Company: AILIM
Filing Date: 2025-08-04
Form Type: 10-Q
Source: 0001002910-25-000112
Chunk: 133

Company: Ameren Illinois Co
Filing Date: 2025-08-04
Form: 10-Q
Item: Part I, Item 1
Chunk 133
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 fuel and purchased power” line items, respectively.

(c)Represents the estimated variation resulting primarily from changes in cooling and heating degree-days on electric and natural gas demand compared with the year-ago periods; this variation is based on temperature readings from National Oceanic and Atmospheric Administration weather stations at local airports in our service territories.

(d)Changes in RESRAM revenues are largely offset in “Fuel and purchased power,” “Other operations and maintenance,” “Depreciation and amortization,” “Taxes other than income taxes,” or “Income taxes” on the statement of income. 

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(e)Electric and natural gas revenue changes are offset by corresponding changes in “Fuel and purchased power” and “Natural gas purchased for resale” on the statement of income. For the three and six months ended June 30, 2025, activity in Other/Intersegment Eliminations of $13 million and $23 million, respectively, was due primarily to the changes in Ameren Transmission revenue from transmission services provided to Ameren Illinois Electric Distribution (-$13 million and -$22 million, respectively). See Note 14 – Segment Information under Part I, Item 1, of this report for additional information on intersegment eliminations. These items have 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 $517 million, or 34%, and $775 million, or 27%, for the three and six months ended June 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 $17 million, or 9%, and $42 million, or 11%, for the three and six months ended June 30, 2025, respectively, compared with the year-ago periods. Revenues were primarily affected by higher recoverable expenses (+$12 million and +$32 million, respectively) and increased capital investment (+$5 million and +$10 million, respectively), as evidenced by a 6% increase in rate base used to calculate the revenue requirement. 

Ameren Missouri

Ameren Missouri’s electric