JEFFERSON CITY, Mo.---The Missouri Public Service Commission (PSC) set an intervention deadline of December 17, 2025, for a case filed by the Union Electric Company d/b/a Ameren Missouri to adjust the rate of its Missouri Energy Efficiency Investment Act (MEEIA) Energy Efficiency Investment Charge (EEIC).

On December 1, 2025, Ameren Missouri filed a tariff sheet, with supporting testimony, to decrease the EEIC by 27 cents a month for the average residential customer. The EEIC is a charge that encourages utility companies to implement demand-side and energy efficiency programs, and is part of MEEIA. The mechanism is reflected as a separate line item on customer bills.

Applications to intervene and participate should be filed with the Secretary of the Missouri Public Service Commission, P.O. Box 360, Jefferson City, Mo. 65102-0360, or by using the Commission’s Electronic Filing and Information System (EFIS) at psc.mo.gov.

Individual citizens wishing to comment may click the link below, or contact either the Office of the Public Counsel (Governor Office Building, 200 Madison Street, Suite 650, P.O. Box 2230, Jefferson City, Mo. 65102-2230, telephone 866-922-2959, email mopco@opc.mo.gov) or the Public Service Commission Staff (P.O. Box 360, Jefferson City, Mo. 65102, telephone 800-392-4211, email pscinfo@psc.mo.gov). The Office of the Public Counsel is a separate state agency that represents the general public in matters before the Commission.

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Case No. ER-2026-0140

• ER-2026-0140