Company: AILIM
Filing Date: 2025-08-04
Form Type: 10-Q
Source: 0001002910-25-000112
Chunk: 134

Company: Ameren Illinois Co
Filing Date: 2025-08-04
Form: 10-Q
Item: Part I, Item 1
Chunk 134
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 revenues increased $451 million, or 52%, and $630 million, or 40%, for the three and six months ended June 30, 2025, respectively, compared with the year-ago periods.

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

•“Off-system sales, capacity, transmission, and FAC revenues, net” increased $435 million and $599 million, respectively, primarily due to higher spring and summer capacity prices, which were set by annual MISO auctions. See Outlook for additional information related to the April 2024 and April 2025 MISO auctions.

•Higher electric base rates, excluding the change in base rates for the MEEIA customer energy-efficiency programs and the RESRAM, resulting from the April 2025 MoPSC electric rate order effective June 1, 2025, increased revenues an estimated $44 million for the three and six months ended June 30, 2025. 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.

•Revenues increased $11 million and $24 million, respectively, due to the collection of 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 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 $13 million for the three months ended June 30, 2025, primarily due to increased commercial and residential retail sales volumes and higher realized prices related to changes in customer usage patterns.

•The effect of weather increased revenues an estimated $11 million for the six months ended June 30, 2025 due to colder winter temperatures as heating degree days increased 22%, partially offset by milder spring and early summer temperatures as cooling degree days decreased 26% from the year-ago period.

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The following items decreased Ameren Missouri’s electric revenues for the three and six months ended June 30, 2025 (except where a specific