Company: AILIM
Filing Date: 2025-02-18
Form Type: 10-K
Source: 0001002910-25-000055
Chunk: 253

Company: Ameren Illinois Co
Filing Date: 2025-02-18
Form: 10-K
Item: Item 7
Chunk 253
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 temperature readings from National Oceanic and Atmospheric Administration weather stations at local airports in our service territories.

(d)The electric deferred income tax adjustment relates to certain excess deferred income taxes that will be amortized through 2025. Offsetting expense increases or decreases are reflected within "Income Taxes" on the statement of income. This item has no overall impact on earnings.

(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. Activity in Other/Intersegment Eliminations of $12 million represents the changes in eliminations of related-party transactions between Ameren Missouri, Ameren Illinois, and ATXI (-$6 million), as well as changes in Ameren Transmission revenue from transmission services provided to Ameren Illinois Electric Distribution 

(-$6 million). See Note 13 – Related-party Transactions and Note 16 – Segment Information under Part II, Item 8, 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 “Operating Expenses” on the statement of income. These items have no overall impact on earnings.

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Table of Contents

Electric Revenues

Ameren

Ameren’s electric revenues increased $101 million, or 2%, in 2024, compared with 2023, due to increased revenues at Ameren Missouri and Ameren Transmission, partially offset by decreased revenues at Ameren Illinois Electric Distribution, as discussed below. 

Ameren Transmission

Ameren Transmission’s electric revenues increased $104 million, or 15%, in 2024, compared with 2023. Revenues were favorably affected by higher recoverable expenses (+$55 million), increased capital investment (+$44 million), as evidenced by a 15% increase in rate base used to calculate the revenue requirement, and increased facility rental revenues (+$15 million) related to ATXI’s transmission operations control center, which was placed in service in December 2023. ATXI provides affiliates with access to this facility. Rental revenues associated with this facility are affiliate transactions and eliminated in consolidation for Ameren’s consolidated financial statements. See Note 13 – Related-party Transactions under Part II, Item 8, of this report for additional information. Revenues were unfavorably affected by