Company: AILIM
Filing Date: 2025-11-06
Form Type: 10-Q
Source: 0001002910-25-000129
Chunk: 137

Company: Ameren Illinois Co
Filing Date: 2025-11-06
Form: 10-Q
Item: Part I, Item 1
Chunk 137
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 respectively. See Note 2 – Rate and Regulatory Matters under Part I, Item 1, of this report for additional information regarding the April 2025 MoPSC electric rate order.

•The effect of weather increased revenues an estimated $37 million and $48 million, respectively, primarily due to warmer July temperatures and colder winter temperatures.

•Revenues increased $11 million and $35 million, respectively, due to surcharges related to the servicing of securitized utility tariff bonds issued in December 2024 to finance costs related to the accelerated retirement of the Rush Island Energy Center. This increase in revenue is offset by increases in interest and amortization expense. See Variable Interest Entities in Note 1 – Summary of Significant Accounting Policies under Part I, Item 1, of this report for additional information.

•Excluding the estimated effects of weather and the MEEIA customer energy-efficiency programs, electric revenues increased an estimated $23 million in both periods, primarily due to increased retail sales volumes and higher demand charges, partially offset by lower realized prices due to changes in customer usage patterns.

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The following items decreased Ameren Missouri’s electric revenues for the three and nine months ended September 30, 2025 (except where a specific period is referenced):

•In accordance with the June 2024 MoPSC financing order, revenues decreased $26 million for the nine months ended September 30, 2025, due to the deferral of base rate revenues to a regulatory liability related to the Rush Island Energy Center since its October 15, 2024 retirement date. The deferral ended with new rates effective June 1, 2025.

•Revenues associated with “Cost recovery mechanisms – offset in fuel and purchased power” decreased $19 million for the nine months ended September 30, 2025, due to decreased revenue related to the amortization of costs previously deferred under the FAC that were reflected in customer rates. The changes to “Cost recovery mechanisms - offset in fuel and purchased power” are fully offset by changes to “Cost recovery mechanisms - offset in electric revenue” in fuel and purchased power.

•RESRAM revenues decreased $10 million and $17 million, respectively. These changes are largely offset by changes in the “Depreciation and amortization” section of the statement of income.

Ameren Illinois

Ameren Illinois’ electric revenues increased $157 million, or 23%, and $304 million, or 16