Exhibit 23 Consent of Independent Accountants ---------------------------------- We hereby consent to the incorporation by reference in the Prospectus constituting part of the Registration Statement on Form S-3 (No. 33-59674, No. 33-45506, No. 33-56063 and No. 333-18473) of Central Illinois Public Service Company of our report dated February 4, 1999 appearing on Page 18 of this Form 10-K. /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP St. Louis, Missouri March 30, 1999