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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549


                                   FORM 8-A

               FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                    PURSUANT TO SECTION 12(b) OR (g) OF THE
                        SECURITIES EXCHANGE ACT OF 1934



                             PENGROWTH ENERGY TRUST
             (Exact name of registrant as specified in its charter)

       ALBERTA, CANADA                                          N/A
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(State or other jurisdiction of                          (I.R.S. Employer
 incorporation or organization)                         Identification No.)

SUITE 2900, 240 - 4TH AVE S.W.
CALGARY, ALBERTA, CANADA                                     T2P 4H4
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(Address of principal executive offices)                    (Zip Code)

If this form relates to the registration of a class of securities  pursuant to
Section  12(b)  of the  Exchange  Act and is  effective  pursuant  to  General
Instruction A. (c), check the following box. |X|

If this form relates to the registration of a class of securities  pursuant to
Section  12(g)  of the  Exchange  Act and is  effective  pursuant  to  General
Instruction A. (d), check the following box. |_|

Securities  Act  registration  file  number  to which  this form  relates  (if
applicable): N/A

Securities to be registered pursuant to Section 12(b) of the Act:


       TITLE OF EACH CLASS                  NAME OF EACH EXCHANGE ON WHICH
        TO BE REGISTERED                    EACH CLASS IS TO BE REGISTERED
        ----------------                    ------------------------------
           Trust Units                         New York Stock Exchange


Securities to be registered pursuant to Section 12(g) of the Act:  None


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                INFORMATION REQUIRED IN REGISTRATION STATEMENT


ITEM 1.  DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.

        This registration statement relates to the registration, with the U.S.
Securities and Exchange Commission (the "Commission"),  of trust units without
nominal  or par value  (the  "Trust  Units") of  Pengrowth  Energy  Trust (the
"Trust" or the  "Registrant"),  an oil and gas royalty trust created under the
laws of the Province of Alberta. This registration statement is filed with the
Commission in  connection  with the listing of the Trust Units on the New York
Stock Exchange, Inc. (the "NYSE"). The Registrant expects trading of its Trust
Units to begin on the facilities of the NYSE on July 28, 2006.

        Pursuant to the Trust's  Amended and Restated  Trust  Indenture  among
Pengrowth  Corporation (the  "Corporation") and Computershare Trust Company of
Canada (the  "Trustee"),  dated July 27, 2004 and amended on June 27, 2006 and
July 27, 2006 (the "Trust Indenture"), the form of which is attached hereto as
Exhibit 3.1, a maximum of  500,000,000  Trust Units and Class A Trust Units of
the Trust  ("Class A Units"),  in the  aggregate,  may be created  and issued.
After giving  effect to the  reorganization  of the Trust's unit  structure on
July  27,  2006  (the  "Reorganization"),  it is  anticipated  there  will  be
160,713,874 Trust Units and 222,095 Class A Units issued and outstanding. Each
Trust Unit and each Class A Unit represents a fractional undivided interest in
the Trust.

        The key  features  of the Trust  Units and the Class A Units,  as they
will be constituted after giving effect to the Reorganization, are as follows:

TRUST UNITS
-----------
    -    have voting  rights at meetings  of  unitholders  of the Trust on the
         basis of one vote for each Trust Unit held in respect of all  matters
         upon which the Trust Indenture requires a unitholder vote;
    -    are not subject to any residency restrictions;
    -    trade  on the  facilities  of both the  NYSE  and the  Toronto  Stock
         Exchange;
    -    are redeemable on demand by the holder thereof; and
    -    have  identical  rights to  voting,  distributions  and assets of the
         Trust upon the winding-up of the Trust as the Class A Units.

CLASS A UNITS
-------------
    -    have voting rights identical to the Trust Units;
    -    may only be held by individuals,  corporations or other entities that
         are not  "non-residents"  of Canada as that  term is  defined  in the
         INCOME TAX ACT (Canada) (the "Tax Act");
    -    may be converted into Trust Units on demand by the holder thereof;
    -    are not traded on the  facilities  of any stock  exchange and are not
         transferable;
    -    are redeemable on demand by the holder thereof;  and
    -    have  identical  rights to  voting,  distributions  and assets of the
         Trust upon the winding-up of the Trust as the Trust Units.


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        The Trust Units and the Class A Units are redeemable by the Trustee at
the request of a holder of Trust  Units or Class A Units,  as the case may be,
when properly  endorsed for transfer and when  accompanied by a duly completed
and properly executed notice requesting redemption at a redemption price equal
to the lesser of: (i) 95  percent of the  average  closing  price of the Trust
Units on the ten days after the Trust  Units or Class A Units are  surrendered
for redemption;  and (ii) the closing price of the Trust Units on the date the
Trust Units or Class A Units are surrendered  for  redemption.  The redemption
right permits  holders of Trust Units or Class A Units,  in the aggregate,  to
redeem  Trust  Units or Class A Units for  maximum  proceeds of $25,000 in any
calendar month,  provided that such limitation may be waived at the discretion
of the board of directors  of the  Corporation.  Redemptions  in excess of the
cash limit must be satisfied by way of a distribution  in specie of a pro rata
share of royalty units and other assets,  excluding  facilities,  pipelines or
other assets associated with oil and natural gas production, which are held by
the Trust at the time the Trust  Units or Class A Shares  are to be  redeemed.
There are no other conversion, redemption or preemption rights attached to the
Trust Units.  The Trust does not have a sinking  fund or any "poison"  pill or
similar provision.

        On behalf of the Trust, the Trustee makes monthly distributions of all
income received by the Trustee in respect of the Trust to the holders of Trust
Units and  Class A Units in  accordance  with the pro rata  share of each such
holder.

        In addition  to the Trust  Units and the Class A Units,  the Trust may
issue the special  voting trust unit,  which  entitles the holder thereof to a
number of votes equal to the number of outstanding  exchangeable shares of the
Corporation at any meeting of the unitholders of the Trust. The special voting
trust unit is not  entitled  to  receive  distributions  from the  Trust.  The
special  voting trust unit is intended to provide voting rights to the holders
of  exchangeable  shares of the  Corporation  equivalent  to the voting rights
attached to the Trust Units.  As of the date hereof,  the special voting trust
unit has not been issued and there are no outstanding  exchangeable  shares of
the Corporation.

        The  Trust   Indenture,   among  other   things,   provides   for  the
establishment  of the Trust,  the issue of Trust Units and Class A Units,  the
permitted investments of the Trust, the procedures respecting distributions to
holders of Trust Units and Class A Units,  the  appointment and removal of the
Trustee,  the Trustee's  authority and  restrictions  thereon,  the calling of
meetings of holders of Trust Units and Class A Units,  the conduct of business
at such meetings,  notice  provisions,  the form of Trust Unit certificate and
Class A Unit certificate and the termination of the Trust.

        The Trust  Indenture may be amended from time to time. Most amendments
to the Trust Indenture,  including the early  termination of the Trust and the
sale or transfer of the property of the Trust as an entirety or  substantially
as an entirety, require approval by an extraordinary resolution of the holders
of Trust Units and Class A Units. An extraordinary  resolution of such holders
requires the approval of not less than 66 2/3 percent of the votes cast by the
holders of Trust Units and Class A Units,  voting  together  as a class,  at a
meeting of such holders held in accordance  with the Trust  Indenture at which
two or more holders of at least five percent of the aggregate  number of Trust
Units and Class A Units  then  outstanding  are  represented.  The  Trustee is
permitted to amend the Trust Indenture  without the consent or approval of the
holders of Trust Units and Class A Units for certain purposes,  including: (i)
ensuring  that  the  Trust  complies  with   applicable   laws  or  government
requirements,  including  satisfaction  of certain  provisions of the Tax Act;


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(ii)  ensuring  that  the  Trust  will  satisfy  the  provisions  of  each  of
subsections  108(2) and 132(6) of the Tax Act; (iii) ensuring that  additional
protection is provided for the interests of holders of Trust Units and Class A
Units as the Trustee may consider  expedient;  (iv)  removing any conflicts or
inconsistencies   between  the  provisions  of  the  Trust  Indenture  or  any
supplemental  indenture  and any  prospectus  filed  with  any  regulatory  or
governmental  body  with  respect  to  the  Trust,  or any  applicable  law or
regulation  of any  jurisdiction,  if, in the opinion of the Trustee,  such an
amendment  will not be  detrimental  to the  interests of the holders of Trust
Units or Class A Units; and (v) making typographical or other  non-substantive
changes that are not adverse to the interests of the Trustee or the holders of
Trust Units or Class A Units. Notwithstanding the foregoing, no such amendment
shall reduce the fractional undivided interest in the Trust represented by any
Trust  Unit or Class A Unit  without  the  consent of the holder of such Trust
Unit or Class A Unit,  as the case may be, and no  amendment  shall reduce the
percentage  of votes  required to be cast at a meeting of the holders of Trust
Units or Class A Units  without the consent of the holders of such Trust Units
or Class A Units, as applicable, then outstanding.

        Unitholders  shall be entitled to pass  resolutions that will bind the
Trustee only with respect to: (i) the removal or  appointment  of the Trustee;
(ii) the  approval  of a change  of  auditors;  (iii)  the  appointment  of an
inspector to investigate  the  performance of the Trustee;  (iv) consenting to
any amendments of the Trust  Indenture;  (v) the approval of  subdivisions  or
consolidations  of Trust  Units or Class A  Units;  (vi) the  approval  of any
resolution  of the  Trustee  to  terminate  the  Trust;  (vii) the sale of the
property of the Trust as an entirety or substantially  as an entirety;  (viii)
authorizing  and directing the Trustee to commence,  defend,  adjust or settle
suits or legal  proceedings in connection  with the Trust and to represent the
Trust in any such suits or legal proceedings  (provided that the Trustee shall
be obliged to comply with such  authority and  requirements  only in the event
that the Trustee has been provided with reasonable security for the payment of
all costs which may be incurred in connection therewith); and (ix) authorizing
and directing the Trustee to subordinate  its rights to receive Royalty Income
(as it is defined in the Trust Indenture) and all other sums and to distribute
Distributable  Cash (as it is defined in the Trust Indenture) in circumstances
where a default  by the  Corporation  has  occurred  in  respect of any of its
obligations to pay any of the  Corporation's  lenders,  including a default in
connection  with any credit facility or in connection with any swap or hedging
agreement,  or to  guarantee  all or any of the  obligations,  liabilities  or
indebtedness  of the Corporation to all or any of the  Corporation's  lenders,
including  without  limitation  in respect  of all or any of the  obligations,
liabilities and  indebtedness of the Corporation to any or all of such lenders
under, pursuant or relating to any credit facility,  swap or hedging agreement
or otherwise, or to any other person or persons.

        Except with respect to the above matters set out above no action taken
by the  unitholders  or resolution of the  unitholders at any meeting shall in
any way bind the Trustee.  Actions taken or  resolutions  passed in respect of
matters described in subsection (i), (iv), (v), (vi),  (vii),  (viii) and (ix)
shall be by Extraordinary Resolution.


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Item 2.  Exhibits.

        The following exhibits have been filed as exhibits to the Registration
Statement, and are hereby incorporated by reference.

EXHIBIT
NUMBER       DESCRIPTION
-------      -------------------------------------------------------
 3.1         Form of Amended and Restated Trust Indenture

 4.1         Form of Trust Unit Certificate.





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                                   SIGNATURE

Pursuant to the requirements of Section 12 of the Securities Exchange Act of
1934, the Registrant has duly caused this registration statement to be signed
on its behalf by the undersigned, thereto duly authorized.

Dated:  July 25, 2006


PENGROWTH ENERGY TRUST


By: /s/ Charles Selby
    ------------------------
    Name:  Charles Selby
    Title: Vice President and Corporate Secretary
           Pengrowth Corporation
           Administrator of Pengrowth Energy Trust





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                               INDEX TO EXHIBITS
                               -----------------



EXHIBIT
NUMBER       DESCRIPTION
-------      -------------------------------------------------------
 3.1         Form of Amended and Restated Trust Indenture

 4.1         Form of Trust Unit Certificate.





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