Company: AILIM
Filing Date: 2025-05-05
Form Type: 10-Q
Source: 0001002910-25-000098
Chunk: 11

Company: Ameren Illinois Co
Filing Date: 2025-05-05
Form: 10-Q
Item: Part I, Item 2
Chunk 11
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Intersegment Eliminations of $10 million represents the changes in eliminations of related-party transactions between Ameren Missouri, Ameren Illinois, and ATXI (-$1 million), as well as changes in Ameren Transmission revenue from transmission services provided to Ameren Illinois Electric Distribution (-$9 million). See Note 8 – Related-party Transactions and 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,” “Depreciation and amortization,” or in “Taxes other than income taxes,” within the “Operating Expenses” section of the statement of income. These items have no overall impact on earnings.

45

Electric Revenues

Ameren

Ameren’s electric revenues increased $258 million, or 19%, for the three months ended March 31, 2025, compared with the year-ago period, 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 $25 million, or 14%, for the three months ended March 31, 2025, compared with the year-ago period. Revenues were favorably affected by higher recoverable expenses (+$20 million) and increased capital investment 

(+$5 million), as evidenced by a 7% increase in rate base used to calculate the revenue requirement. 

Ameren Missouri

Ameren Missouri’s electric revenues increased $179 million, or 25%, for the three months ended March 31, 2025, compared with the year-ago period.

The following items increased Ameren Missouri’s electric revenues between periods:

•“Off-system sales, capacity, transmission, and FAC revenues, net” increased $165 million, primarily due to higher spring capacity prices, which were set by annual MISO auctions.

•The effect of weather increased revenues an estimated $38 million due to colder winter temperatures in 2025 as heating degree days increased 21% from the year-ago period.

•Revenues increased $13 million 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