Company: AILIM
Filing Date: 2025-02-18
Form Type: 10-K
Source: 0001002910-25-000055
Chunk: 257

Company: Ameren Illinois Co
Filing Date: 2025-02-18
Form: 10-K
Item: Item 7
Chunk 257
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16 million, due to lower collection of natural gas costs previously deferred under the PGA. Changes in natural gas revenues under the PGA are fully offset by the decrease in natural gas purchased for resale expenses.

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Table of Contents

Fuel and Purchased Power

The following table presents the increases (decreases) by Ameren segment for fuel and purchased power in 2024, compared with 2023:

2024 versus 2023Ameren MissouriAmeren IllinoisElectric DistributionAmeren IllinoisNatural GasAmeren TransmissionOther /Intersegment EliminationsAmerenFuel and purchased power change:Energy costs (excluding the estimated effect of weather)$95 $— $— $— $— $95 Effect of higher net energy costs included in base rates22 — — — — 22 Retail sales volumes6 — — — — 6 Transmission service charges8 — — — — 8 Other(3)— — — — (3)Cost recovery mechanisms – offset in electric revenue(a)(54)(193)— — (12)(259)Total fuel and purchased power change$74 $(193)$— $— $(12)$(131)

(a)“Cost recovery mechanisms — offset in electric revenue” changes are offset by corresponding changes in “Cost recovery mechanisms — offset in fuel and purchased power” in electric revenues. 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.

Ameren

Ameren Missouri and Ameren Illinois are generally allowed to pass on to customers prudently incurred costs for fuel and purchased power. Ameren’s electric fuel and purchased power expenses decreased $131 million, or 7%, in 2024, compared with 2023, primarily due to decreased fuel and purchased power expenses at Ameren Illinois Electric Distribution, partially offset by increased fuel and purchased power expenses at Ameren Missouri, as discussed below.

Ameren Missouri

Ameren Missouri’s