Company: AILIM
Filing Date: 2025-08-04
Form Type: 10-Q
Source: 0001002910-25-000112
Chunk: 17

Company: Ameren Illinois Co
Filing Date: 2025-08-04
Form: 10-Q
Item: Part I, Item 2
Chunk 17
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 milder spring and early summer temperatures as cooling degree days decreased 26% from the year-ago period.

52

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

•The effect of weather decreased revenues an estimated $27 million for the three months ended June 30, 2025, due to milder spring and early summer temperatures in 2025 as cooling degree days decreased 27% from the year-ago period.

•In accordance with the June 2024 MoPSC financing order, revenues decreased $9 million and $26 million, respectively, 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 $6 million and $18 million, respectively, 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 $9 million and $7 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 $67 million, or 11%, and $147 million, or 12%, for the three and six months ended June 30, 2025, respectively, compared with the year-ago periods, driven by increased revenues at Ameren Illinois Electric Distribution and Ameren Illinois Transmission.

Ameren Illinois Electric Distribution

Ameren Illinois Electric Distribution’s revenues increased $64 million, or 13%, and $130 million, or 13%, for the three and six months ended June 30, 2025, respectively, compared with the year-ago periods.

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

•Revenues associated with “Cost recovery mechanisms – offset in fuel and purchased power” increased $55 million and $75