Company: AILIM
Filing Date: 2025-11-06
Form Type: 10-Q
Source: 0001002910-25-000129
Chunk: 136

Company: Ameren Illinois Co
Filing Date: 2025-11-06
Form: 10-Q
Item: Part I, Item 1
Chunk 136
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 no overall impact on earnings.

(f)Offsetting expense increases or decreases are reflected in “Other operations and maintenance,” “Taxes other than income taxes,” or “Income taxes” on the statement of income. These items have no overall impact on earnings.

Electric Revenues

Ameren

Ameren’s electric revenues increased $528 million, or 26%, and $1,303 million, or 26%, for the three and nine months ended September 30, 2025, respectively, compared with the year-ago periods, primarily due to increased revenues at Ameren Missouri, Ameren Illinois Electric Distribution, and Ameren Transmission, as discussed below. 

Ameren Transmission

Ameren Transmission’s electric revenues increased $30 million, or 14%, and $72 million, or 12%, for the three and nine months ended September 30, 2025, respectively, compared with the year-ago periods. Revenues were primarily affected by higher recoverable expenses 

(+$12 million and +$44 million, respectively) and increased capital investment (+$8 million and +$18 million, respectively), as evidenced by a 7% increase in rate base used to calculate the revenue requirement. Additionally, revenues were favorably affected by a higher ROE 

(+$10 million in both periods) due to the absence of the October 2024 FERC order that decreased base ROE for certain historical periods.

Ameren Missouri

Ameren Missouri’s electric revenues increased $361 million, or 27%, and $991 million, or 34%, for the three and nine months ended September 30, 2025, respectively, compared with the year-ago periods.

The following items increased Ameren Missouri’s electric revenues for the three and nine months ended September 30, 2025:

•“Off-system sales, capacity, transmission, and FAC revenues, net” increased $146 million and $745 million, respectively, primarily due to summer capacity prices increasing from $30 per MW-day in 2024 to $667 per MW-day in 2025 pursuant to the April 2025 annual MISO capacity auction. 

•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 $143 million and $187 million,