Ameren Missouri Fuel Adjustment Request Intervention Deadline

MO PSC Latest News

Published April 6th, 2026

Detected April 7th, 2026

Summary

The Missouri Public Service Commission set an intervention deadline of April 16, 2026, for parties wishing to participate in Ameren Missouri's Fuel and Purchased Power Adjustment Clause proceedings. Ameren Missouri filed direct testimony and a revised tariff sheet on April 1, 2026, proposing an updated fuel adjustment rate with a requested effective date of June 1, 2026.

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What changed

The Missouri Public Service Commission announced an intervention deadline of April 16, 2026, for Case No. ER-2026-0257 and EO-2026-0258. Ameren Missouri (Union Electric Company) submitted direct testimony and a revised tariff sheet under its Fuel and Purchased Power Adjustment Clause requesting the new rate take effect June 1, 2026. The Commission provided filing instructions and contact information for the Office of Public Counsel and PSC staff.

Parties wishing to intervene in these proceedings must file applications by April 16, 2026, with the PSC Secretary via mail or the Commission's Electronic Filing and Information System. Individual citizens may submit comments through the Public Comment portal, by contacting the Office of Public Counsel, or by reaching PSC staff directly. This is a procedural notice establishing participation timelines; no substantive rate determination has been made.

Source document (simplified)

Press Release

FOR IMMEDIATE RELEASE -- April 6, 2026
Contact: Sarah Fontaine (573) 751-9300
PR-26-61

PSC Sets Intervention Deadline for Ameren Missouri
Fuel and Purchased Power Adjustment Clause Request

JEFFERSON CITY, Mo.--- The Missouri Public Service Commission (PSC) set an intervention deadline of April 16, 2026, for cases filed by Union Electric Company, doing business as Ameren Missouri, requesting an adjustment under its Fuel and Purchased Power Adjustment Clause (FAC).

On April 1, Ameren Missouri submitted direct testimony and a revised tariff sheet proposing an updated fuel adjustment rate. The Company has requested that the tariff go into effect on June 1, 2026.

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

Individual citizens who would like to comment can do so by clicking the links at the bottom of this press release or by contacting the Office of the Public Counsel (Governor Office Building, 200 Madison Street, Suite 650, P.O. Box 2230, Jefferson City, Mo. 65102-2230, telephone number 866-922-2959, email mpco@opc.mo.gov). The Office of the Public Counsel is a separate state agency from the Missouri Public Service Commission and represents the general public in matters before the Commission.

Individuals can also comment by contacting Missouri Public Service Commission staff (P.O. Box 360, Jefferson City, Mo. 65102, telephone number 800-392-4211, email pscinfo@psc.mo.gov).