Exhibit 23.1


                       CONSENT OF INDEPENDENT ACCOUNTANTS
                       ----------------------------------


We  hereby  consent  to the  incorporation  by  reference  in  the  Registration
Statements  on Form S-3 (Nos.  333-39400,  333-81774,  333-89970,  333-89970-01,
333-89970-02  and 333-11283) and the  Registration  Statements on Form S-8 (Nos.
333-43737,   333-50793,   333-72156,   333-103818  and   333-101506)  of  Ameren
Corporation  of our reports  dated  February 12, 2004  relating to the financial
statements and financial statement schedule, which appears in this Form 10-K.


/s/ PricewaterhouseCoopers LLP
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    PricewaterhouseCoopers LLP


St. Louis, Missouri
March 9, 2004