Exhibit G

                    PROPOSED FORM OF FEDERAL REGISTER NOTICE

SECURITIES AND EXCHANGE COMMISSION

     (Release No. 35-_____)

     Filings under the Public Utility Holding Company Act of 1935,
     as amended ("Act")

     June __, 2003

     Notice is hereby given that the following filing(s) has/have been made with
the Commission pursuant to provisions of the Act and rules promulgated
thereunder. All interested persons are referred to the application(s) and/or
declaration(s) for complete statements of the proposed transaction(s) summarized
below. The application(s) and/or declaration(s) and any amendments thereto
is/are available for public inspection through the Commission's Office of Public
Reference.

     Interested persons wishing to comment or request a hearing on the
application(s) and/or declaration(s) should submit their views in writing by
July __, 2003 to the Secretary, Securities and Exchange Commission, 450 5th
Street, N.W., Washington, D.C. 20549, and serve a copy on the relevant
applicant(s) and/or declarant(s) at the address(es) as specified below. Proof of
service (by affidavit or, in case of an attorney at law, by certificate) should
be filed with the request. Any request for hearing shall identify specifically
the issues of fact or law that are disputed. A person who so requests will be
notified of any hearing, if ordered, and will receive a copy of any notice or
order issued in the matter. After July __, 2003, the application(s) and/or
declaration(s), as filed or as amended, may be granted and/or permitted to
become effective.


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AMEREN CORPORATION         (70-[___])
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     Ameren Corporation, a registered holding company (the "Applicant"), whose
principal business address is at 1901 Chouteau Avenue, St. Louis, Missouri
63103, has filed an application or declaration pursuant to Sections 9(a)(1), 10
and 12(f) of the Act and Rules 43 and 54 thereunder in which it is seeking
authorization to acquire, directly or indirectly through one or more
subsidiaries (including a new subsidiary formed exclusively for such purpose), a
membership interest in PowerTree Carbon Company, LLC (the "Company"), a Delaware
limited liability company formed to facilitate investments by the Applicant and
other energy companies in forestation projects in the Lower Mississippi River
Valley, and possibly other sites, as a means for removing carbon dioxide (CO2)
from the atmosphere.

     The Applicant directly or indirectly owns all of the outstanding common
stock of Union Electric Company d/b/a AmerenUE ("AmerenUE"), Central Illinois
Public Service Company d/b/a AmerenCIPS ("AmerenCIPS"), and Central Illinois
Light Company, d/b/a AmerenCILCO ("AmerenCILCO," and together with AmerenUE and
AmerenCIPS, the "Utility Subsidiaries"). Together, the Utility Subsidiaries





provide retail and wholesale electric service to approximately 1.7 million
customers and retail natural gas service to approximately 500,000 customers in
parts of Missouri and Illinois. The Utility Subsidiaries and other non-regulated
generating subsidiaries of the Applicant own all or portions of electric
generating plants in the United States having a combined generating capability
of approximately 14,500 megawatts (MW).

     The Applicant states that the Company has been formed under the sponsorship
of the electric utility sector in cooperation with the Department of Energy
("DOE"). The Company is part of an industry-wide effort to voluntarily address
climate change through measures designed to reduce greenhouse gas emissions in
response to President Bush's recent "Climate VISION" plan, or Climate, Voluntary
Innovative Sector Initiatives: Opportunities Now. Climate VISION is the first
step in the President's policy of encouraging industry to produce voluntary cuts
in greenhouse gas emissions. One proven means for reducing greenhouse gases is
to use trees to remove CO2 from the atmosphere and store it in tree biomass and
roots and soil. The Bush Administration has also proposed, as part of its Global
Climate Change program, the creation of transferable credits for measures which
reduce greenhouse gas emissions.

     The Applicant further states that the Company has obtained commitments
totaling approximately $3.5 million from approximately 25 electric utilities,
electric utility holding companies (including ten other registered holding
companies) and other energy concerns that will be used to fund six forestation
projects located in Louisiana, Mississippi and Arkansas. These projects will
provide multiple environmental benefits, including removing from the atmosphere
and storing over 2 million tons of CO2 over the projects' 100-year lifetimes.
Other benefits will include: restoring habitat for birds and animals; reducing
fertilizer inputs to waters; and stabilizing soils. Two of the projects will
involve purchase and donation of land to the U.S. Fish & Wildlife Service, while
other projects will involve obtaining easements for tree planting on private
land. The contributions of the members to the Company will be utilized for land
acquisition and to pay the cost of planting tree seedlings. It is estimated that
these projects will provide carbon benefits of more than 400 and 450 tons of CO2
per acre by years 70 and 100, respectively, at a cost of less that $2.00 per
ton. The Applicant's contribution commitment to the Company is $100,000.

     To the extent not exempt under Rule 43, the Applicant is also requesting
authorization pursuant to Section 12(f) of the Act to sell its membership
interest in the Company at any time to any of its associate companies. Any sale
by the Applicant of its membership interest in the Company to an associate
company shall be for an amount equal to the Applicant's investment or pro rata
share thereof in the case of a sale of a portion of the Applicant's membership
interest. No sale to an associate company that requires approval by any other
regulatory commission shall take place until such approval has been obtained.

     The Applicant states that under the terms of the Company's Operating
Agreement, each member (or its designee(s) or transferee(s)) shall be entitled
to claim a pro rata share of all carbon that is determined to be sequestered by
the Company's efforts to which legal rights, if any, have been obtained ("Carbon
Reductions") based on the member's percentage interest in the Company. A member
may generally utilize such member's share of any Carbon Reductions in connection


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with its participation in any greenhouse gas reporting or regulatory program or
transfer or assign such Carbon Reductions to one or more other persons.

     The Applicant states that no state commission, and no federal commission,
other than this Commission, has jurisdiction over the proposed transaction.


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