EXHIBIT 3.3


                                    BYLAWS
                                      OF
                       AMEREN ENERGY GENERATING COMPANY

                                   ARTICLE I

                             SHARES AND TRANSFERS

     Section 1.  Each holder of duly paid shares of the Company shall be
entitled to a certificate or certificates stating the number and class of shares
owned by such holder. Such certificates shall be signed by the appropriate
officers of the Company (which, in the absence of contrary action by the Board,
shall be the President or any Vice President and the Secretary or any Assistant
Secretary of the Company); shall be sealed with the corporate seal of the
Company, which seal may be facsimile; and shall be countersigned by a Transfer
Agent, and countersigned and registered by a Registrar, appointed by the Board.
If a certificate is countersigned by a Transfer Agent and countersigned and
registered by a Registrar, other (in each case) than the Company itself or its
employee, the signature of either or both of such officers of the Company, and
the countersignature of any such Transfer Agent or its officer or employee, may
be facsimiles. In case any officer of the Company, or any officer or employee of
a Transfer Agent, who has signed or whose facsimile signature has been placed
upon any such certificate shall cease to be an officer of the Company or an
officer or an employee of the Transfer Agent, as the case may be, before such
certificate is issued, the certificate may be issued by the Company with the
same effect as if such officer of the Company or such officer or employee of the
Transfer Agent had not ceased to be such at the date of issue of such
certificate.

     Section 2.  Shares shall be transferable only on the books of the Company
and upon proper endorsement and surrender of the outstanding certificate or
certificates representing such shares. If an outstanding certificate shall be
lost, destroyed or stolen, the holder thereof may have a new certificate upon
producing evidence satisfactory to the Company of such loss, destruction or
theft and upon furnishing to the Company, the Transfer Agent and the Registrar
indemnity deemed sufficient by the Company.

     Section 3.  Notwithstanding the foregoing provisions of this Article I, the
Board of Directors may also provide by resolution that some or all of any or all
classes and series of its shares shall be uncertificated shares, provided that
such resolution shall not apply to shares represented by a certificate until
such certificate is surrendered to the Company. Except as otherwise provided by
statute, the rights and obligations of the holders of uncertificated shares and
the rights and obligations of the holders of certificates representing shares of
the same class and series shall be identical.

                                  ARTICLE II
                           MEETINGS OF SHAREHOLDERS

     Section 1. The annual meeting of the shareholders shall be held on the
fourth Tuesday in May of each year (or if such day shall be a legal holiday,
then upon the next succeeding day not a legal holiday) or upon such other day
determined by resolution of the Board of Directors. Each


such regular annual meeting shall be held at such time and at such location,
within or without the State of Illinois, as the Board of Directors shall order.
At such annual meeting, a board of directors shall be elected and such other
business shall be transacted as may properly come before such meeting.

     Section 2.  Special meetings of the shareholders may be called by the
President, by the Board of Directors, by the holders of not less than one-fifth
of all the outstanding shares entitled to vote on the matter for which the
meeting is called, or in such other manner as may be provided by statute.  Each
such special meeting shall be held at such location, within or without the State
of Illinois, as the Board of Directors shall order.

     Section 3.  Written notice of the place, day and hour of each meeting of
shareholders and, in the case of a special meeting, the purpose or purposes for
which the meeting is called, shall be given to each shareholder of record
entitled to vote at such meeting.  Such notice shall be sent by mail to each
such shareholder, at the address of such shareholder as it appears on the
records of the Company, not less than ten days or more than sixty days before
the date of the meeting, except in cases where some other special method of
notice may be required by statute, in which case the statutory method shall be
followed.  Notice of any meeting of the shareholders may be waived by any
shareholder. Attendance of a shareholder (either in person or by proxy) at any
meeting shall constitute waiver of notice thereof unless the shareholder (in
person or by proxy, as the case may be) at the meeting objects to the holding of
the meeting because proper notice was not given.

     Section 4.  At any shareholders' meeting a majority of the shares
outstanding and entitled to vote on the matter (excluding such shares as may be
owned by the Company) must be represented (either in person or by proxy) in
order to constitute a quorum for consideration of such matter, but the
shareholders represented at any meeting, though less than a quorum, may adjourn
the meeting to some other day or sine die. If a quorum is present (either in
person or by proxy) at a shareholders' meeting, the affirmative vote of the
holders of the majority of shares represented at the meeting and entitled to
vote on a matter shall be the act of the shareholders, unless the vote of a
greater number or voting by classes shall be required by law or the Articles of
Incorporation.

     Section 5.  The President and Secretary of the Company shall act as
Chairman and Secretary, respectively, of each shareholders' meeting, unless the
shareholders represented at the meeting shall otherwise decide.

                                  ARTICLE III
                              BOARD OF DIRECTORS

     Section 1.  The business and affairs of the Company shall be managed by or
under the direction of the Board of Directors consisting of a minimum of one or
not more than five members.  The exact number of directors within the minimum
and maximum limitations specified in the preceding sentence shall be fixed from
time to time by the Board of Directors pursuant to a resolution adopted by a
majority of the entire Board of Directors.  The Board of Directors shall be
elected at each annual meeting of the shareholders, but, if for any reason the
election shall not be held at an annual meeting, it may be subsequently held at
any special

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meeting of the shareholders after proper notice. Directors so elected shall hold
office until the next succeeding annual meeting of shareholders or until their
respective successors, willing to serve, shall have been elected and qualified.
Any vacancy occurring in the Board of Directors arising between meetings of
shareholders by reason of an increase in the number of directors or otherwise
may be filled by a majority of the members of the Board.

     Section 2.  A meeting of the Board of Directors shall be held on the same
date as the annual meeting of shareholders in each year, at the same place where
such annual meeting shall have been held or at such other place as shall be
determined by the Board. Regular meetings of the Board shall be held in such
place, within or without the State of Illinois, and on such dates each year as
shall be established from time to time by the Board. Notice of every such
regular meeting of the Board, stating the place, day and hour of the meeting,
shall be given to each director personally, or by telegraph or other written
means of electronic communication, or by depositing the same in the mails
properly addressed, at least two days before the date of such meeting. Except
where required by statute, neither the business to be transacted at, nor the
purpose of, any regular or special meeting of the Board need be specified in the
notice or waiver of notice of such meeting.

     Section 3.  Special meetings of the Board of Directors may be called at any
time by the President, or by a Vice President, when acting as President, or by
any two directors.  Notice of such meeting, stating the place, day and hour of
the meeting shall be given to each director personally in writing, or by
telegraph or other written means of electronic communication, or by depositing
the same in the mails properly addressed, or orally promptly confirmed by
written notice in any one of the aforesaid forms, not less than the day prior to
the date of such meeting.

     Section 4.  Notice of any meeting of the Board may be waived by any
director. Attendance of a director at any meeting shall constitute waiver of
notice of such meeting except where a director attends a meeting for the express
purpose of objecting to the transaction of any business at the meeting because
the meeting is not lawfully called or convened.

     Section 5.  A majority of the Board of Directors shall constitute a quorum
for the transaction of business at any meeting of the Board, but less than a
majority of the Board may adjourn the meeting to some other day or sine die. The
act of the majority of the directors present at a meeting at which a quorum is
present shall be the act of the Board unless the vote of a greater number or the
vote of any class of directors shall be required by the Articles of
Incorporation. The President of the Company shall act as Chairman at each
meeting of the Board but, in the President's absence, one of the directors
present at the meeting who shall have been elected for the purpose by majority
vote of those directors in attendance shall act as Chairman; and the Secretary
of the Company, or in the Secretary's stead, an Assistant Secretary shall act as
Secretary at each such meeting. The members of the Board shall receive such
compensation as the Board may from time to time by resolution determine.

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                                  ARTICLE IV
                     COMMITTEES OF THE BOARD OF DIRECTORS

     Section 1.  A majority of directors may appoint committees, standing or
special, from time to time from among members of the Board, and confer powers on
such committees and revoke such powers and terminate the existence of such
committees at its pleasure.

     Section 2.  Meetings of any committee may be called in such manner and may
be held at such times and places as such committee may by resolution determine,
provided that a meeting of any committee may be called at any time by the
President of the Company. Members of all committees shall receive such
compensation as the Board of Directors may from time to time by resolution
determine.

     Section 3.  Each committee shall have such authority of the Board of
Directors as shall be granted to it by the Board; provided, however, a committee
may not take any action not permitted to be taken by a committee pursuant to the
Illinois Business Corporation Act, as amended from time to time.

                                   ARTICLE V
                                   OFFICERS

     Section 1.  There shall be elected by the Board of Directors (if
practicable at its first meeting after the annual election of directors in each
year) the following principal officers, namely: A President, such number of Vice
Presidents as the Board may from time to time decide upon (any one or more of
whom may be designated as Executive Vice President, Senior Vice President or
otherwise), a Secretary and a Treasurer. References in these Bylaws to Vice
Presidents shall include any such Executive Vice President, Senior Vice
President or other Vice President, however denominated. The Board may in its
discretion also elect such other officers as may from time to time be provided
for by the Board. Any two or more offices may be held by the same person. All
officers, unless sooner removed, shall hold their respective offices until the
first meeting of the Board of Directors after the next succeeding annual
election of directors and until their successors, willing to serve, shall have
been elected, but any officer, including any officer appointed by the President
as provided in Section 2 of this Article V, may be removed from office at the
pleasure of the Board. Election or appointment of an officer shall not of itself
create contract rights.

     Section 2.  The President shall be the chief executive officer of the
Company and shall have the general management and direction, subject to the
control of the Board of Directors, of the business of the Company, including the
power to appoint and to remove and discharge any and all assistant officers,
agents and employees of the Company not elected or appointed directly by the
Board of Directors. The President may execute for and on behalf of the Company
any contracts, deeds, mortgages, leases, bonds, or other instruments and may
accomplish such execution either under or without the seal of the Company and
either individually or with the Secretary, any Assistant Secretary, or any other
officer or person thereunto authorized by the Board of Directors, according to
the requirements of the form of the instrument. The President shall have such
other powers and duties as usually devolve upon the president of a corporation,
and such further powers and duties as may from time to time be prescribed by the
Board of

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Directors. The President may delegate any part of the duties of that office to
one or more of the Vice Presidents of the Company.

     Section 3.  Each of the Vice Presidents shall have such powers and duties
as may be prescribed for such office by the Board of Directors or as may be
prescribed for or delegated to such officer by the President. Each Vice
President may execute for and on behalf of the Company any contracts, deeds,
mortgages, leases, bonds, or other instruments in each case in accordance with
the authority therefor granted by the President or the Board of Directors, which
authority may be general or confined to specific instances. Such execution may
be accomplished either individually or with any other officer or person
thereunto authorized by the President or the Board of Directors, according to
the requirements of the form of the instrument. In the absence or inability of
the President or in case of the President's death, resignation or removal from
office, the powers and duties of the President shall temporarily devolve upon
such one of the Vice Presidents as the Board shall have designated or shall
designate for the purpose and the Vice President so designated shall have and
exercise all the powers and duties of the President during such absence or
disability or until the vacancy in the office of President shall be filled. Each
Vice President may delegate any part of the duties of that office to employees
of the Company under such Vice President's supervision.

     Section 4.  The Secretary shall attend all meetings of the Board of
Directors, shall keep a true and faithful record thereof in proper books to be
provided for that purpose, and shall have the custody and care of the corporate
seal, records, minutes and stock books of the Company. The Secretary shall also
act as Secretary of all shareholders' meetings, and keep a record thereof,
except to the extent some other person may have been selected to act as
Secretary by such meeting. The Secretary shall keep a suitable record of the
addresses of shareholders, shall have general charge of the stock transfer books
of the Company, and shall, except as may be otherwise required by statute or by
the Bylaws, sign, issue and publish all notices required for meetings of
shareholders and for meetings of the Board of Directors. The Secretary shall
sign all share certificates, bonds and mortgages, and all other documents and
papers to which the Secretary's signature may be necessary or appropriate, shall
affix the seal, and shall have such other powers and duties as are commonly
incidental to the office of Secretary or as may be prescribed for or delegated
to that office by the Board of Directors, by the President, or, if authorized by
the Board or the President to prescribe such powers and duties, by a Vice
President. The Secretary may delegate any part of the duties of that office to
employees of the Company under the Secretary's supervision.

     Section 5.  The Treasurer shall have charge of, and be responsible for, the
collection, receipt, custody and disbursement of the funds of the Company, and
the deposit of its funds in the name of the Company in such banks, trust
companies or safety vaults as the Board of Directors may direct which direction
may be general or confined to specific depositories.  The Treasurer shall have
custody of such books, receipted vouchers and other papers and records as in the
practical business operations of the Company shall naturally belong in the
office or custody of the Treasurer or as shall be placed in the custody of the
Treasurer by the Board of Directors, by the President, or, if authorized by the
Board or the President, by a Vice President.  The Treasurer shall have such
other powers and duties as are commonly incidental to the office of Treasurer or
as may be prescribed for or delegated to that office by the Board of Directors,
by the President, or, if authorized by the Board or the President to prescribe
such powers and duties,

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by a Vice President. The Treasurer may be required to give a bond to the Company
for the faithful discharge of the Treasurer's duties, in such form and in such
amount and with such sureties as shall be determined by the Board of Directors.
The Treasurer may delegate any part of the Treasurer's duties to employees of
the Company under the Treasurer's supervision.

     Section 6.  The Assistant Vice Presidents, Assistant Secretaries and
Assistant Treasurers shall, respectively, assist the Vice Presidents, the
Secretary and the Treasurer of the Company in the performance of the respective
duties assigned to such principal officers and, in assisting the respective
principal officer, each assistant officer shall, for such purposes, have the
same powers as the respective principal officer. The powers and duties of any
principal officer shall, except as otherwise ordered by the Board of Directors,
temporarily devolve upon the respective assistant in case of the absence,
disability, death, resignation or removal from office of such principal officer.

                                  ARTICLE VI
                                 MISCELLANEOUS

     Section 1.  The funds of the Company shall be deposited to its credit in
such banks or trust companies, as the Board of Directors from time to time shall
approve, which approval may be general or confined to specific instances. Such
funds shall be withdrawn only on checks or drafts of the Company or by direct,
wire or other electronic transfer of funds for the purposes of the Company in
accordance with procedures relating to signatures and authorizations by officers
of the Company which are approved by the Board of Directors from time to time,
which approval may be general or confined to specific instances.

     Section 2.  No loans shall be contracted on behalf of the Company and no
evidences of indebtedness shall be issued in its name except for current
expenses unless authorized by the Board of Directors.  Such authority may be
general or confined to specific instances.

     Section 3.  The Board of Directors may authorize any officer or officers,
agent or agents to enter into any contract or execute and deliver any instrument
in the name of and on behalf of the Company, and such authority may be general
or confined to specific instances.

     Section 4.  All distributions to shareholders and all acquisitions by the
Company of its own shares shall be authorized by the Board of Directors.

     Section 5.  The fiscal year of the Company shall close at the end of
December annually.

     Section 6.  All or any shares of stock of any corporation owned by the
Company may be voted at any meeting of the shareholders of such corporation by
the President, any Vice President or the Secretary of the Company upon any
question that may be presented at such meeting, and any such officer may, on
behalf of the Company, waive any notice of the calling of such meeting required
by any statute or Bylaw and consent to the holding of any such meeting without
notice. The President, any Vice President or the Secretary of the Company shall
have authority to give to any person a written proxy in the name of the Company
and under its corporate seal to vote at any meeting of the shareholders of any
corporation all or any shares of stock of such corporation owned by the Company
upon any question that may be presented at such meeting, with full

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power to waive any notice of the calling of such meeting required by any statute
or Bylaw and to consent to the holding of any such meeting without notice.

     Section 7.  (a)  The Company shall indemnify any person who was or is a
party, or is threatened to be made a party to, any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the Company) by reason
of the fact that such person is or was a director, officer, employee or agent of
the Company, or who is or was serving at the request of the Company as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise, against expenses (including attorneys'
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by such person in connection with such action, suit or proceeding, if
such person acted in good faith and in a manner such person reasonably believed
to be in, or not opposed to, the best interests of the Company and, with respect
to any criminal action or proceeding, if such person had no reasonable cause to
believe such person's conduct was unlawful. The termination of any action, suit
or proceeding by judgment, order, settlement, conviction, or upon a plea of nolo
contendere or its equivalent, shall not, of itself, create a presumption that
the person did not act in good faith and in a manner which such person
reasonably believed to be in or not opposed to the best interests of the Company
and, with respect to any criminal action or proceeding, that the person had
reasonable cause to believe that such person's conduct was unlawful.

     (b) The Company shall indemnify any person who was or is a party, or is
threatened to be made a party to, any threatened, pending or completed action or
suit by or in the right of the Company to procure a judgment in its favor by
reason of the fact that such person is or was a director, officer, employee or
agent of the Company, or is or was serving at the request of the Company as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise, against expenses (including attorneys' fees)
actually and reasonably incurred by such person in connection with the defense
or settlement of such action or suit, if such person being indemnified acted in
good faith and in a manner such person reasonably believed to be in, or not
opposed to, the best interests of the Company, provided that no indemnification
shall be made with respect to any claim, issue, or matter as to which such
person has been adjudged to have been liable to the Company, unless, and only to
the extent that, the court in which such action or suit was brought shall
determine upon application that, despite the adjudication of liability, but in
view of all the circumstances of the case, such person is fairly and reasonably
entitled to indemnity for such expenses as the court shall deem proper.

     (c) To the extent that a director, officer, employee or agent has been
successful, on the merits or otherwise, in the defense of any action, suit or
proceeding referred to in paragraph (a) or (b), or in defense of any claim,
issue or matter therein, such person shall be indemnified against expenses
(including attorneys' fees) actually and reasonably incurred by such person in
connection therewith.

     (d) Any indemnification under paragraph (a) or (b) (unless ordered by a
court) shall be made by the Company only as authorized in the specific case,
upon a determination that indemnification of the director, officer, employee or
agent is proper in the circumstances because such person has met the applicable
standard of conduct set forth in paragraph (a) or (b). Such determination shall
be made (1) by the Board of Directors by a majority vote of a quorum

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consisting of directors who were not parties to such action, suit or proceeding,
or (2) if such a quorum is not obtainable, or, even if obtainable, if a quorum
of disinterested directors so directs, by independent legal counsel in a written
opinion, or (3) by the shareholders of the Company.

     (e) Expenses incurred in defending a civil or criminal action, suit or
proceeding may be paid by the Company in advance of the final disposition of
such action, suit or proceeding, upon receipt of an undertaking by or on behalf
of the director, officer, employee or agent to repay such amount if it shall
ultimately be determined that such person is not entitled to be indemnified by
the Company as authorized in this Section 7.

     (f) The indemnification and advancement of expenses provided by or granted
under the other subsections of this Section 7 shall be effective with respect to
acts, errors or omissions occurring prior to, on or subsequent to the date of
adoption hereof and such indemnification shall not be deemed exclusive of any
other rights to which those seeking indemnification or advancement of expenses
may be entitled under any Bylaw, agreement, vote of shareholders or
disinterested directors, or otherwise, both as to action by a director, officer,
employee or agent in such person's official capacity and as to action in another
capacity while holding such office.

     (g) The Company may purchase and maintain insurance on behalf of any person
who is or was a director, officer, employee or agent of the Company, or who is
or was serving at the request of the Company as a director, officer, employee or
agent of another corporation, partnership, joint venture, trust or other
enterprise, against any liability asserted against such person and incurred by
such person in any such capacity, or arising out of such person's status as
such, whether or not the Company would have the power to indemnify such person
against such liability under the provisions of this Section 7.

     (h) If the Company has paid indemnity or has advanced expenses to a
director, officer, employee or agent, the Company shall report the
indemnification or advance in writing to the shareholders with or before the
notice of the next shareholders' meeting.

     (i) For purposes of this Section 7 references to "the Company" shall
include, in addition to the surviving corporation, any merging corporation
(including any corporation having merged with a merging corporation) absorbed in
a merger which, if its separate existence had continued, would have had the
power and authority to indemnify its directors, officers, and employees or
agents, so that any person who was a director, officer, employee or agent of
such merging corporation, or was serving at the request of such merging
corporation as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise, shall stand in the same
position under the provisions of this Section 7 with respect to the surviving
corporation as such person would have with respect to such merging corporation
if its separate existence had continued.

     (j) For purposes of this Section 7, references to "other enterprise" shall
include employee benefit plans, and references to "serving at the request of the
Company" shall include any service as a director, officer, employee or agent of
the Company which imposes duties on, or involves services by such director,
officer, employee, or agent with respect to an employee benefit plan, its
participants, or beneficiaries.  A person who acted in good faith and in a
manner such person reasonably believed to be in the best interests of the
participants and beneficiaries of

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an employee benefit plan shall be deemed to have acted in a manner "not opposed
to the best interests of the Company" as referred to in this Section 7.

     (k) The indemnification and advancement of expenses provided by or granted
under this Section 7 shall, unless otherwise provided when authorized or
ratified, continue as to a person who has ceased to be a director, officer,
employee, or agent and shall inure to the benefit of the heirs, executors, and
administrators of that person.

                                  ARTICLE VII
                         AMENDMENT OR REPEAL OF BYLAWS

     These Bylaws may be added to, amended or repealed by the Board of Directors
at any regular or special meeting of the Board.

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STATE OF MISSOURI            )
                             )    SS.
CITY OF ST. LOUIS            )

          I, the undersigned, hereby certify that I am Assistant Secretary of
Ameren Energy Generating Company, an Illinois Corporation, and the Custodian of
the books and records of said Company.

          I further certify that the above and foregoing is a true copy of the
Bylaws of said Company in effect on this 2nd day of March, 2000.

          IN WITNESS WHEREOF, I have hereunto set my hand and affixed the
corporate seal of said Company on this 2nd day of March, 2000.



                                                       /s/ Ronald K. Evans
                                                 ------------------------------
                                                       Assistant Secretary

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