Ameren Illinois Co v. Illinois Commerce Commission

── Ameren Illinois Co v. Illinois Commerce Commission ── Court: Appellate Court of Illinois Date: May 26, 2026 Category: General 2026 IL App (5th) 240164-U NOTICE NOTICE Decision filed 05/26/26. This order was filed The text of this decision NOS. 5-24-0164, 5-24-0165, 5-24-0853, 5-24-0968, 5-25-0172 cons. under Supreme Court may be changed or Rule 23 and is not corrected prior to the IN THE precedent except in the filing of a Petition for limited circumstances Rehearing or the allowed under Rule disposition of the same. APPELLATE COURT OF ILLINOIS 23(e)(1). FIFTH DISTRICT ______________________________________________________________________________ AMEREN ILLINOIS COMPANY d/b/a Ameren Illinois, ) Appeal from the ) Illinois Commerce Petitioner-Appellant, ) Commission ) v. ) ICC Docket Nos. 22-0487, ) 23-0082, and 24-0238 (cons.) ILLINOIS COMMERCE COMMISSION; THE ) CITIZENS UTILITY BOARD; ENVIRONMENTAL ) LAW & POLICY CENTER; VOTE SOLAR; SUNRUN, ) INC.; SOLAR ENERGY INDUSTRIES ASSOCIATION; ) COALITION FOR COMMUNITY SOLAR ACCESS; ) ILLINOIS SOLAR ENERGY ASSOCIATION; UNION ) OF CONCERNED SCIENTISTS; ILLINOIS ) INDUSTRIAL ENERGY CONSUMERS; NATURAL ) RESOURCES DEFENSE COUNSEL; ) ENVIRONMENTAL DEFENSE FUND; WALMART; ) INC.; FEDERAL EXECUTIVE AGENCIES; UNITED ) CONGREGATIONS OF METRO-EAST; AARP; ) PRAIRIE RIVERS NETWORK; ILLINOIS POWER ) AGENCY; THE PEOPLE OF THE STATE OF ) ILLINOIS AND COMMUNITY ORGANIZING AND ) FAMILY ISSUES, ) ) Respondents-Appellees. ) ______________________________________________________________________________ JUSTICE VAUGHAN delivered the judgment of the court. Justices Barberis and Boie concurred in the judgment. ORDER ¶1 Held: The Illinois Commerce Commission’s orders reducing Ameren’s storm hardening investment in its refiled Grid Plan, disallowing Ameren’s request to include the Other Post-Employment Benefits asset in its rate base and setting Ameren’s rate on equity are affirmed where substantial evidence supported the orders. 1 ¶2 Petitioner, Ameren Illinois Company d/b/a Ameren Illinois (Ameren) seeks review of the Illinois Commerce Commission’s (Commission) decisions in three consolidated Commission appeals. Ameren contends that the Commission’s orders that reduced Ameren’s proposed budget for subtransmission line hardening program, rejected Ameren’s request to include the other post- employment benefits asset (OPEB) in its rate base, and setting Ameren’s rate on equity were erroneous. For the following reasons, we affirm. ¶3