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                                                                      EXHIBIT 23

                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the incorporation by reference in the Registration
Statement on Form S-3 (No. 33-43721) and the Registration Statements on Form S-8
(No. 333-43737 and No. 333-50793) of Ameren Corporation of our report dated
February 5, 2001 relating to the financial statements, which appears in the
Annual Report to Shareholders, which is incorporated in this Annual Report on
Form 10-K. We also consent to the incorporation by reference of our report dated
February 5, 2001 relating to the financial statement schedule, which appears in
this Form 10-K.


/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP
St. Louis, Missouri
March 30, 2001