefits of the ConocoPhillips Acquisition depends in part on successfully consolidating functions and integrating operations, procedures and personnel in a timely and efficient manner, as well as the ability of Pengrowth to realize the anticipated growth opportunities and synergies from acquiring the CP Assets and to achieve certain assumed commodity prices. The integration of the CP Assets requires the dedication of substantial management time and resources, which may divert management’s focus and resources from other strategic opportunities and from operational matters during this process. The integration process may result in the loss of key employees and the disruption of ongoing business, customer and employee relationships that may adversely affect Pengrowth’s ability to achieve the anticipated benefits of the ConocoPhillips Acquisition.


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If the ConocoPhillips Acquisition is not consummated, the Trust may not be able to find alternative uses of the proceeds of this offering that will enable it to sustain distributions at anticipated levels.
 
This offering is not conditioned upon the consummation of the ConocoPhillips Acquisition and will close prior to the consummation of that transaction. The consummation of the ConocoPhillips Acquisition is subject to a number of conditions. The Trust believes that these conditions are achievable and that it is likely that the ConocoPhillips Acquisition will be consummated. However, if the ConocoPhillips Acquisition is not consummated, the Trust will have issued additional Trust Units without an identified use of proceeds to generate incremental cash flow for distributions on such Trust Units. No assurance can be given that, if the ConocoPhillips Acquisition is not consummated, the Trust will be able to identify uses of proceeds sufficient to sustain distributions on the Trust Units at anticipated levels.
 
The ConocoPhillips Acquisition will materially increase our indebtedness, which may adversely affect our distributions.
 
To complete the ConocoPhillips Acquisition, in addition to utilizing the net proceeds of this offering, we will borrow $647 million pursuant to a bridge credit facility that is available to us until the date that is 12 months from the closing of the ConocoPhillips Acquisition (the “Bridge Credit Facility”), resulting in a material increase to Pengrowth’s indebtedness. See “Consolidated Capitalization”. A portion of our cash flow from operations will be dedicated to the payment of interest on our indebtedness, including the Bridge Credit Facility and our other indebtedness, thereby reducing funds available for distribution. At maturity, Pengrowth must repay or refinance its indebtedness. Our ability to make scheduled payments of principal and interest on, or to refinance, our indebtedness will depend on future operating performance and cash flow, which are subject to prevailing economic conditions, oil, natural gas and NGLs pricing, prevailing interest rate levels, and financial, competitive, business and other factors, many of which are beyond our control. Variations in exchange rates, interests and scheduled principal repayments could result in significant changes in the amount we are required to apply to service our debt, which may have a material adverse effect on our ability to pay distributions. Certain covenants in the agreements with our lenders may also limit the amount of the royalty paid by the Corporation to the Trust and the distributions paid by us to our Unitholders. If we become unable to pay our debt service charges or an event of default otherwise occurs, our lenders may foreclose on, or sell, our properties. The net proceeds of any such sale will be allocated firstly, to the repayment of our lenders and other creditors and only the remainder, if any, will be payable to the Trust by the Corporation.
 
RECENT DEVELOPMENTS
 
Proposed Changes to Canadian Tax Legislation Affecting Pengrowth and its Unitholders
 
On October 31, 2006, the Minister of Finance (Canada) announced the October 31 Proposals which, if enacted, would modify the taxation of certain flow-through entities including mutual fund trusts and their unitholders. The October 31 Proposals will apply to a “specified investment flow-through” (“SIFT”) trust and will apply a tax at the trust level on distributions of certain income from such SIFT trust at a rate of tax comparable to the combined federal and provincial corporate tax rate. Such distributions will be treated as dividends to the trust unitholders.
 
The October 31 Proposals characterize a trust as a SIFT trust if the trust meets the following criteria: (i) the trust is resident in Canada; (ii) the units of the trust are listed on a stock exchange; and (iii) the trust holds one or more “non-portfolio properties”.
 
Non-portfolio property of a trust includes certain Canadian resource property (which includes property, the value of which is derived principally from Canadian resource property) and investments in certain “subject entities”. An investment by a trust in a subject entity will be a non-portfolio property if the investment meets either (or both) of the following tests:
 
  •  The trust holds securities of the entity that have a total fair market value that is greater than 10% of the entity’s “equity value”. For this purpose an entity’s equity value is the fair market value of all of the issued and outstanding shares or interests in the entity.
 
  •  The trust holds securities of the entity that, together with all of the securities that the trust holds of entities affiliated with the entity, have a total fair market value that is greater than 50% of the equity value of the trust itself.
 
Assuming that the detailed legislation relating to the October 31 Proposals is released and enacted in accordance with the October 31 Proposals, the implementation of such proposals would be expected to result in material and adverse tax


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consequences to Pengrowth and its Unitholders (most particularly investors that are tax exempt or non-residents of Canada). Such tax consequences would be materially different than the consequences described in the Prospectus under the heading “Certain Canadian Income Tax Considerations” and would be expected to materially and adversely affect cash distributions from Pengrowth. In simplified terms, the principal Canadian federal income tax considerations arising from the October 31 Proposals are as follows:
 
  •  Status of Pengrowth  — It is expected that Pengrowth will be characterized as a SIFT trust and as a result would be subject to the October 31 Proposals. The October 31 Proposals are to apply commencing January 1, 2007 for all SIFT trusts that begin to be publicly traded after October 31, 2006 and commencing January 1, 2011 for all SIFT trusts that were publicly traded on or before October 31, 2006. Subject to the qualification below regarding the possible loss of the four year grandfathering period in the case of “undue expansion”, it is expected that Pengrowth will not be subject to the October 31 Proposals until January 1, 2011.
 
  •  Taxation of Pengrowth — Under the existing provisions of the Tax Act, Pengrowth can generally deduct in computing its income for a taxation year any amount of the income that it distributes to Unitholders in the year and, on that basis, Pengrowth is generally not liable for any material amount of tax.
 
Pursuant to the October 31 Proposals, commencing January 1, 2011 (subject to the qualification below regarding the possible loss of the four year grandfathering period in the case of “undue expansion”), Pengrowth will not be able to deduct certain of its distributed income (referred to herein as “specified income”). Pengrowth will become subject to a distribution tax on such specified income at a special rate estimated to be 31.5%, being a rate of tax equivalent to the general federal corporate income tax rate of 18.5% (such rate may be greater if Pengrowth does not meet the qualification regarding “undue expansion” and this does not qualify for the full four year grandfathering period prior to 2011) and an additional income tax of 13% on account of provincial taxes. The October 31 Proposals characterize specified income to include: (i) income (other than dividends that Pengrowth could, if it were a corporation, deduct under the Tax Act) from Pengrowth’s non-portfolio properties; and (ii) taxable capital gains from Pengrowth’s dispositions of non-portfolio properties.
 
Pursuant to the October 31 Proposals, the distribution tax will only apply in respect of distributions of income and will not apply to returns of capital.
 
  •  Taxation of Unitholders Resident in Canada — Under the existing provisions of the Tax Act, a Unitholder that is a resident of Canada for purposes of the Tax Act is generally required to include in computing income for a particular taxation year that portion of the net income of Pengrowth that is paid or payable to the Unitholder in that taxation year and such income to the Unitholder will generally be considered to be ordinary income from property.
 
Pursuant to the October 31 Proposals, amounts in respect of Pengrowth’s income payable to Unitholders that is not deductible by Pengrowth will be treated as a taxable dividend from a taxable Canadian corporation. Dividends received or deemed to be received by an individual (other than certain trusts) will be included in computing the individual’s income for tax purposes and will be subject to the proposed enhanced gross-up and dividend tax credit rules under the Tax Act (and proposed amendments thereto) normally applicable to dividends received from taxable Canadian corporations. Dividends received or deemed to be received by a holder that is a corporation will generally be deductible in computing the corporation’s taxable income. Certain corporations, including private corporations or subject corporations (as such terms are defined in the Tax Act), may be liable to pay a refundable tax under Part IV of the Tax Act of 33 1/3% on dividends received or deemed to be received to the extent that such dividends are deductible in computing taxable income. Unitholders that are trusts governed by registered retirement savings plans, registered retirement income funds, registered education savings plans and deferred profit sharing plans as defined in the Tax Act (referred to herein as “Exempt Plans”) will generally continue not to be liable for tax in respect of any distributions received from Pengrowth. Although the October 31 Proposals will not increase the tax payable by Exempt Plans in respect of dividends deemed to be received from Pengrowth, it is expected that the imposition of tax at the Pengrowth level under the October 31 Proposals will materially reduce the amount of cash available for distributions to Unitholders.
 
Returns of capital are, and will be under the October 31 Proposals, generally tax deferred for Unitholders who are resident in Canada for purposes of the Tax Act and will reduce such Unitholder’s adjusted cost base in the Trust Units for purposes of the Tax Act.


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  •  Taxation of Unitholders who are Non-Residents of Canada (“Non-Resident Unitholders”) — Under the existing provisions of the Tax Act, any distribution of income by Pengrowth to a Non-Resident Unitholder will be subject to Canadian withholding tax at the rate of 25% unless such rate is reduced under the provisions of a convention between Canada and the Non-Resident Unitholder’s jurisdiction of residence. A Non-Resident Unitholder resident in the United States who is entitled to claim the benefit of the Canada-United States Tax Convention, 1980 (the “Canada-US Convention”), will generally be entitled to have the rate of withholding reduced to 15% of the amount of any income distributed.
 
Pursuant to the October 31 Proposals, amounts in respect of Pengrowth’s income payable to Non-Resident Unitholders that are not deductible to Pengrowth will be treated as a taxable dividend from a taxable Canadian corporation. Such dividends will be subject to Canadian withholding tax at a rate of 25%, unless such rate is reduced under the provisions of a convention between Canada and the Non-Resident Unitholder’s jurisdiction of residence. A Non-Resident Unitholder resident in the United States who is entitled to claim the benefit of the Canada-US Convention generally will be entitled to have the rate of withholding reduced to 15% of the amount of such dividend. Although the October 31 Proposals may not increase the tax payable by Non-Resident Unitholders in respect of dividends deemed to be paid by Pengrowth, it is expected that the imposition of tax at the Pengrowth level under the October 31 Proposals will materially reduce the amount of cash available for distributions to Unitholders.
 
Returns of capital to a Unitholder who is not a resident of Canada for purposes of the Tax Act or is a partnership that is not a “Canadian partnership” for purposes of the Tax Act are, and will be under the October 31 Proposals, subject to a 15% Canadian withholding tax.
 
Subject to certain limitations set forth in the United States Internal Revenue Code of 1986, as amended, United States holders (as such term is defined in the Prospectus) may elect to claim a foreign tax credit against their United States federal income tax liability for net Canadian income tax withheld from distributions received in respect of Trust Units that is not refundable to the United States holder and for any Canadian income taxes paid by us. The October 31 Proposals will apply a tax at the trust level on distributions of certain income from a SIFT trust. It is unclear whether this tax will constitute an income tax or a tax imposed “in lieu” thereof for purposes of the foreign tax credit rules; if it does not constitute such a tax it will not be creditable. The limitation on foreign taxes eligible for credit is calculated separately with respect to specific classes of income. For taxable years beginning after December 31, 2006, the portion of our distributions with respect to Trust Units that represents income for United States federal income tax purposes will be “passive category income” or “general category income” for purposes of computing the foreign tax credit allowable to a United States holder. If the tax at the trust level on distributions of certain income from a SIFT trust constitutes a creditable tax, the portion of such distributions that represents income for United States federal income tax purposes likely would be “general category income” for purposes of computing the foreign tax credit allowable to a United States holder. The rules and limitations relating to the determination of the foreign tax credit are complex and prospective purchasers are urged to consult their own tax advisors to determine whether or to what extent they would be entitled to such credit. United States persons that do not elect to claim foreign tax credits may instead claim a deduction for their share of Canadian income taxes paid by us or withheld from distributions by us. This Prospectus Supplement and the accompanying Prospectus may not describe the United States tax consequences of the purchase, holding or disposition of the Trust Units fully. You should read the tax discussion in this Prospectus Supplement and in the Prospectus fully, and obtain independent tax advice as necessary.
 
The October 31 Proposals permit “normal growth” for SIFT trusts throughout the transitional period between October 31, 2006 and December 31, 2010. However, “undue expansion” of a SIFT trust could cause the transitional relief to be revisited, and the October 31 Proposals to be effective at a date earlier than January 1, 2011.
 
On November 6, 2006, Pengrowth requested a “comfort letter” from the Department of Finance (Canada) seeking clarification on whether the ConocoPhillips Acquisition would constitute an “undue expansion” of Pengrowth and thus potentially reduce the four year grandfathering period with respect to the application of the October 31 Proposals. On November 10, 2006, Pengrowth received a response from the Department of Finance (Canada) (the “comfort letter”) that stated, subject to certain reasonable and customary qualifications, that based upon the advanced state of the ConocoPhillips Acquisition as at October 31, 2006, including the payment by Pengrowth of an “exclusivity fee”, the ConocoPhillips Acquisition would not be considered outside the scope of normal growth and thus the October 31 Proposals would not apply to Pengrowth and its Unitholders earlier than 2011 solely as a result of the ConocoPhillips


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Acquisition and related financing transactions. It should be noted that the comfort letter is subject to Pengrowth being able to finance the ConocoPhillips Acquisition in substantially the manner described in “Recent Developments — ConocoPhillips Acquisition”. The comfort letter also states that the recommendations in the letter are not binding on the Minister of Finance (Canada) or Parliament. Pengrowth, in consultation with its counsel, is of the view that it is reasonable to rely on the comfort letter in concluding that under the October 31 Proposals, the ConocoPhillips Acquisition (including the proposed manner in which such acquisition will be financed) will not be undue expansion of Pengrowth. However, no assurance can be given in this regard.
 
In addition, the October 31 Proposals state that such proposals may be modified at any time with immediate effect to counter any structures which frustrate the policy objectives of the October 31 Proposals.
 
If enacted, the October 31 Proposals will likely have a material and adverse impact on Pengrowth and its Unitholders. If the issuance of Trust Units pursuant to this offering to finance the ConocoPhillips Acquisition constitutes an undue expansion of Pengrowth, resulting in the October 31 Proposals being applicable prior to 2011, Pengrowth, its Unitholders and the value of the Trust Units will be further adversely and materially affected. In the absence of legislation implementing the October 31 Proposals, the implications of the October 31 Proposals are difficult to fully evaluate and no assurance can be provided as to the extent and timing of their application to Pengrowth and its Unitholders. Prospective Unitholders are urged to consult their own tax advisors having regard to their own particular circumstances including the impact of the October 31 Proposals on Pengrowth and Unitholders. See “Risk Factors — The October 31 Proposals, if enacted, are expected to materially and adversely affect Pengrowth, our Unitholders and the value of the Trust Units.
 
ConocoPhillips Acquisition
 
Background
 
Pengrowth advanced a non-binding expression of interest dated September 26, 2006 for the CP Assets offered by Tristone Capital Inc. through a selective auction process. Negotiations ensued between Burlington Resources Canada Ltd. (“Burlington”) and Pengrowth on the terms of a share purchase and sale agreement to be entered into among the Corporation, 1275708 Alberta Ltd. (“Pengrowth Subsidiary”), a wholly owned subsidiary of the Corporation, and Burlington relating to the CP Assets (the “Share Purchase Agreement”). Pending receipt of financial information concerning the CP Assets as required by applicable Canadian securities laws and the resolution of outstanding issues under the Share Purchase Agreement, Pengrowth and Burlington entered into an exclusivity agreement on October 27, 2006 (the “Exclusivity Agreement”) whereby Pengrowth paid an exclusivity fee of $30 million to Burlington in order to negotiate exclusively with Burlington. The Exclusivity Agreement was extended several times following the announcement of the October 31 Proposals in order to permit the parties to negotiate appropriate terms to the Share Purchase Agreement. The final Share Purchase Agreement was agreed to and executed on November 28, 2006, at which time Pengrowth paid a deposit of $73.75 million to Burlington, which, together with the exclusivity fee, will be applied against payment of the purchase price at closing of the ConocoPhillips Acquisition.
 
The Share Purchase Agreement contemplates that Pengrowth Subsidiary will purchase all of the shares of 1265702 Alberta ULC, 1265704 Alberta ULC, 1265706 Alberta ULC and 1265707 Alberta ULC (collectively, the “CP Subsidiaries”) from Burlington for a purchase price of $1.0375 billion (the ‘‘ConocoPhillips Acquisition”), subject to adjustment in respect of working capital, net revenue from the adjustment date of November 1, 2006 to the closing date, and interest on the purchase price from November 1, 2006 to the closing date. Closing of the acquisition is anticipated to occur on January 18, 2007. Upon closing, Pengrowth will assume various liabilities including abandonment liability for the CP Assets, the present value of which is estimated to be $95 million, assuming a discount rate of 8%. These liabilities were considered by Pengrowth in the negotiation of the purchase price.
 
Summary of CP Assets
 
The CP Assets include oil and natural gas producing properties in the Lethbridge, Southeast Alberta, Fenn Big Valley, Harmattan, West Central Alberta and Red Earth areas of Alberta and the Freefight area of Saskatchewan encompassing approximately 520,000 gross acres (343,000 net) of developed lands. When completed, the ConocoPhillips Acquisition will increase our total proved reserves by 51.4 mmboe and total proved plus probable reserves by approximately 65.8 mmboe (on a company interest before royalties basis using constant pricing) and before the divestiture of properties pursuant to our asset rationalization program. When acquired by the Pengrowth Subsidiary, the CP Subsidiaries will own and control Canadian oil and natural gas properties and undeveloped land which currently produce approximately 21,625 boepd, (before royalties), comprised of 42% crude oil, 52% natural gas and 6% NGLs (the


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“CP Assets”). When completed, the ConocoPhillips Acquisition is expected to increase Pengrowth’s overall current production by approximately 27% to approximately 100,000 boepd (before royalties and before the expected divestiture of certain properties pursuant to Pengrowth’s asset rationalization program. See “Recent Developments — Asset Rationalization Program”). The following is a summary description of the CP Assets:
 
Lethbridge
 
  •  current production of 9.8 mmcfpd of gas
 
  •  high working interest operated production (87% average working interest)
 
  •  multi-zone shallow gas with large land position (180,000 net acres)
 
  •  development and down spacing opportunities
 
Southeast Alberta
 
  •  current production of 4,302 bpd of heavy to medium oil, 19.2 mmcfpd of gas and 26 bpd of NGLs
 
  •  large pool infill drilling optimization potential for Glauconitic and Sunburst oil
 
  •  infill drilling potential for shallow gas
 
  •  lifting costs of $10.79 per boe and 161,000 acres of net land
 
  •  47% average working interest
 
Fenn Big Valley
 
  •  current production of 2,639 boepd (primarily light Nisku oil)
 
  •  stacked multi-zone area: Leduc, Nisku, Mannville, Viking, Belly River and Edmonton
 
  •  opportunities to exploit Nisku and Leduc as well as Edmonton and Mannville CBM
 
  •  67% average working interest
 
Harmattan
 
  •  current production of 4,668 boepd, 62% natural gas (primarily from the Elkton)
 
  •  includes non-operated interest in two units (Harmattan Elkton Unit No. 1 and East Unit No. 2)
 
  •  low risk drilling opportunity
 
  •  41% average working interest
 
West Central Alberta
 
  •  current production of 1,599 boepd of mostly 41 degree API oil
 
  •  operator of two high working interest Swan Hill oil units (Deer Mountain and Goose River)
 
  •  Montney gas production at Ante Creek
 
  •  infill step out drilling stimulation and evaluation opportunity
 
  •  70% average working interest
 
Red Earth
 
  •  current production of 3,141 boepd comprised of 2,930 bpd of oil and NGLs, 1.26 mmcfpd of gas
 
  •  oil production is primarily from the Keg River (light sweet crude)
 
  •  Blue Sky natural gas production at Talbot Lake
 
  •  drilling and optimization opportunities
 
  •  68% average working interest
 
Freefight
 
  •  current production of 14.2 mmcfpd of gas
 
  •  Milk River and Second White Specks development opportunities
 
  •  high working interest operated production (98% average working interest)
 
  •  opportunities for down spacing and step out drilling


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Pengrowth anticipates additional exploration and development opportunities on the diverse portfolio of oil and gas properties comprising the CP Assets, including infill development locations, additional coal bed methane opportunities, and the development of approximately 300,000 net acres of undeveloped lands.
 
Description of Share Purchase Agreement
 
Conditions  Under the Share Purchase Agreement, it is a mutual condition precedent that all required governmental approvals (including approvals pursuant to the Competition Act (Canada) and the Investment Canada Act (Canada)) be obtained except where such approval shall have been waived in writing by the applicable government authority or otherwise lapsed. The conditions precedent to the obligation of Pengrowth Subsidiary to purchase the shares of the CP Subsidiaries are that (i) Burlington shall have performed or complied with all of its covenants in all material respects, and its representations and warranties of Burlington shall be true and correct in all material respects and (ii) no suit, action or other proceeding shall at closing be pending against Burlington or Pengrowth Subsidiary before any court or governmental authority seeking to restrain, prohibit, obtain damages or other relief in connection with consummation of the purchase and sale of the CP Subsidiaries which would materially and adversely affect the value of the shares of the CP Subsidiaries, taken as a whole.
 
The Share Purchase Agreement also contains conditions precedent for the benefit of Burlington which provide that: (i) in all material respects, Pengrowth Subsidiary shall have performed or complied with all of its covenants; (ii) the representations and warranties of Pengrowth Subsidiary shall be true and correct in all material respects; (iii) Pengrowth Subsidiary shall have tendered or cause to be tendered to Burlington the purchase price for the shares of the CP Subsidiaries less the deposit; and (iv) no suit, action or other proceedings shall at closing be pending against Burlington or Pengrowth Subsidiary before any court or governmental authority seeking to restrain, prohibit, obtain damages or other relief in connection with the consummation of the purchase and sale of the shares of the CP Subsidiaries which would have a material adverse effect on the value of the shares of the CP Subsidiaries.
 
Representations  The Share Purchase Agreement contains customary representations by Burlington regarding Burlington, the CP Subsidiaries and the CP Assets. The representations and warranties of Burlington under the Share Purchase Agreement shall survive the closing of the purchase of the shares of the CP Subsidiaries by Pengrowth Subsidiary for a period of 12 months from the Closing Date, subject to provincial limitations legislation.
 
Indemnification  The Share Purchase Agreement also contains customary indemnities by Burlington and Pengrowth Subsidiary in favour of the other party. Under the Share Purchase Agreement, Burlington is required to indemnify Pengrowth’s Subsidiary from all losses resulting from breaches of the representations or warranties made by Burlington or breaches of covenants or agreements made by Burlington in the Share Purchase Agreement and for all losses incurred as a direct result of third party claims relating to the CP Assets that arise from or are related to acts, omissions, events or circumstances occurring before November 1, 2006 except for claims or losses that are for the account of Pengrowth Subsidiary pursuant to the agreement.
 
The Share Purchase Agreement also requires Pengrowth Subsidiary to indemnify Burlington from and against any and all losses resulting from: (i) breaches of the representations or warranties made by Pengrowth Subsidiary or breaches of covenants or agreements made by Pengrowth Subsidiary in the Share Purchase Agreements; (ii) all claims, losses and liabilities relating to the CP Assets arising from or related to acts, omissions, events or circumstances occurring after November 1, 2006 (other than claims for the payment of cost that are included in the working capital adjustment contemplated by the Share Purchase Agreement); and (iii) all environmental liabilities whether occurring before, on or after November 1, 2006 that arise from or relate to acts, omissions, events or circumstances, occurring before, on or after November 1, 2006.
 
Under the Share Purchase Agreement, written notice of a claim to an indemnity must be provided within 12 months of the closing date subject to provincial limitations legislation. Also under the Share Purchase Agreement, Burlington’s total liability for breaches of representations, warranties, covenants and indemnities shall not exceed the base purchase price of $1.0375 billion, and Burlington shall only be liable for breaches of representations, warranties, covenants and indemnities if the aggregate of the losses of Pengrowth Subsidiary in respect of all such breaches exceeds $50 million and in that event Burlington shall be liable for the full amount of all of the losses of Pengrowth Subsidiary in respect of all such breaches. Pengrowth Subsidiary shall only be liable for breaches of the representations and warranties in the Share Purchase Agreement if the aggregate of the losses incurred by Burlington in respect of all such breaches exceeds $5 million and in that event Pengrowth Subsidiary shall be liable for the full amount of all of the losses of Burlington in respect of all such breaches.


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Financial Statements
 
The schedules of revenue, royalties and operating expenses and notes thereto relating to the CP Assets for the years ended December 31, 2005 and 2004, together with the report of the auditors thereon, and the unaudited schedule of revenue, royalties and operating expenditures for the nine months ended September 30, 2006 are attached as Schedule “A” to this Prospectus Supplement.
 
The unaudited pro forma consolidated financial statements of Pengrowth after giving effect to the ConocoPhillips Acquisition, the strategic business combination with Esprit and this offering, including a pro forma balance sheet as at September 30, 2006, a pro forma consolidated statement of income for the nine months ended September 30, 2006 and a pro forma consolidated statement of income for the year ended December 31, 2005 (including a reconciliation of such statements to United States generally accepted accounting principles), are attached as Schedule “B” to this Prospectus Supplement.
 
Pro Forma Description of Pengrowth Following the ConocoPhillips Acquisition
 
Negotiations were undertaken by us with ConocoPhillips with a view to acquiring a combination of high quality oil and natural gas properties that would enhance Pengrowth’s interests in our core properties and would provide potential for both oil and natural gas exploration and development along with significant additions to our undeveloped acreage position.
 
We have developed core competencies in the pursuit of enhanced oil recovery projects, shallow gas drilling, coal bed methane projects and the pursuit of value additions through field and facility optimization. We expect that the transaction will add significant value to Unitholders and will provide a broad portfolio of new opportunities.
 
Upon completion of the ConocoPhillips Acquisition, the following financial and operational benefits are anticipated to accrue to Unitholders:
 
  •  our overall current production would increase on a pro forma basis by 27% to approximately 100,000 boepd and our overall Total Proved Plus Probable Reserves would increase on a pro forma basis to approximately 359 mmboe (on a company interest before royalty basis using constant pricing) and before the divestiture of properties pursuant to the asset rationalization program;
 
  •  company production weighted 50% to natural gas and 50% to crude oil and liquids and a reserve life index of approximately 9.8 years on a proved plus probable basis (all using constant prices and costs);
 
  •  a large and diversified quality asset base with many interests held in Canada’s larger oil and natural gas pools;
 
  •  growth and development opportunities on approximately 375,000 net acres of undeveloped land; and
 
  •  creation of a stronger platform to capitalize on future growth opportunities through significant acquisitions in North America and other areas in the world.
 
Reserves Information
 
The following table sets forth certain reserves and operational information with respect to Pengrowth (updated from the December 31, 2005 information contained in our annual information form dated March 29, 2006 for the year ended December 31, 2005), the properties to be acquired pursuant to the ConocoPhillips Acquisition and Pengrowth on a pro forma combined basis, as at and for the periods indicated in the notes thereto, after giving effect to the ConocoPhillips Acquisition, based on constant price assumptions. The following information does not reflect the impact of the divestiture


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of properties pursuant to Pengrowth’s asset rationalization program. See “Recent Developments — Asset Rationalization Program”.
 
                         
    Pengrowth
    ConocoPhillips
    Pengrowth
 
    Updated(1)     Acquisition(2)     Pro Forma(3)  
 
Proved Reserves
                       
Crude oil and NGLs (mbbls)
    118,765       23,683       142,448  
Natural gas (bcf)
    623       164       788  
Total (mboe)(4)
    222,623       51,086       273,709  
Total Proved Plus Probable Reserves
                       
Crude oil and NGLs (mbbls)
    156,234       31,162       187,396  
Natural gas (bcf)
    824       206       1,029  
Total (mboe)(4)
    293,497       65,449       358,946  
Net Present Value of Future Net Revenue @ 10%
                       
Proved Reserves ($MM)
    3,344       682       4,026  
Total Proved Plus Probable Reserves ($MM)
    4,142       820       4,962  
Net Present Value of Future Net Revenue @ 5%
                       
Proved Reserves ($MM)
    4,173       822       4,995  
Total Proved Plus Probable Reserves ($MM)
    5,330       1,018       6,348  
Undeveloped Land Holdings
                       
(net acres)
    683,000 (5)     377,150       1,060,150  
Oil and Natural Gas Wells (net wells)
                       
Producing oil wells
    812       396       1,208  
Producing natural gas wells
    1,587       1,745       3,332  
Average Daily Production
                       
(three months ended September 30, 2006)
                       
Crude oil and NGLs (bblpd)
    39,981       10,940       50,921  
Natural gas (mmcfpd)
    244       71       315  
Total (boepd)(4)
    80,706       22,773       103,480  
 
Notes:
 
(1)  The updated reserve volumes and net present values of future net revenue for Pengrowth are: (i) effective December 31, 2005, with a Mechanical Update up to November 1, 2006; (ii) inclusive of the acquisition of properties in Alberta from Tundra Oil and Gas Limited in March of 2006, the acquisition of properties in Alberta from ExxonMobil Canada on September 28, 2006 and the acquisition of properties pursuant to the strategic business combination with Esprit (other than the reserve volumes and net present values of future net revenue associated with Trifecta Resources Inc.) on October 2, 2006, all of the foregoing effective no earlier than January 1, 2006 with a Mechanical Update up to November 1, 2006; (iii) presented on a company interest basis (working interests and royalty interests) before the deduction of royalties; and (iv) based upon GLJ Petroleum Consultants Ltd.’s constant prices and costs as at October 31, 2006 using a 5% and 10% discount rate, all as contained in the report prepared by GLJ Petroleum Consultants Ltd. dated November 27, 2006. The reserve volumes and net present values of future net revenue for Trifecta Resources Inc. are: (i) based upon Sproule Associates Limited engineering reports effective March 31, 2006 and May 31, 2006, with a Mechanical Update up to November 1, 2006; (ii) presented on a company interest basis (working interests and royalty interests) before the deduction of royalties; and (iii) based upon GLJ Petroleum Consultants Ltd.’s constant prices and costs as at October 31, 2006 using a 5% and 10% discount rate, all as contained in the report prepared by Sproule Associates Limited dated November 28, 2006. More comprehensive reserves information is provided in Schedule “C” attached hereto.
 
Mechanical Update means an update of reserves information making no adjustment to forecast production and costs used from a NI 51-101 compliant report other than changing the effective date such that any forecast production and costs between the NI 51-101 compliant report effective date and the new effective date are excluded. Items that may have changed and, which are not reflected in the Mechanical Update, are items such as reserve additions, changes in operating costs and, to the extent there may be any, performance changes.
 
(2)  The reserve volumes and net present values of future net revenue for the ConocoPhillips properties are: (i) effective July 1, 2006 with a Mechanical Update up to November 1, 2006; (ii) presented on a company interest basis (working interests and royalty interests) before the deduction of royalties; and (iii) based upon GLJ Petroleum Consultants Ltd.’s constant prices and costs as at October 31, 2006 using a 5% and 10% discount rate, all as contained in the report prepared by GLJ Petroleum Consultants Ltd. dated November 27, 2006. More comprehensive reserves information is provided in Schedule “D” attached hereto.
 
(3)  The Pengrowth Pro Forma reserve volumes and net present values of future net revenue for Pengrowth are the mechanical total of the Pengrowth Updated and ConocoPhillips Acquisition reports referred to above. More comprehensive reserves information is provided in Schedule “E” attached hereto.
 
(4)  The abbreviations “boe”, “mboe” and “mmboe” refers to barrels of oil equivalent, thousands of barrels of oil equivalent and millions of barrels of oil equivalent, respectively, on the basis of one boe being equal to one barrel of oil or natural gas liquids or six mcf of natural gas; barrels of oil


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equivalent may be misleading, particularly if used in isolation; a conversion ratio of six mcf of natural gas to one boe is based on an energy equivalency conversion method primarily applicable at the burner tip and does not represent a value equivalency at the wellhead; “boepd” refers to barrels of oil equivalent per day.
 
(5)  Subject to a farm-out with Apache Canada Limited. The total farm-out affects approximately 21,090 developed and undeveloped acres of which less than 40% are undeveloped.
 
The following table sets forth certain reserves and operational information with respect to Pengrowth (updated from the December 31, 2005 information contained in our annual information form dated March 29, 2006 for the year ended December 31, 2005), the properties to be acquired pursuant to the ConocoPhillips Acquisition and Pengrowth on a pro forma combined basis, as at and for the periods indicated in the notes hereto, after giving effect to the ConocoPhillips Acquisition, based on strip forecast price assumptions. The Strip Price forecast has been estimated by GLJ using as a basis the NYMEX futures strip for light sweet crude oil and natural gas for the indicated date. The light sweet crude oil contracts require delivery at Cushing, Oklahoma and the natural gas contracts require delivery to Henry Hub in Louisiana. GLJ uses historically derived differentials to estimate the price at the various points, for the different product types and for the different crude qualities. These prices are applied to the various products to calculate the revenue. The following information does not reflect the impact of the divestiture of properties pursuant to Pengrowth’s asset rationalization program. See “Recent Developments — Asset Rationalization Program”.
 
                         
    Pengrowth
    ConocoPhillips
    Pengrowth
 
    Updated(1)     Acquisition(2)     Pro Forma(3)  
 
Proved Reserves
                       
Crude oil and NGLs (mbbls)
    119,624       24,527       144,151  
Natural gas (bcf)
    623       162       784  
Total (mboe)(4)
    223,386       51,449       274,835  
Total Proved Plus Probable Reserves
                       
Crude oil and NGLs (mbbls)
    157,064       32,132       189,196  
Natural gas (bcf)
    823       202       1,025  
Total (mboe)(4)
    294,197       65,770       359,967  
Net Present Value of Future Net Revenue @ 10%
                       
Proved Reserves ($MM)
    3,905       826       4,731  
Total Proved Plus Probable Reserves ($MM)
    4,848       995       5,843  
Net Present Value of Future Net Revenue @ 5%
                       
Proved Reserves ($MM)
    4,894       989       5,882  
Total Proved Plus Probable Reserves ($MM)
    6,296       1,231       7,527  
Undeveloped Land Holdings
                       
(net acres)
    683,000 (5)     377,150       1,060,150  
Oil and Natural Gas Wells (net wells)
                       
Producing oil wells
    812       396       1,208  
Producing natural gas wells
    1,587       1,745       3,332  
Average Daily Production
                       
(three months ended September 30, 2006)
                       
Crude oil and NGLs (bblpd)
    39,981       10,940       50,921  
Natural gas (mmcfpd)
    244       71       315  
Total (boepd)(4)
    80,706       22,773       103,480  
 
Notes:
 
(1)  The updated reserve volumes and net present values of future net revenue for Pengrowth are: (i) effective December 31, 2005, with a Mechanical Update up to November 1, 2006; (ii) inclusive of the acquisition of properties in Alberta from Tundra Oil and Gas Limited in March of 2006, the acquisition of properties in Alberta from ExxonMobil Canada on September 28, 2006 and the acquisition of properties pursuant to the strategic business combination with Esprit (other than the reserve volumes and net present values of future net revenue associated with Trifecta Resources Inc.) on October 2, 2006, all of the foregoing effective no earlier than January 1, 2006 with a Mechanical Update up to November 1, 2006; (iii) presented on a company interest basis (working interests and royalty interests) before the deduction of royalties; and (iv) based upon GLJ Petroleum Consultants Ltd.’s forward strip prices and costs as at October 31, 2006 using a 5% and 10% discount rate, all as contained in the report prepared by GLJ Petroleum Consultants Ltd. dated November 27, 2006. The reserve volumes and net present values of future net revenue for Trifecta Resources Inc. are: (i) based upon Sproule Associates Limited engineering reports effective March 21, 2006 and May 31, 2006, with a Mechanical Update up to November 1, 2006; (ii) presented on a company interest basis (working interests and royalty interests) before the deduction of royalties; and (iii) based upon GLJ Petroleum Consultants Ltd.’s forward strip prices and costs as at October 31, 2006 using a 5% and


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10% discount rate, all as contained in the report prepared by Sproule Associates Limited dated November 28, 2006. More comprehensive reserves information is provided in Schedule “F” attached hereto.
 
Mechanical Update means an update of reserves information making no adjustment to forecast production and costs used from a NI 51-101 compliant report other than changing the effective date such that any forecast production and costs between the NI 51-101 compliant report effective date and the new effective date are excluded. Items that may have changed and, which are not reflected in the Mechanical Update, are items such as reserve additions, changes in operating costs and, to the extent there may be any, performance changes.
 
(2)  The reserve volumes and net present values of future net revenue for the ConocoPhillips properties are: (i) effective July 1, 2006 with a Mechanical Update up to November 1, 2006; (ii) presented on a company interest basis (working interests and royalty interests) before the deduction of royalties; and (iii) based upon GLJ Petroleum Consultants Ltd.’s forward strip prices and costs as at October 31, 2006 using a 5% and 10% discount rate, all as contained in the report prepared by GLJ Petroleum Consultants Ltd. dated November 27, 2006. More comprehensive reserves information is provided in Schedule “G” attached hereto.
 
(3)  The Pengrowth Pro Forma reserve volumes and net present values of future net revenue for Pengrowth are the mechanical total of the above referred to Pengrowth Updated and ConocoPhillips Acquisition reports. More comprehensive reserves information is provided in Schedule “H” attached hereto.
 
(4)  The abbreviations “boe”, “mboe” and “mmboe” refers to barrels of oil equivalent, thousands of barrels of oil equivalent and millions of barrels of oil equivalent, respectively, on the basis of one boe being equal to one barrel of oil or natural gas liquids or six mcf of natural gas; barrels of oil equivalent may be misleading, particularly if used in isolation; a conversion ratio of six mcf of natural gas to one boe is based on an energy equivalency conversion method primarily applicable at the burner tip and does not represent a value equivalency at the wellhead; “boepd” refers to barrels of oil equivalent per day.
 
(5)  Subject to a farm-out with Apache Canada Limited. The total farm-out affects approximately 21,090 developed and undeveloped acres of which less than 40% are undeveloped.
 
More comprehensive reserves information prepared using constant pricing and relating to: (i) Pengrowth prior to the ConocoPhillips Acquisition; (ii) the ConocoPhillips Acquisition; and (iii) Pengrowth on a pro forma basis after giving effect to the ConocoPhillips Acquisition, are attached as Schedules “C”, “D” and “E” hereto, respectively. More comprehensive reserves information prepared using strip pricing and relating to: (i) Pengrowth prior to the ConocoPhillips Acquisition; (ii) the ConocoPhillips Acquisition; and (iii) Pengrowth on a pro forma basis after giving effect to the ConocoPhillips Acquisition, are attached as Schedules “F”, “G” and “H” hereto, respectively. The information in Schedules “C” through “H” does not reflect the impact of the divestiture of properties pursuant to Pengrowth’s asset rationalization program. See “Recent Developments — Asset Rationalization Program”).
 
Pricing assumptions relied upon in preparing the foregoing tables and the information contained in Schedules “C” through “H” are provided in Schedule “I” hereto.
 
Selected Production Information
 
                         
    2004(1)     2005(1)     2006(2)  
 
Oil (mbbls)
    4,102       3,653       3,392  
NGLs (mbbls)
    616       527       534  
Natural Gas (mmcf)
    27,291       27,206       25,711  
 
 
Notes
 
(1)  Actual production.
 
(2)  Actual production from January to June and forecast production from July to December.
 
We may not be able to achieve the anticipated benefits of the ConocoPhillips Acquisition, and the integration process may result in the loss of key employees and the disruption of ongoing business customer and employee relationships. See “Risk Factors” in this Prospectus Supplement.
 
Asset Rationalization Program
 
Pengrowth intends to pursue a comprehensive asset rationalization program with respect to its entire portfolio of oil and natural gas properties. Pengrowth intends to dispose of assets producing approximately 7,700 boepd from its existing portfolio of properties, and to dispose of assets producing approximately 4,300 boepd from the CP Assets. The assets marked for disposition are located in non-core areas. The proceeds of these dispositions, if any, will be used to reduce Pengrowth’s indebtedness on the bridge line of credit. To the extent such proceeds are received before the intended closing date of January 18, 2007, such proceeds will be invested or used for general corporate or trust purposes. There can be no assurance that Pengrowth will be successful in completing the disposition of any assets or the extent of the proceeds, if any, to be raised by Pengrowth.


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Bridge Credit Facility
 
On November 28, 2006 Pengrowth entered into a commitment letter agreement with a Canadian chartered bank whereby the bank agreed to provide Pengrowth with a Bridge Credit Facility in the amount of $1.0375 billion for the purpose of funding the ConocoPhillips Acquisition. The facility is available by way of a one time advance no later than January 19, 2007. Amounts drawn are non-revolving. Amounts drawn on the facility bear interest at the same rate as under Pengrowth’s $950 million syndicated facility, which bears interest at approximately 5.5%. The total outstanding amount under the Bridge Credit Facility matures and becomes due and payable 12 months from the closing of the ConocoPhillips Acquisition. To the extent not required to be applied against Pengrowth’s syndicated facility, the proceeds of all issuances of trust units or other equity (including convertible debentures), the proceeds of all issuances of public or private debt, reductions in the purchase price of the CP Assets and the net proceeds of any asset dispositions following the closing of the ConocoPhillips Acquisition will reduce the Bridge Credit Facility. The commitment letter agreement contemplates that the Bridge Credit Facility will be documented by a credit agreement substantially similar to Pengrowth’s existing $950 million syndicated credit facility. The agreement will contain customary representations, warranties, and covenants, including financial covenants consistent with Pengrowth’s syndicated facility.
 
USE OF PROCEEDS
 
Our estimated net proceeds from the sale of the 20,000,000 Trust Units offered by this Prospectus Supplement, after deducting the Underwriters’ fee of $    l     and expenses of this offering estimated to be $    l     will be approximately $    l    . If the Over-Allotment Option is exercised in full, the Underwriters’ fee will be $    l     and the net proceeds to us after expenses will be approximately $    l    . We will use the net proceeds to finance a portion of the purchase price of the ConocoPhillips Acquisition. In the interim, such net proceeds will be invested, used for general corporate or trust purposes or used to reduce outstanding indebtedness. See “Recent Developments”. We believe that the ConocoPhillips Acquisition will be completed as described in this Prospectus Supplement. However, if contrary to Pengrowth’s expectation the ConocoPhillips Acquisition is not completed for any reason, such net proceeds would be used to repay indebtedness, to fund capital expenditures and for general corporate or trust purposes. See “Consolidated Capitalization” and “Relationship between the Trust and the Underwriters” and “Risk Factors — If the ConocoPhillips Acquisition is not consummated, the Trust may not be able to identify alternate uses of proceeds of this offering that will enable it to sustain distributions at anticipated levels.”


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CONSOLIDATED CAPITALIZATION
 
The following table summarizes our consolidated capitalization as at September 30, 2006: (i) on an actual basis; (ii) as adjusted to give effect to the business combination with Esprit (which closed on October 2, 2006); and (iii) as further adjusted to give effect to the ConocoPhillips Acquisition, and the offering of Trust Units pursuant to this Prospectus Supplement (assuming no exercise of the Over-Allotment Option) and the application of the net proceeds of this offering as described under “Use of Proceeds”. You should read this table together with our unaudited comparative consolidated financial statements for period ended September 30, 2006, which are incorporated by reference in the Prospectus. See Schedule “B” to this Prospectus Supplement.
 
                         
                Outstanding as at
 
                September 30, 2006
 
          Outstanding as at
    after giving effect to the
 
          September 30, 2006
    business combination
 
          after giving effect to the
    with Esprit, the
 
    Outstanding as at
    business combination
    ConocoPhillips Acquisition
 
    September 30, 2006     with Esprit     and this offering  
    (unaudited)     (unaudited)     (unaudited)(1)(10)  
    (Tabular amounts in 000s except numbers of Trust Units)  
 
Revolving Credit Facility(2)(3)
  $ 132,000     $ 419,470     $ 419,470  
Bridge Credit Facility(4)
  $     $     $ 649,380 (10)
Convertible Debentures(5)
  $     $ 96,295     $ 96,295  
Long-term Debt
  $ 327,910     $ 327,910     $ 327,910  
trust units(5)(6)(7)(8)(9)
  $ 3,040,038     $ 3,935,982     $ 4,324,102 (10)
      (184,459,239 trust units )     (219,184,396 trust units )     (239,184,396 trust units )
 
 
Notes:
 
  (1)  This table does not reflect the application of proceeds, if any, from Pengrowth’s planned asset rationalization program. See “Recent Developments — Asset Rationalization Program”.
 
  (2)  Our operating bank loans consist of: (i) a syndicated $950 million extendible revolving term credit facility; and (ii) a $35 million demand operating line of credit for working capital purposes. Proceeds from this offering may be used to retire a portion of this indebtedness. For details, see “Use of Proceeds” and “Relationship between the Trust and the Underwriters” herein and “Material Debt” in the Prospectus.
 
  (3)  Upon the closing of the business combination with Esprit on October 2, 2006, we utilized our credit facilities to repay all amounts owing under Esprit’s credit facility, being in the aggregate $315 million.
 
  (4)  The purchase price of the ConocoPhillips Acquisition of Cdn $1.0375 billion will be partially financed from the net proceeds of this offering, with the remainder of the purchase price to be financed though a proposed bridge line of credit to be provided by a Canadian chartered bank. Amounts drawn on the bridge line of credit bear interest at approximately 5.5%. The bridge line of credit is not secured on any assets of Pengrowth, but Pengrowth is required to use proceeds of any financing or asset dispositions, including the asset realization program described under “Recent Developments — Asset Rationalization Program”, to repay such facility. See “Recent Developments — Bridge Credit Facility”.
 
  (5)  Upon the closing of the business combination with Esprit, we assumed the obligations outstanding pursuant to Esprit’s $96 million aggregate principal amount of 6.5% convertible unsecured subordinated debentures due 2010. On November 1, 2006, we made an offer, in accordance with the terms of the indenture relating to such debentures, to all of the holders thereof to purchase all outstanding debentures at a purchase price in cash equal to 101% of the principal amount thereof. In the event that none of the debentures are tendered pursuant to the offer, these debentures will be convertible, at the option of the holders thereof, into approximately 3,750,000 Trust Units.
 
  (6)  Our estimated net proceeds from the sale of the 20 million Trust Units offered by this Prospectus Supplement, after deducting the Underwriters’ fee of $20.48 million and expenses of this offering estimated to be $1 million, will be approximately $388 million (assuming that the Over-Allotment Option is not exercised).
 
  (7)  On July 27, 2006, we consolidated our issued and outstanding Class A trust units and Class B trust units into a single class of trust units, referred to herein as “Trust Units”. Pursuant to this consolidation, all issued and outstanding Class B trust units were renamed as “Trust Units”, all issued and outstanding unclassified trust units were converted to Trust Units and all issued and outstanding Class A trust units were converted to Trust Units, except for Class A trust units for which a declaration of Canadian residency was provided. As at October 31, 2006, we had 219,290,325 Trust Units issued and outstanding and 12,968 Class A trust units issued and outstanding.
 
  (8)  Does not include 3 million Trust Units which may be issued pursuant to the Over-Allotment Option. See “Plan of Distribution”. In the event of the exercise in full of the Over-Allotment Option, the number of issued and outstanding Trust Units will increase to 242 million Trust Units.
 
  (9)  Includes 34,725,157 Trust Units issued to holders of Esprit trust units pursuant to our business combination with Esprit.
 
(10)  Assumes 20,000,000 Trust Units are issued at a price of $20.48 (being the closing price on the TSX on the last trading date prior to the date of this Preliminary Prospectus Supplement).


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PLAN OF DISTRIBUTION
 
Subject to the terms and conditions of an agreement dated November     l    , 2006 (the “Underwriting Agreement”) among us and each of the Underwriters, we have agreed to sell and the Underwriters have severally agreed to purchase on the Closing Date,    l     Trust Units offered under this Prospectus Supplement at a price of $    l     per Trust Unit payable to us against delivery of certificates representing the Trust Units. We have also granted an Over-Allotment Option to the Underwriters, exercisable in whole or in part for a period of 30 days from the Closing Date, to purchase on a pro rata basis up to an additional 15% of the Trust Units issued at the Closing Date on the same terms. The Underwriters will be responsible for the payment of the January 15, 2007 distribution on any Trust Units issued pursuant to the Over-Allotment Option in the event the Over-Allotment Option is exercised after the record date therefor and all responsibility for the payment of such distributions will be for the account of the Underwriters. The obligations of the Underwriters, under the Underwriting Agreement, are several and not joint and several and may be terminated on the occurrence of certain stated events. Under the Underwriting Agreement, we shall not be obliged to sell to the Underwriters, nor shall the Underwriters be obliged to purchase, less than all of the Trust Units that the Underwriters have agreed to purchase. The Underwriters are, however, obligated to take up and pay for all such Trust Units if any of the Trust Units are purchased under the Underwriting Agreement.
 
We have agreed to indemnify the Underwriters and their agents, directors, officers, shareholders and employees against certain liabilities, including liabilities under the U.S. securities laws and Canadian securities laws or to contribute to payments the Underwriters may be required to make because of any of these liabilities.
 
The offering price of the Trust Units was determined by negotiation between us and the Underwriters. We have agreed to pay a fee to the Underwriters in the amount of $    l     per Trust Unit purchased under this offering. Assuming no exercise of the Over-Allotment Option, the Underwriters’ fee will be $    l     and the net proceeds to us will be $    l     (before deducting the expenses of this offering estimated to be approximately $    l    ). In the event the Over-Allotment Option is exercised in full, the Underwriters’ fee will be $    l     and the net proceeds to us will be $    l     (before deducting the expenses of this offering estimated to be approximately $    l    ).
 
The public offering price for the Trust Units offered in Canada and in the United States is payable in Canadian dollars only.
 
Pursuant to rules and policy statements of certain Canadian provincial securities commissions, the Underwriters may not, throughout the period of distribution, bid for or purchase Trust Units for their own account or for accounts over which they exercise control or direction. The foregoing restriction is subject to exceptions, on the condition that the bid or purchase is not engaged in for the purpose of creating actual or apparent active trading in, or raising the price of, the Trust Units. These exceptions include bids or purchases permitted under the Universal Market Integrity Rules for Canadian Marketplaces administered by Market Regulation Services Inc. relating to market stabilization and passive market making activities and a bid or purchase made for and on behalf of a customer where the order was not solicited during the period of distribution. Subject to the foregoing, the Underwriters may over-allot or effect transactions that stabilize or maintain the market price of the Trust Units at levels other than those that might otherwise prevail on the open market. Such transactions, if commenced, may be discontinued at any time.
 
The rules of the SEC may limit the ability of the Underwriters to bid for or purchase Trust Units before the distribution of the Trust Units if the offering is completed. However, the Underwriters may engage in the following activities in accordance with these rules:
 
  •  Stabilizing transactions permit bids to purchase the Trust Units so long as the stabilizing bids do not exceed a specified maximum.
 
  •  Over-allotment transactions involve sales by the Underwriters of Trust Units in excess of the number of Trust Units the Underwriters are obligated to purchase, which creates a syndicate short position. The Underwriters may close out any short position by purchasing Trust Units in the open market.
 
  •  Penalty bids permit the representatives to reclaim a selling concession from a syndicate member when the Trust Units originally sold by the syndicate member are purchased in a stabilizing or syndicate covering transaction to cover syndicate short positions.
 
These stabilizing transactions, syndicate covering transactions and penalty bids may have the effect of preventing or mitigating a decline in the market price of the Trust Units, and may cause the price of the Trust Units to be higher than would otherwise exist in the open market absent such stabilizing activities. As a result, the price of the Trust Units may be


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higher than the price that might otherwise exist in the open market. These transactions may be effected on the NYSE, the TSX or otherwise and, if commenced, may be discontinued at any time.
 
We have agreed that, subject to certain exceptions, we shall not issue or agree to issue any equity securities or other securities convertible into, or exchangeable for, equity securities prior to 90 days after the Closing Date without the prior consent of RBC Dominion Securities Inc., on behalf of the Underwriters, which consent shall not be unreasonably withheld.
 
The TSX has conditionally approved the listing of the Trust Units offered by this Prospectus Supplement. Listing will be subject to our fulfillment of all the listing requirements of the TSX on or before February 26, 2007.
 
This offering is being made concurrently in all of the provinces of Canada and in the United States pursuant to the multijurisdictional disclosure system implemented by securities regulatory authorities in Canada and the United States. The Trust Units will be offered in the United States or Canada through the Underwriters either directly or, if applicable, through their respective U.S. or Canadian registered broker-dealer affiliates.
 
Certain Underwriters and their affiliates have performed, and may in the future perform, various underwriting, financial advisory, investment banking, commercial lending and other services in the ordinary course of business with us and our affiliates for which they receive or will receive customary compensation. See “Relationship between the Trust and the Underwriters”.
 
RELATIONSHIP BETWEEN THE TRUST AND THE UNDERWRITERS
 
Each of RBC Dominion Securities Inc., BMO Nesbitt Burns Inc., CIBC World Markets Inc., Scotia Capital Inc., National Bank Financial Inc., TD Securities Inc. and HSBC Securities (Canada) Inc. is a subsidiary of a Canadian chartered bank (the “Banks”) which is one of our lenders and to which we are currently indebted. In addition, in connection with the financing of the ConocoPhillips Acquisition, each of the banks is expected to be a lender under the Bridge Credit Facility. See “Recent Developments — Bridge Credit Facility.” Consequently, we may be considered to be a connected issuer of such Underwriters for the purposes of securities regulations in certain provinces. The decision to offer the Trust Units and the determination of the terms of the offering were made through negotiations between us and RBC Dominion Securities Inc., on behalf of the Underwriters. The Banks did not have any involvement in such decisions or determination; however, the Banks have been advised of the offering and the terms thereof. The net proceeds from this offering may be used to reduce our indebtedness to the Banks. See “Use of Proceeds” and “Consolidated Capitalization”.
 
ELIGIBILITY FOR INVESTMENT
 
In the opinion of our counsel, Bennett Jones LLP, and in the opinion of Fraser Milner Casgrain LLP, counsel to the Underwriters, on the basis of the applicable legislation as in effect on the date hereof and subject to the qualifications and assumptions discussed under the heading “Certain Canadian Income Tax Considerations” in the accompanying Prospectus, the Trust Units offered hereby, on the Closing Date, will be qualified investments under the Tax Act for trusts governed by registered retirement savings plans, registered retirement income funds, deferred profit sharing plans and registered education savings plans. If the Trust ceases to qualify as a mutual fund trust, the Trust Units will cease to be qualified investments for the plans referred to above. Adverse tax consequences may apply to such a plan, or an annuitant thereunder, if such a plan acquires or holds property that is not a qualified investment. Although the October 31 Proposals will not modify the eligibility for investment of the Trust Units for the above-noted plans, it is expected that the October 31 Proposals will reduce the amount of distributions on the Trust Units received by such plans commencing in 2011.
 
LEGAL MATTERS
 
Certain legal matters relating to Canadian law will be passed upon on our behalf by Bennett Jones LLP and on behalf of the Underwriters by Fraser Milner Casgrain LLP. Certain legal matters relating to United States law will be passed upon on our behalf by Paul, Weiss, Rifkind, Wharton and Garrison LLP and on behalf of the Underwriters by Vinson & Elkins L.L.P.


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INTEREST OF EXPERTS
 
As of the date hereof, the partners and associates of Bennett Jones LLP and Fraser Milner Casgrain LLP, each as a group, own beneficially, directly or indirectly, less than 1% of the outstanding Trust Units and Class A trust units, in the aggregate.
 
The schedule of revenue, royalties and operating expenses for the CP Assets for the years ended December 31, 2005 and 2004, which is attached as Schedule “A” to this Prospectus Supplement, has been audited by Ernst & Young LLP, independent auditors of ConocoPhillips Canada, as indicated in their report dated November 2, 2006 and are incorporated herein in reliance upon the authority of said firm as experts in accounting and auditing in giving said report.
 
Information relating to the reserves relating to the CP Assets and our reserves (other than the reserves information relating to Trifecta Resources Inc.) included herein under “Recent Developments — ConocoPhillips Acquisition” and in the schedules to this Prospectus Supplement was calculated based on an evaluation of, and reports on, the crude oil and natural gas reserves conducted and prepared by GLJ, independent qualified reserves evaluators. Information relating to the reserves of Trifecta Resources Inc. included in the schedules to this Prospectus Supplement was calculated based on an evaluation of, and reports on, the crude oil and natural gas reserves conducted and prepared by Sproule, independent qualified reserves evaluators. As of the date hereof, the directors and officers of GLJ and Sproule, each as a group, beneficially own, directly or indirectly, less than 1% of our outstanding Trust Units and Class A trust units, in the aggregate.
 
PURCHASERS’ STATUTORY RIGHTS
 
Securities legislation in several of the provinces of Canada provides purchasers with the right to withdraw from an agreement to purchase securities. This right may be exercised within two business days after receipt or deemed receipt of a Prospectus, the accompanying Prospectus Supplement relating to securities purchased by a purchaser and any amendment thereto. In several of the provinces, securities legislation further provides a purchaser with remedies for rescission, or in some jurisdictions, damages if the Prospectus, the accompanying Prospectus Supplement relating to securities purchased by a purchaser or any amendment contains a misrepresentation or are not delivered to the purchaser, provided that the remedies for rescission or damages are exercised by the purchaser within the time limit prescribed by the securities legislation of the purchaser’s province. The purchaser should refer to any applicable provisions of the securities legislation of the purchaser’s province for the particulars of these rights or consult with a legal advisor.


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AUDITOR’S CONSENT
 
Consent of Ernst & Young LLP
 
We have read the preliminary prospectus supplement to the short form base shelf prospectus dated September 15, 2006 of Pengrowth Energy Trust (the “Trust”) dated November 29, 2006 (the “Prospectus”) related to the sale and issuance of Trust Units of the Trust. We have complied with generally accepted standards for an auditors’ involvement with offering documents.
 
We consent to the inclusion in the above mentioned Prospectus of our report to the board of directors of ConocoPhillips Canada (“ConocoPhillips”) on the schedules of revenue, royalties and operating expenses for the properties currently being offered for sale by ConocoPhillips for the years ended December 31, 2005 and 2004. Our report is dated November 2, 2006.
 
(signed) “Ernst & Young LLP
Chartered Accountants
Calgary, Canada
November 29, 2006


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CERTIFICATES OF PENGROWTH
 
Dated: November 29, 2006
 
The short form prospectus, together with the documents incorporated in the prospectus by reference, as supplemented by the foregoing, constitutes full, true and plain disclosure of all material facts relating to the securities offered by the prospectus and this supplement as required by the securities legislation of each of the provinces of Canada. For the purposes of the Province of Québec, this simplified prospectus, together with documents incorporated herein by reference and as supplemented by the permanent information record, contains no misrepresentation that is likely to affect the value or the market price of the securities to be distributed.
 
Pengrowth Energy Trust
By: Pengrowth Corporation as Administrator
 
     
(signed) “James S. Kinnear
James S. Kinnear
President and Chief Executive Officer
  (signed) “Christopher G. Webster
Christopher G. Webster
Chief Financial Officer
 
On behalf of the Board of Directors
 
     
(signed) “Thomas A. Cumming
Thomas A. Cumming
Director
  (signed) “Wayne K. Foo
Wayne K. Foo
Director
 
By: Pengrowth Management Limited, as Manager
 
     
(signed) “James S. Kinnear
James S. Kinnear
President
  (signed) “Gordon M. Anderson
Gordon M. Anderson
Vice President, Financial Services
in the capacity of Chief Financial Officer
 
On behalf of the Board of Directors
 
(signed) “James S. Kinnear
James S. Kinnear
Director


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CERTIFICATE OF THE UNDERWRITERS
 
Dated: November 29, 2006
 
To the best of our knowledge, information and belief, the short form prospectus, together with the documents incorporated in the prospectus by reference, as supplemented by the foregoing, constitutes full, true and plain disclosure of all material facts relating to the securities offered by the prospectus and this supplement as required by the securities legislation of each of the provinces of Canada. For the purpose of the Province of Québec, this simplified prospectus, together with documents incorporated herein by reference and as supplemented by the permanent information record, contains no misrepresentation that is likely to affect the value or the market price of the securities to be distributed.
 
RBC Dominion Securities Inc.
 
By: (Signed) Gordon M. Ritchie
 
BMO Nesbitt Burns Inc.
 
By: (Signed) Eric L. Toews
 
CIBC World Markets Inc.
 
By: (Signed) Brenda A. Mason
 
Scotia Capital Inc.
 
By: (Signed) Craig M. Langpap
 
     
National Bank Financial Inc.


By: (Signed) Robert B. Wonnacott
 
TD Securities Inc.


By: (Signed) Alec W.G. Clark
 
Merrill Lynch Canada Inc.
 
By: (Signed) Aaron Papps
 
HSBC Securities (Canada) Inc.
 
By: (Signed) Rod A. McIsaac
 
     
Canaccord Capital Corporation


By: (Signed) Karl B. Staddon
 
Raymond James Ltd.


By: (Signed) Edward J. Bereznicki
     
Sprott Securities Inc.


By: (Signed) Brian K. Petersen
 
Dundee Securities Corporation


By: (Signed) Sheldon McDonough
 
         
FirstEnergy Capital Corp.


By: (Signed) Hugh R. Sanderson
 
Peters & Co. Limited


By: (Signed) Bradley P.D. Fedora
 
Tristone Capital Inc.


By: (Signed) Brad Hurtibise


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SCHEDULE “A”
 
Schedules of Revenue, Royalties and Operating Expenses for the CP Assets for the years ended December 31, 2005 and 2004 and the report of the auditors thereon and the nine months ended September 30, 2006, together with the notes thereto
 
AUDITORS’ REPORT
 
To the Board of Directors of
  ConocoPhillips Canada
 
At the request of ConocoPhillips Canada (“ConocoPhillips”), we have audited the Schedules of Revenue, Royalties and Operating Expenses for the properties currently being offered for sale by ConocoPhillips (the “Orion Properties”) for the years ended December 31, 2005 and 2004. This financial information is the responsibility of management. Our responsibility is to express an opinion on this financial information based on our audits.
 
We conducted our audits in accordance with Canadian generally accepted auditing standards. Those standards require that we plan and perform an audit to obtain reasonable assurance whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation.
 
In our opinion, the Schedules of Revenue, Royalties and Operating Expenses present fairly, in all material respects, the revenue, royalties and operating expenses of the Orion Properties for the years ended December 31, 2005 and 2004 in accordance with Canadian generally accepted accounting principles.
 
(signed) “Ernst & Young LLP”
Chartered Accountants
Calgary, Canada
 
November 2, 2006


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ORION PROPERTIES (CP ASSETS)
 
SCHEDULES OF REVENUE, ROYALTIES
AND OPERATING EXPENSES
 
                                 
    9 months ended
    12 Months ended
 
    September 30     December 31  
    2006
    2005
    2005
    2004
 
    $’000     $’000     $’000     $’000  
    (unaudited)              
 
Revenue
    312,369       323,737       459,858       381,602  
Royalties
    48,357       51,340       76,735       64,611  
                                 
      264,012       272,397       383,123       316,991  
Operating Expenses
    73,632       74,144       101,737       90,944  
                                 
Net operating income
    190,380       198,253       281,386       226,047  
                                 
 
See accompanying notes
 


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NOTES TO THE SCHEDULES OF REVENUE ROYALTIES AND OPERATING EXPENSES
Years ended December 31, 2005 and 2004 (audited) and nine month periods ended
September 30, 2006 and 2005 (unaudited)
 
1.  BASIS OF PRESENTATION
 
The Schedules of Revenue, Royalties and Operating Expenses include information relating to the operations of certain oil and gas properties (referred to as the “Orion Properties”) to be acquired by an unnamed Purchaser pursuant to a purchase and sale agreement expected to be executed on or about November 3, 2006. The Orion Properties are comprised of packages of properties in the following areas: West Central Alberta — includes Ante Creek, Goose River and Deer Mountain; Southeast Alberta — includes Bantry and Jenner; Fenn Big Valley; Freefight; Harmattan; Lethbridge and Red Earth — includes Red Earth and Talbot.
 
The schedules, prepared from records supplied by the vendor, include only revenue, royalties and operating expenses directly related to the Orion Properties. The schedules do not include any provision for the depletion, depreciation and amortizations, asset retirement costs, future capital costs, impairment of unevaluated properties, foreign exchange gain (loss), and administrative costs for the Orion Properties, since the Orion Properties form only a part of the consolidated operations of the vendor.
 
2.  SIGNIFICANT ACCOUNTING POLICIES
 
     Joint Operations
 
Substantially all of the Orion Properties are operated through joint ventures. The schedules reflect only the vendor’s proportionate interest in the properties acquired by the Purchaser.
 
     Revenue Recognition
 
Revenue is recorded when the product is delivered and the title passes to an external party. Natural gas revenue is recorded based on a combination of market-based contracts and longer-term dedicated sales contracts specific to the Orion Properties.
 
     Royalties
 
Royalties are recorded at the time the product is produced and sold. Royalties are calculated in accordance with the applicable regulations and/or the terms of individual royalty agreements.
 
     Operating Expenses
 
Operating expenses include amounts incurred on extraction of product to the surface, gathering, field processing, treating, compression and mainline transportation to the point of sale where applicable.


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SCHEDULE “B”
 
PENGROWTH PROFORMA FINANCIAL STATEMENTS
AFTER GIVING EFFECT TO THE CONOCOPHILLIPS ACQUISITION AND
THE STRATEGIC BUSINESS COMBINATION WITH ESPRIT
 
COMPILATION REPORT ON PRO FORMA FINANCIAL STATEMENTS
 
The Board of Directors of Pengrowth Corporation, as Administrators of Pengrowth Energy Trust
 
We have read the accompanying unaudited pro forma consolidated balance sheet of Pengrowth Energy Trust as at September 30, 2006 and unaudited pro forma consolidated statements of income for the nine months then ended and for the year ended December 31, 2005, and have performed the following procedures:
 
  1.  Compared the figures in the columns captioned “Pengrowth Energy Trust” to the unaudited consolidated financial statements of the Trust as at September 30, 2006 and for the nine months then ended, and the audited consolidated financial statements of the Trust for the year ended December 31, 2005, respectively, and found them to be in agreement.
 
  2.  Compared the figures in the columns captioned “Esprit Energy Trust” to the unaudited consolidated financial statements of Esprit Energy Trust as at September 30, 2006 and for the nine months then ended, and the audited consolidated financial statements of Esprit Energy Trust for the year ended December 31, 2005, respectively, and found them to be in agreement.
 
  3.  Compared the figures in the columns captioned “ConocoPhillips Properties” to the unaudited schedules of revenue, royalties and operating expenses for the properties currently being offered for sale by ConocoPhillips for the nine months ended September 30, 2006, and the audited schedules of revenue, royalties and operating expenses for the properties currently being offered for sale by ConocoPhillips for the year ended December 31, 2005, respectively, and found them to be in agreement.
 
  4.  Made enquiries of certain officials of the Trust who have responsibility for financial and accounting matters about:
 
  (a)  the basis for determination of the pro forma adjustments; and
 
  (b)  whether the pro forma financial statements comply as to form in all material respects with the published requirements of Canadian securities legislation.
 
The officials:
 
  (a)  described to us the basis for determination of the pro forma adjustments, and
 
  (b)  stated that the pro forma financial statements comply as to form in all material respects with the published requirements of Canadian securities legislation.
 
  5.  Read the notes to the pro forma financial statements, and found them to be consistent with the basis described to us for determination of the pro forma adjustments.
 
  6.  Recalculated the application of the pro forma adjustments to the aggregate of the amounts in the columns captioned “Pengrowth Energy Trust”, “Esprit Energy Trust” and “ConocoPhillips Properties”, “Esprit Adjustments”, “ConocoPhillips Adjustments” and “Other Adjustments”, as applicable, as at September 30, 2006 and for the nine months then ended, and for the year ended December 31, 2005, and found the amounts in the column captioned “Pro Forma Pengrowth Energy Trust” to be arithmetically correct.
 
A pro forma financial statement is based on management assumptions and adjustments which are inherently subjective. The foregoing procedures are substantially less than either an audit or a review, the objective of which is the expression of assurance with respect to management’s assumptions, the pro forma adjustments, and the application of the adjustments to the historical financial information. Accordingly, we express no such assurance.
 
The foregoing procedures would not necessarily reveal matters of significance to the pro forma financial statements, and we therefore make no representation about the sufficiency of the procedures for the purposes of a reader of such statements.
 
Chartered Accountants
Calgary, Canada
 
November 28, 2006


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COMMENTS FOR UNITED STATES READERS ON DIFFERENCES BETWEEN
CANADIAN AND UNITED STATES REPORTING STANDARDS
 
The above report, provided solely pursuant to Canadian requirements, is expressed in accordance with standards of reporting generally accepted in Canada. To report in conformity with United States standards on the reasonableness of the pro forma adjustments and their application to the pro forma consolidated financial statements requires an examination or review substantially greater in scope than the review we have conducted. Consequently, we are unable to express any opinion in accordance with standards of reporting generally accepted in the United States with respect to the compilation of the accompanying unaudited pro forma financial information.
 
Chartered Accountants
Calgary, Canada
 
November 28, 2006


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Pengrowth Energy Trust
 
Pro Forma Consolidated Balance Sheet
As at September 30, 2006
(Unaudited)
 
                                                         
    Pengrowth
    Esprit
                            Pro Forma
 
    Energy
    Energy
    Esprit
    ConocoPhillips
    Other
          Pengrowth
 
    Trust     Trust     Adjustments     Adjustments     Adjustments           Energy Trust  
 
ASSETS
CURRENT ASSETS
                                                       
Cash
  $ 928     $                                     $ 928  
Accounts receivable
    105,116       37,145                                       142,261  
                                                         
      106,044       37,145                                       143,189  
UNREALIZED MARK-TO-MARKET GAIN ON COMMODITY CONTRACTS
    16,637             10,601                       2 (d)     27,238  
OTHER ASSETS
    19,434       3,386       (3,386 )                     2 (d)     19,434  
LONG TERM INVESTMENTS
    26,990             (19,990 )                     2 (d)     7,000  
GOODWILL
    315,666       175,494       (39,327 )     183,053               2 (d)(f)     634,886  
PROPERTY, PLANT AND EQUIPMENT
    2,556,802       842,061       527,852       1,251,144               2 (d)(f)     5,177,859  
                                                         
                                                         
    $ 3,041,573     $ 1,058,086                                     $ 6,009,606  
                                                         
                             
                                                         
LIABILITIES AND UNITHOLDERS’ EQUITY
                                                         
CURRENT LIABILITIES
                                                       
Accounts payable and accrued liabilities
  $ 124,600     $ 39,912     $ 37,409     $ 5,000               2 (d)(f)   $ 206,921  
Distributions payable to unitholders
    92,252       10,055                                       102,307  
Due to Pengrowth Management Limited
    4,418                                               4,418  
Other liabilities
    24,573                                             24,573  
                                                         
      245,843       49,967                                       338,219  
CONTRACT LIABILITIES
    9,683                                             9,683  
CONVERTIBLE DEBENTURES
          94,134       2,161                       2 (d)(e)(h)     96,295  
LONG-TERM DEBT
    459,910       287,470               1,037,500       (388,120 )     2 (f)(g)     1,384,880  
ASSET RETIREMENT OBLIGATIONS
    229,793       26,395       11,412       95,221               2 (d)(f)     362,821  
FUTURE INCOME TAXES
    207,979       127,724       1,015       296,476               2 (d)(f)     633,194  
                                                         
      1,153,208       585,690                                       2,825,092  
                             
                                                         
TRUST UNITHOLDERS’ EQUITY
                                                         
Trust Unitholders’ capital
    3,040,038       628,015       267,929               388,120       2 (d)(h)     4,324,102  
Contributed surplus
    5,393       10,853       (10,853 )                     2 (d)     5,393  
Equity component of convertible debentures
          2,088       (1,883 )                     2 (d)(e)     205  
Deficit
    (1,157,066 )     (168,560 )     168,560                       2 (d)     (1,157,066 )
                                                         
      1,888,365       472,396                                       3,172,634  
                                                         
    $ 3,041,573     $ 1,058,086                                     $ 6,009,606  
                                                         
 
See accompanying Notes to Pro Forma Consolidated Financial Statements.


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Pengrowth Energy Trust
 
Pro Forma Consolidated Statement of Income
Nine Months Ended September 30, 2006
(Unaudited)
 
                                                             
                                            Pro-Forma
 
    Pengrowth
    Esprit Energy
    ConocoPhillips
    Esprit
    ConocoPhillips
    Other
        Pengrowth
 
    Energy Trust     Trust     Properties     Adjustments     Adjustments     Adjustments         Energy Trust  
 
REVENUES
                                                           
Oil and gas sales
  $ 863,185     $ 244,277       312,369                                 $ 1,419,831  
Processing and other income
    10,524                                               10,524  
Royalties, net of incentives
    (168,435 )     (55,742 )     (48,357 )     (375 )                   3(a)     (272,909 )
                                                             
      705,274       188,535       264,012                                   1,157,446  
Interest and other income
    2,085       1,343                                         3,428  
                                                             
NET REVENUE
    707,359       189,878       264,012                                   1,160,874  
EXPENSES
                                                           
Operating
    170,768       42,872       73,632                                   287,272  
Transportation
    5,299       1,845                                           7,144  
Amortization of injectants for miscible floods
    25,263                                                 25,263  
Interest
    19,340       12,568               217       28,220             3(c)     60,345  
General and administrative
    25,246       18,001                                           43,247  
Management fee
    10,557                                                 10,557  
Foreign exchange gain
    (8,997 )                                               (8,997 )
Depletion and depreciation
    222,396       79,891               51,335       118,062       7,048     3(b)     478,732  
Accretion
    11,721       1,319               949       5,713             3(e)     19,702  
Unrealized gain on commodity contracts
    (16,637 )                                               (16,637 )
Other expenses
    6,142                                               6,142  
                                                             
      471,098       156,496       73,632                                   912,770  
                                                             
NET INCOME BEFORE TAXES AND NON CONTROLLING INTEREST
    236,261       33,382       190,380                                   248,104  
INCOME TAX EXPENSE (REDUCTION)
                                                           
Capital
    11       569                                         580  
Future
    (22,743 )     (20,012 )           (15,120 )     9,980             3(d)     (47,895 )
                                                             
      (22,732 )     (19,443 )                                       (47,315 )
                                                             
NET INCOME BEFORE NON-CONTROLLING INTEREST
    258,993       52,825       190,380                                   295,419  
NON-CONTROLLING INTEREST
          465             (465 )                   3(g)      
                                                             
NET INCOME
  $ 258,993     $ 52,360     $ 190,380                                 $ 295,419  
                                                             
NET INCOME PER TRUST UNIT (Note 4)
                                                           
Basic
  $ 1.61     $ 0.79                                     4   $ 1.37  
                                                             
Diluted
  $ 1.60     $ 0.77                                     4   $ 1.37  
                                                             
 
See accompanying Notes to Pro Forma Consolidated Financial Statements.


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Pengrowth Energy Trust
 
Pro Forma Consolidated Statement of Income
Year Ended December 31, 2005
(Unaudited)
 
                                                             
                                            Pro-Forma
 
    Pengrowth
    Esprit Energy
    ConocoPhillips
    Esprit
    ConocoPhillips
    Other
        Pengrowth Energy
 
    Energy Trust     Trust     Properties     Adjustments     Adjustments     Adjustments         Trust  
 
REVENUES
                                                           
Oil and gas sales
  $ 1,151,510     $ 290,283     $ 459,858                                 $ 1,901,651  
Processing and other income
    15,091                                               15,091  
Royalties, net of incentives
    (213,863 )     (67,645 )     (76,735 )     (500 )                   3(a)     (358,743 )
                                                             
      952,738       222,638       383,123                                   1,557,999  
Interest and other income
    2,596                                               2,596  
                                                             
NET REVENUE
    955,334       222,638       383,123                                   1,560,595  
EXPENSES
                                                           
Operating
    218,115       47,149       101,737                                   367,001  
Transportation
    7,891       2,449                                           10,340  
Amortization of injectants for miscible floods
    24,393                                                 24,393  
Interest
    21,642       8,340               290       37,627             3(c)     67,899  
General and administrative
    30,272       10,690                                           40,962  
Plan of Arrangement and other
          849                                           849  
Management fee
    15,961                                                 15,961  
Foreign exchange gain
    (6,966 )                                               (6,966 )
Depletion and depreciation
    284,989       74,784               60,878       136,708       24,233     3(b)     581,592  
Accretion
    14,162       1,198             1,827       7,618             3(e)     24,805  
                                                             
      610,459       145,459       101,737                                   1,126,836  
                                                             
NET INCOME BEFORE TAXES AND NON CONTROLLING INTEREST
    344,875       77,179       281,386                                   433,759  
INCOME TAX EXPENSE (REDUCTION)
                                                           
Capital
    6,273       1,121                                         7,394  
Future
    12,276       (822 )           (18,120 )     26,420             3(d)     19,754  
                                                             
      18,549       299                                         27,148  
NET INCOME BEFORE
NON CONTROLLING INTEREST
    326,326       76,880       281,386                                   406,611  
NON CONTROLLING INTEREST
          2,428             (2,428 )                   3(g)      
                                                             
NET INCOME
  $ 326,326     $ 74,452     $ 281,386                                 $ 406,611  
                                                             
NET INCOME PER TRUST UNIT (PNote 16)
                                                           
Basic
  $ 2.08     $ 1.31                                     4   $ 1.92  
                                                             
Diluted
  $ 2.07     $ 1.28                                     4   $ 1.89  
                                                             
 
See accompanying Notes to Pro Forma Consolidated Financial Statements.


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Pengrowth Energy Trust
 
Notes To Pro Forma Consolidated Financial Statements
(Unaudited)
As at and for the nine months ended September 30, 2006 and for the year ended December 31, 2005
(Tabular amounts are stated in thousands of dollars except per trust unit amounts)
 
1.  BASIS OF PRESENTATION
 
The accompanying unaudited pro forma consolidated balance sheet as at September 30, 2006 and the pro forma consolidated statements of income for the nine months ended September 30, 2006 and the year ended December 31, 2005 have been prepared for inclusion in the prospectus supplement relating to the offering of trust units of Pengrowth Energy Trust (Pengrowth).
 
On October 2, 2006 Pengrowth and Esprit Energy Trust (Esprit) completed the previously announced business combination (the “Esprit Combination”). As a result of the combination, approximately 35,514,327 Pengrowth trust units were issued to Esprit unitholders, including 789,170 Pengrowth trust units issued to Pengrowth Corporation which were exchanged with and immediately cancelled by Pengrowth. Esprit became a wholly owned subsidiary of Pengrowth on October 2, 2006.
 
On November 28, 2006 Pengrowth and Burlington Resources Canada Ltd., a wholly-owned subsidiary of ConocoPhillips, entered into a share purchase and sale agreement with ConocoPhillips Canada to acquire all the issued and outstanding shares of various companies which have interests in oil and natural gas assets in Alberta and Saskatchewan (CP Assets) for consideration of $1.0 billion.
 
The pro forma financial statements have been prepared by management in accordance with Canadian generally accepted accounting principles. The pro forma consolidated balance sheet gives effect to the transaction and assumptions described herein as if they occurred as at the date of the balance sheet. The pro forma consolidated statements of income give effect to the transactions and assumptions described herein as if they occurred at the beginning of the respective periods. In the opinion of management, the pro forma consolidated financial statements include all the necessary adjustments for the fair presentation of the ongoing entity. In preparing these pro forma consolidated financial statements, no adjustments have been made to reflect the possible operating synergies and administrative cost savings that could result from combining the operations of Pengrowth, Esprit and the CP Assets. The pro forma consolidated financial statements may not be indicative of the results that actually would have occurred if the events reflected therein had been in effect on the dates indicated or of the results which may be obtained in the future.
 
The accounting principles used in the preparation of the pro forma consolidated financial statements are consistent with those used in the unaudited interim consolidated financial statements of Pengrowth as at and for the nine months ended September 30, 2006 and the audited consolidated financial statements of Pengrowth as at and for the year ended December 31, 2005. The pro forma consolidated financial statements have been prepared from information derived from, and should be read in conjunction with, the audited consolidated financial statements of Esprit and Pengrowth as at and for the year ended December 31, 2005 , the audited schedule of revenue, royalties and operating costs of the CP Assets for the year ended December 31, 2005, the unaudited consolidated financial statements of Esprit and Pengrowth as at and for the nine months ended September 30, 2006 and the unaudited schedule of revenue, royalties and operating costs of the CP Assets for the nine months ended September 30, 2006.
 
2.  PRO FORMA TRANSACTIONS, ASSUMPTIONS AND ADJUSTMENTS (AS AT SEPTEMBER 30, 2006)
 
The unaudited pro forma consolidated balance sheet gives effect to the following transactions, assumptions and adjustments:
 
  (a) Through the Esprit Combination, the assets of Esprit were acquired by Pengrowth on the basis of 0.53 units of Pengrowth for each Esprit unit.
 
  (b) For the purposes of the purchase price determination for Esprit, Pengrowth has used a unit price of $25.80 per unit, being the weighted average market price of Pengrowth Trust Units on the five days surrounding the announcement of the Esprit Combination.
 
  (c) On September 30, 2006 Esprit had approximately 67,008,164 Trust Units outstanding, including 1,489,000 Esprit units held by Pengrowth. Pengrowth issued approximately 35,514,327 trust units to Esprit unitholders on October 2, 2006, including approximately 789,170 units issued to Pengrowth and immediately cancelled.
 
  (d) The Esprit transaction has been accounted for using the purchase price method with the allocation as follows:
 
         
Consideration:
       
Pengrowth trust units issued
  $ 895,944  
Esprit units purchased for cash
    19,990  
Acquisition costs
    5,042  
         
    $ 920,976  
         
Allocated as follows:
       
Property, plant and equipment
  $ 1,369,913  
Goodwill
    136,167  
Deferred hedging gain
    10,601  
Bank debt
    (287,470 )
Convertible debentures
    (96,500 )
Asset retirement obligations
    (37,807 )
Future income taxes
    (128,739 )
Working capital acquired, including liabilities incurred by Esprit prior to closing of $32,367
    (45,189 )
         
    $ 920,976  
         
 
The allocation of the purchase price is based on preliminary estimates of fair value and may be revised as additional information becomes available.


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(e) The convertible debentures, including the equity component for the conversion feature, have been recorded at their estimated fair value.
 
  (f) The ConocoPhillips transaction has been accounted for using the purchase price method with the allocation as follows:
 
         
Consideration:
       
Cash
  $ 1,037,500  
Acquisition Costs
    5,000  
         
    $ 1,042,500  
         
Allocated as follows:
       
Property, plant and equipment
  $ 1,251,144  
Goodwill
    183,053  
Asset retirement obligations
    (95,221 )
Future income taxes
    (296,476 )
         
    $ 1,042,500  
         
 
The allocation of the purchase price is based on preliminary estimates of fair value and may be revised as additional information becomes available.
 
  (g) the acquisition will be financed through a bridge credit facility with the net proceeds from the issuance of trust units pursuant to the prospectus supplement (note 2(h)) used to reduce the amount of borrowings under the bridge credit facility.
 
  (h) The issuance of 20 million trust units under the prospectus supplement at $20.48 per trust unit (based on November 27, 2006 closing price on the TSX) for consideration of $388 million (net of underwriters’ fees and issue costs of approximately $22 million).
 
3.  PRO FORMA TRANSACTIONS, ASSUMPTIONS AND ADJUSTMENTS (FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2006 AND THE YEAR ENDED DECEMBER 31, 2005)
 
The unaudited pro forma consolidated statements of income for the nine month period ended September 30, 2006 and for the year ended December 31, 2005 give effect to the transactions and adjustments referred to in note 2 effective January 1, 2006 and January 1, 2005 respectively, and the following:
 
  (a) Pengrowth has claimed the maximum credit available under the Alberta Royalty Tax Credit (“ARTC”) program; therefore, royalties have been adjusted to remove ARTC claimed by Esprit.
 
  (b) Depletion and depreciation expense has been increased to reflect the pro forma adjustment to the carrying value of property, plant and equipment and other assets. The depletion rate has been adjusted based on the combined reserves and production of Pengrowth, Esprit the CP Assets.
 
  (c) Interest expense has been increased to reflect the additional interest on the $650 million of debt incurred to finance the acquisition of the CP Assets. Pengrowth has estimated the net present value of the consolidated pro forma asset retirement obligations at $363 million, based on a total future liability of $1,193 million, in current dollars.
 
  (d) The provision for future income taxes has been decreased to give effect to the pro forma adjustments.
 
  (e) The accretion expense has been increased to reflect the additional asset retirement obligations from the acquisitions of Esprit and the CP assets. Pengrowth has estimated the net present value of the consolidated pro forma asset retirement obligations at $363 million, based on a total future liability of $1,193 million, in current dollars.
 
  (f) As described in note 2, the allocation of the purchase price is based on preliminary estimates of fair value and may be revised as additional information becomes available. For purposes of preparing the unaudited pro forma consolidated statement of income, no assumptions were made in testing for impairment of goodwill.
 
  (g) In conjunction with the Esprit Combination, the exchangeable shares of Esprit were exchanged for Esprit trust units prior to the combination. As a result, there are no non-controlling interest holders in Esprit’s subsidiaries.
 
4.  PRO FORMA TRUST UNITS OUTSTANDING
 
                 
    Number of Weighted Average
 
    Trust Units  
For the nine months ended September 30, 2006
  Basic     Diluted  
 
Trust units held by Pengrowth unitholders
    160,753       161,401  
Pengrowth trust units issued to Esprit unitholders
    34,725       34,725  
Pengrowth trust units issuable on conversion of convertible debt
          3,750  
Pengrowth trust units pursuant to prospectus supplement
    20,000       20,000  
                 
      215,478       219,876  
                 
 


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    Number of Weighted Average
 
    Trust Units  
For the year ended December 31, 2005
  Basic     Diluted  
 
Trust units held by Pengrowth unitholders
    157,127       157,914  
Pengrowth trust units issued to former Esprit unitholders
    34,725       34,725  
Pengrowth trust units issuable on conversion of convertible debt
          3,750  
Pengrowth trust units pursuant to prospectus supplement
    20,000       20,000  
                 
      211,852       216,389  
                 
 
In calculating diluted net income per unit, interest and accretion on convertible debentures of $4.7 million was added back to net income for the nine months ended September 30, 2006 and interest and accretion on convertible debentures of $2.9 million was added back to net income for the year ended December 31, 2005.
 
5.  APPLICATION OF UNITED STATES GENERALLY ACCEPTED ACCOUNTING PRINCIPLES
 
The application of United Stated generally accepted accounting principles (“US GAAP”) would have the following effect on the pro forma consolidated statements of income:
                 
    Pro Forma  
    September 30, 2006     December 31, 2005  
 
Net Income per pro forma statement of income
  $ 295,419     $ 406,611  
Net income adjustments under US GAAP(1)
    29,131       15,087  
                 
Net Income under US GAAP
  $ 324,550     $ 421,698  
Other comprehensive income adjustments under US GAAP(1)
    18,854       (25,470 )
                 
Net income and comprehensive income under US GAAP
  $ 343,404     $ 396,228  
                 
 
Note:
  (1)  These adjustments reflect those made in the September 30, 2006 and December 31, 2005 US GAAP reconciliation of Pengrowth and, where applicable, Esprit. There are no difference between Canadian GAAP and US GAAP as it pertains to the schedules of revenue, royalties and operating costs of the CP Assets.
 
The application of US GAAP would have the following effect on the pro forma consolidated balance sheet, as at September 30, 2006:
 
                         
    Pro Forma
    Increase
    Pro Forma
 
    Cdn GAAP     (Decrease)(1)     US GAAP  
 
ASSETS
                       
Accounts receivable
  $ 142,261     $ 212     $ 142,473  
Current portion of unrealized foreign exchange gain
          457       457  
Deferred charges
    19,434       (159 )     19,275  
Property, plant and equipment and other assets
    5,177,859       (175,546 )     5,002,313  
LIABILITIES
                       
Current portion of unrealized hedging loss
          1,800       1,800  
Convertible debentures
    96,295       205       95,500  
TRUST UNITHOLDERS’ EQUITY
                       
Accumulated other comprehensive income
  $     $ 701     $ 701  
Equity component of convertible debentures
    205       (205 )      
Deficit
    (1,157,066 )     177,537       (979,529 )
 
Note:
  (1)  These adjustments reflect those made in the September 30, 2006 US GAAP reconciliation of Pengrowth and, where applicable, Esprit.

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Table of Contents

 
SCHEDULE “C”
 
PENGROWTH UPDATED RESERVES INFORMATION
 
SUMMARY OF OIL AND GAS RESERVES
AND NET PRESENT VALUES OF FUTURE NET REVENUE
as of November 1, 2006
(using constant prices and costs as at October 31, 2006)
 
CONSTANT PRICES AND COSTS
 
                                                 
    OIL AND GAS RESERVES  
    LIGHT AND
    HEAVY
    NATURAL
 
    MEDIUM OIL     OIL     GAS  
    Pengrowth
          Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mbbls)     (mbbls)     (bcf)     (bcf)  
 
Proved Reserves
                                               
Proved Developed Producing
    64,585       55,077       9,465       8,462       529.4       414.6  
Proved Developed Non-Producing
    425       358       74       63       34.4       26.9  
Proved Undeveloped
    19,737       16,104       1,589       1,336       59.3       44.6  
                                                 
Total Proved Reserves
    84,747       71,539       11,128       9,861       623.1       486.1  
Probable Reserves
    27,541       22,677       3,244       2,809       200.4       154.9  
                                                 
Total Proved Plus Probable Reserves
    112,287       94,215       14,372       12,670       823.6       641.1  
                                                 
 
                                 
    NATURAL GAS LIQUIDS     TOTAL OIL EQUIVALENT BASIS(1)  
    Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mboe)     (mboe)  
 
Proved Reserves
                               
Proved Developed Producing
    19,272       13,737       181,555       146,373  
Proved Developed Non-Producing
    753       524       6,993       5,434  
Proved Undeveloped
    2,866       2,020       34,074       26,896  
                                 
Total Proved Reserves
    22,890       16,281       222,623       178,702  
Probable Reserves
    6,659       4,774       70,444       55,954  
                                 
Total Proved Plus Probable Reserves
    29,573       21,028       294,204       235,577  
                                 
 
 
Note:
 
(1)  Natural gas has been converted to barrels of oil equivalent on the basis of six mcf of natural gas being equal to one boe.
 
                                         
    NET PRESENT VALUES OF FUTURE NET REVENUE
 
    CONSTANT PRICES AND COSTS  
    BEFORE INCOME TAXES
 
    DISCOUNTED AT (%/YEAR)  
RESERVES CATEGORY
  0%     5%     10%     15%     20%  
    ($MM)     ($MM)     ($MM)     ($MM)     ($MM)  
 
Proved Reserves
                                       
Proved Developed Producing
    4,555.9       3,427.8       2,781.8       2,364.5       2,071.7  
Proved Developed Non-Producing
    184.9       143.0       117.8       100.8       88.4  
Proved Undeveloped
    870.6       602.8       444.1       341.6       271.0  
                                         
Total Proved Reserves
    5,611.4       4,173.5       3,343.7       2,806.8       2,431.1  
Probable Reserves
    1,943.7       1,156.3       798.7       601.8       478.6  
                                         
Total Proved Plus Probable Reserves
    7,555.1       5,329.8       4,142.5       3,408.6       2,909.7  
                                         


C-1


Table of Contents

 
SCHEDULE “D”
 
CONOCOPHILLIPS PROPERTIES RESERVES INFORMATION
 
SUMMARY OF OIL AND GAS RESERVES
AND NET PRESENT VALUES OF FUTURE NET REVENUE
as of November 1, 2006
(using constant prices and costs as at October 31, 2006)
 
CONSTANT PRICES AND COSTS
 
                                                 
    OIL AND GAS RESERVES  
    LIGHT AND
    HEAVY
    NATURAL
 
    MEDIUM OIL     OIL     GAS  
    Pengrowth
          Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mbbls)     (mbbls)     (bcf)     (bcf)  
 
Proved Reserves
                                               
Proved Developed Producing
    13,188       11,897       5,326       4,957       140.6       120.7  
Proved Developed Non-Producing
    284       246       0       0       2.7       2.1  
Proved Undeveloped
    1,476       1,112       313       263       21.1       19.1  
                                                 
Total Proved Reserves
    14,948       13,255       5,639       5,220       164.4       141.9  
Probable Reserves
    5,126       4,466       1,575       1,414       41.3       35.7  
                                                 
Total Proved Plus Probable Reserves
    20,074       17,722       7,214       6,635       205.7       177.5  
                                                 
 
 
                                 
    NATURAL GAS
    TOTAL OIL
 
    LIQUIDS     EQUIVALENT BASIS(1)  
    Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mboe)     (mboe)  
 
Proved Reserves
                               
Proved Developed Producing
    2,911       2,058       44,865       39,021  
Proved Developed Non-Producing
    51       31       786       628  
Proved Undeveloped
    134       90       5,435       4,650  
                                 
Total Proved Reserves
    3,096       2,179       51,086       44,299  
Probable Reserves
    778       542       14,365       12,365  
                                 
Total Proved Plus Probable Reserves
    3,874       2,721       65,449       56,664  
                                 
 
 
Note:
 
(1)   Natural gas has been converted to barrels of oil equivalent on the basis of six mcf of natural gas being equal to one boe.
 
 
                                         
    NET PRESENT VALUES OF FUTURE NET REVENUE
 
    CONSTANT PRICES AND COSTS  
    BEFORE INCOME TAXES
 
    DISCOUNTED AT (%/YEAR)  
RESERVES CATEGORY
  0%     5%     10%     15%     20%  
    ($MM)     ($MM)     ($MM)     ($MM)     ($MM)  
 
Proved Reserves
                                       
Proved Developed Producing
    921.6       747.5       632.1       550.3       489.3  
Proved Developed Non-Producing
    20.3       14.4       11.0       8.8       7.4  
Proved Undeveloped
    97.3       60.0       39.2       26.4       18.0  
                                         
Total Proved Reserves
    1,039.2       821.8       682.3       585.5       514.7  
Probable Reserves
    311.1       196.2       137.3       102.8       80.7  
                                         
Total Proved Plus Probable Reserves
    1,350.3       1,018.0       819.6       688.4       595.4  
                                         


D-1


Table of Contents

 
SCHEDULE “E”
 
PENGROWTH PRO FORMA RESERVES INFORMATION(1)
 
SUMMARY OF OIL AND GAS RESERVES
AND NET PRESENT VALUES OF FUTURE NET REVENUE
as of November 1, 2006
(using constant prices and costs as at October 31, 2006)
 
CONSTANT PRICES AND COSTS
 
                                                 
    OIL AND GAS RESERVES  
    LIGHT AND
    HEAVY
    NATURAL
 
    MEDIUM OIL     OIL     GAS  
    Pengrowth
          Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mbbls)     (mbbls)     (bcf)     (bcf)  
 
Proved Reserves
                                               
Proved Developed Producing
    77,773       66,975       14,791       13,419       670.0       535.2  
Proved Developed Non-Producing
    709       604       74       63       37.1       29.0  
Proved Undeveloped
    21,213       17,216       1,903       1,599       80.4       63.7  
                                                 
Total Proved Reserves
    99,695       84,794       16,767       15,082       787.6       628.0  
Probable Reserves
    32,667       27,143       4,819       4,223       241.7       190.6  
                                                 
Total Proved Plus Probable Reserves
    132,362       111,937       21,587       19,305       1,029.3       818.6  
                                                 
 
                                 
    NATURAL GAS LIQUIDS     TOTAL OIL EQUIVALENT BASIS(1)  
    Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mboe)     (mboe)  
 
Proved Reserves
                               
Proved Developed Producing
    22,183       15,795       226,420       185,394  
Proved Developed Non-Producing
    804       555       7,780       6,062  
Proved Undeveloped
    3,000       2,110       39,509       31,546  
                                 
Total Proved Reserves
    25,986       18,460       273,708       223,001  
Probable Reserves
    7,463       5,344       85,239       68,475  
                                 
Total Proved Plus Probable Reserves
    33,449       23,803       358,944       291,477  
                                 
 
 
Note:
 
(1)  Natural gas has been converted to barrels of oil equivalent on the basis of six mcf of natural gas being equal to one boe.
 
                                         
    NET PRESENT VALUES OF FUTURE NET REVENUE
 
    CONSTANT PRICES AND COSTS  
    BEFORE INCOME TAXES
 
    DISCOUNTED AT (%/YEAR)  
RESERVES CATEGORY
  0%     5%     10%     15%     20%  
    ($MM)     ($MM)     ($MM)     ($MM)     ($MM)  
 
Proved Reserves
                                       
Proved Developed Producing
    5,477.5       4,175.2       3,413.9       2,914.7       2,561.0  
Proved Developed Non-Producing
    205.2       157.3       128.8       109.6       95.7  
Proved Undeveloped
    967.9       662.8       483.3       368       289.0  
                                         
Total Proved Reserves
    6,650.6       4,995.3       4,026.0       3,392.4       2,945.8  
Probable Reserves
    2,254.8       1,352.5       936.0       704.6       559.3  
                                         
Total Proved Plus Probable Reserves
    8,905.4       6,347.8       4,962.0       4,097.0       3,505.1  
                                         
 
 
Note:
 
(1)  Pro forma, assuming completion of the ConocoPhillips Acquisition.


E-1


Table of Contents

 
SCHEDULE “F”
 
PENGROWTH UPDATED RESERVES INFORMATION
 
SUMMARY OF OIL AND GAS RESERVES
AND NET PRESENT VALUES OF FUTURE NET REVENUE
AS PER GLJ’S AND SAL’S EVALUATION
as of November 1, 2006
(using strip prices and costs as at October 31, 2006)
 
STRIP PRICES AND COSTS
 
                                                 
    OIL AND GAS RESERVES  
    LIGHT AND
    HEAVY
    NATURAL
 
    MEDIUM OIL     OIL     GAS  
    Pengrowth
          Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mbbls)     (mbbls)     (bcf)     (bcf)  
 
Proved Reserves
                                               
Proved Developed Producing
    64,626       55,620       10,047       8,710       528.7       413.9  
Proved Developed Non-Producing
    463       395       82       70       34.5       27.0  
Proved Undeveloped
    19,737       16,248       1,787       1,499       59.4       44.7  
                                                 
Total Proved Reserves
    84,827       72,263       11,917       10,279       622.6       485.5  
Probable Reserves
    27,565       23,164       3,186       2,652       200.2       154.8  
                                                 
Total Proved Plus Probable Reserves
    112,392       95,428       15,103       12,930       822.8       640.3  
                                                 
 
                                 
    NATURAL GAS LIQUIDS     TOTAL OIL EQUIVALENT BASIS(1)  
    Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mboe)     (mboe)  
 
Proved Reserves
                               
Proved Developed Producing
    19,256       13,714       182,045       147,032  
Proved Developed Non-Producing
    760       531       7,055       5,487  
Proved Undeveloped
    2,865       2,019       34,283       27,210  
                                 
Total Proved Reserves
    22,880       16,264       223,386       179,729  
Probable Reserves
    6,688       4,801       70,809       56,410  
                                 
Total Proved Plus Probable Reserves
    29,569       21,065       294,196       236,138  
                                 
 
 
Note:
 
(1)  Natural gas has been converted to barrels of oil equivalent on the basis of six mcf of natural gas being equal to one boe.
 
                                         
    NET PRESENT VALUES OF FUTURE NET REVENUE
 
    STRIP PRICES AND COSTS  
    BEFORE INCOME TAXES DISCOUNTED AT (%/YEAR)  
RESERVES CATEGORY
  0%     5%     10%     15%     20%  
    ($MM)     ($MM)     ($MM)     ($MM)     ($MM)  
 
Proved Reserves
                                       
Proved Developed Producing
    5,410.1       4,011.4       3,241.5       2,755.1       2,417.8  
Proved Developed Non-Producing
    203.3       155.6       128.3       110.3       97.2  
Proved Undeveloped
    1,065.5       727.0       534.9       413.3       330.5  
                                         
Total Proved Reserves
    6,678.9       4,894.0       3,904.7       3,278.7       2,845.6  
Probable Reserves
    2,497.3       1,402.3       943.4       703.0       557.3  
                                         
Total Proved Plus Probable Reserves
    9,176.2       6,296.2       4,848.1       3,981.7       3,402.9  
                                         


F-1


Table of Contents

 
SCHEDULE “G”
 
 
CONOCOPHILLIPS PROPERTIES RESERVES INFORMATION

SUMMARY OF OIL AND GAS RESERVES
AND NET PRESENT VALUES OF FUTURE NET REVENUE
AS PER GLJ’S EVALUATION
as of November 1, 2006
(using strip prices and costs as at October 31, 2006)

STRIP PRICES AND COSTS
 
                                                 
    OIL AND GAS RESERVES  
    LIGHT AND
    HEAVY
    NATURAL
 
    MEDIUM OIL     OIL     GAS  
    Pengrowth
          Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mbbls)     (mbbls)     (bcf)     (bcf)  
 
Proved Reserves
                                               
Proved Developed Producing
    13,405       12,095       5,940       5,551       137.8       118.1  
Proved Developed Non-Producing
    286       247       0       0       2.7       2.1  
Proved Undeveloped
    1,477       1,113       334       284       21.0       19.1  
                                                 
Total Proved Reserves
    15,168       13,455       6,273       5,834       161.5       139.2  
Probable Reserves
    5,192       4,526       1,639       1,476       40.3       34.8  
                                                 
Total Proved Plus Probable Reserves
    20,360       17,981       7,912       7,310       201.8       174.0  
                                                 
 
                                 
          TOTAL OIL
 
    NATURAL GAS LIQUIDS     EQUIVALENT BASIS(1)  
    Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mboe)     (mboe)  
 
Proved Reserves
                               
Proved Developed Producing
    2,901       2,050       45,214       39,372  
Proved Developed Non-Producing
    51       32       787       629  
Proved Undeveloped
    134       90       5,448       4,663  
                                 
Total Proved Reserves
    3,086       2,171       51,449       44,663  
Probable Reserves
    774       540       14,321       12,334  
                                 
Total Proved Plus Probable Reserves
    3,860       2,711       65,770       56,998  
                                 
 
 
Note:
 
(1)  Natural gas has been converted to barrels of oil equivalent on the basis of six mcf of natural gas being equal to one boe.
 
                                         
    NET PRESENT VALUES OF FUTURE NET REVENUE
 
    STRIP PRICES AND COSTS  
    BEFORE INCOME TAXES
 
    DISCOUNTED AT (%/YEAR)  
RESERVES CATEGORY
  0%     5%     10%     15%     20%  
    ($MM)     ($MM)     ($MM)     ($MM)     ($MM)  
 
Proved Reserves
                                       
Proved Developed Producing
    1,103.6       900.1       765.2       669.1       597.3  
Proved Developed Non-Producing
    24.1       16.7       12.7       10.3       8.6  
Proved Undeveloped
    115.4       71.7       48.2       34.0       24.6  
                                         
Total Proved Reserves
    1,243.2       988.5       826.1       713.4       630.5  
Probable Reserves
    391.5       242.6       168.6       126.1       99.1  
                                         
Total Proved Plus Probable Reserves
    1,634.6       1,231.1       994.7       839.4       729.6  
                                         


G-1


Table of Contents

 
SCHEDULE “H”
 
PENGROWTH PRO FORMA RESERVES INFORMATION(1)
 
SUMMARY OF OIL AND GAS RESERVES
AND NET PRESENT VALUES OF FUTURE NET REVENUE
AS PER GLJ’S AND SAL’S EVALUATION
as of November 1, 2006
(using strip prices and costs as at October 31, 2006)
 
STRIP PRICES AND COSTS
 
                                                 
    OIL AND GAS RESERVES  
    LIGHT AND
    HEAVY
    NATURAL
 
    MEDIUM OIL     OIL     GAS  
    Pengrowth
          Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mbbls)     (mbbls)     (bcf)     (bcf)  
Proved Reserves
                                               
Proved Developed Producing
    78,031       67,715       15,987       14,261       666.5       532.0  
Proved Developed Non-Producing
    749       642       82       70       37.2       29.0  
Proved Undeveloped
    21,214       17,361       2,121       1,783       80.4       63.7  
                                                 
Total Proved Reserves
    99,995       85,718       18,190       16,113       784.1       624.8  
Probable Reserves
    32,757       27,690       4,825       4,128       240.5       1189.5  
                                                 
Total Proved Plus Probable Reserves
    132,752       113,409       23,015       20,240       1,024.6       814.3  
                                                 
 
                                 
    NATURAL GAS
    TOTAL OIL
 
    LIQUIDS     EQUIVALENT BASIS(1)  
    Pengrowth
          Pengrowth
       
RESERVES CATEGORY
  Interest     Net     Interest     Net  
    (mbbls)     (mbbls)     (mboe)     (mboe)  
Proved Reserves
                               
Proved Developed Producing
    22,157       15,764       227,259       186,403  
Proved Developed Non-Producing
    811       563       7,842       6,116  
Proved Undeveloped
    2,999       2,109       39,731       31,873  
                                 
Total Proved Reserves
    25,966       18,435       274,835       224,391  
Probable Reserves
    7,462       5,341       85,130       68,744  
                                 
Total Proved Plus Probable Reserves
    33,429       23,776       359,966       293,136  
                                 
 
 
Note:
 
(1)  Natural gas has been converted to barrels of oil equivalent on the basis of six mcf of natural gas being equal to one boe.
 
                                         
    NET PRESENT VALUES OF FUTURE NET REVENUE
 
    STRIP PRICES AND COSTS  
    BEFORE INCOME TAXES
 
    DISCOUNTED AT (%/YEAR)  
RESERVES CATEGORY
  0%     5%     10%     15%     20%  
    ($MM)     ($MM)     ($MM)     ($MM)     ($MM)  
Proved Reserves
                                       
Proved Developed Producing
    6,513.8       4,911.5       4,006.7       3,424.2       3,015.1  
Proved Developed Non-Producing
    227.4       172.3       141.1       120.5       105.8  
Proved Undeveloped
    1,180.9       798.7       583.0       447.3       355.2  
                                         
Total Proved Reserves
    7,922.0       5,882.5       4,730.8       3,992.1       3,476.1  
Probable Reserves
    2,888.8       1,644.9       1,112.0       829.1       656.4  
                                         
Total Proved Plus Probable Reserves
    10,810.8       7,527.4       5,842.8       4,821.2       4,132.5  
                                         
 
 
Note:
 
(1)  Pro forma, assuming completion of the ConocoPhillips Acquisition.


H-1


Table of Contents

 
SCHEDULE “I”
 
PRICING ASSUMPTIONS
 
SUMMARY OF PRICING ASSUMPTIONS RESERVES INFORMATION
as of October 31, 2006
 
CONSTANT PRICES AND COSTS
 
                                                                         
    OIL     NATURAL
                         
    WTI
    Edmonton
    Cromer
    Hardisty
    GAS     NGLx(1)        
    Cushing
    Par Price
    Medium
    Heavy
    AECO Gas
                Pentanes
    EXCHANGE
 
YEAR(3)
  Oklahoma     400 API     29.30 API     120 API     Price     Propane     Butane     Plus     RATE(2)  
    ($US/bbl)     ($Cdn/bbl)     ($Cdn/bbl)     ($Cdn/bbl)     ($Cdn/mmbtu)     ($Cdn/bbl)     ($Cdn/bbl)     ($Cdn/bbl)     ($US/Cdn)  
 
2006(4)
    58.73       61.72       49.20       25.45       7.21       43.20       52.46       62.07       0.8907  
 
 
Notes:
 
(1)    FOB Edmonton.
 
(2)    The exchange rate used to generate the benchmark reference prices in this table.
 
(3)    Information provided as at November 1, 2006.
 
(4)    This forecast represents the constant price forecast used by GLJ.
 
NYMEX (October 31, 2006) FORWARD STRIP PRICING UNTIL 2011
 
                                                                         
                LIGHT CRUDE OIL     HEAVY
    NGLs
       
                WTI
    Edmonton
    CRUDE OIL     AT EDMONTON        
    Exchange
          Cushing
    Par Price
    Heavy
                Pentanes
       
Year
  Rate     Inflation     Oklahoma     40 API     at Hardisty     Propane     Butane     Plus     Sulphur  
    $US/$Cdn     %     $US/bbl     $Cdn/bbl     $Cdn/bbl     $Cdn/bbl     $Cdn/bbl     $Cdn/bbl     $Cdn/lt  
 
2006
    0.8868       0.0       58.73       65.21       37.96       41.71       48.21       66.46       28.00  
2007
    0.9037       2.0       64.59       70.48       41.48       45.23       52.23       71.98       18.50  
2008
    0.9046       2.0       67.46       73.58       44.58       47.08       54.33       75.08       7.00  
2009
    0.9142       2.0       67.06       72.36       44.61       46.36       53.61       73.86       7.00  
2010
    0.9254       2.0       65.79       70.12       43.87       44.87       51.87       71.62       8.00  
2011
    0.9254       2.0       64.58       68.81       44.06       44.06       50.81       70.31       9.50  
Thereafter
    0.9254       2.0       +2%/YEAR       +2%/YEAR       +2%/YEAR       +2%/YEAR       +2%/YEAR       +2%/YEAR       +2%/YEAR  
 
                                                 
                NATURAL GAS  
    Exchange
                Sable
    Alberta Spot
    Alberta Spot
 
Year
  Rate     Inflation     Henry Hub     Plant-gate     Plant-gate     @AECO-C  
    $US/$Cdn     %     $US mmbtu     $Cdn/mmbtu     $Cdn/mmbtu     $Cdn/mmbtu  
 
2006
    0.8868       0.0       7.53       7.59       7.31       7.52  
2007
    0.9037       2.0       7.86       8.58       7.82       8.04  
2008
    0.9046       2.0       8.08       8.09       7.72       7.94  
2009
    0.9142       2.0       7.75       7.52       7.41       7.62  
2010
    0.9254       2.0       7.38       6.83       6.81       7.02  
2011
    0.9254       2.0       6.92       6.60       6.57       6.78  
Thereafter
    0.9254       2.0       +2%/YEAR       +2%/YEAR       +2%/YEAR       +2%/YEAR  
 
Note:
 
(1)    The Strip Price forecast has been estimated by GLJ using as a basis the NYMEX futures strip for light sweet crude oil and natural gas for the indicated date. The light sweet crude oil contracts require delivery at Cushing, Oklahoma and the natural gas contracts require delivery to Henry Hub in Louisiana. GLJ uses historically derived differentials to estimate the price at the various points, for the different product types and for the different crude qualities. These prices are applied to the various products to calculate the revenue.


I-1