Company: AILIM
Filing Date: 2025-02-18
Form Type: 10-K
Source: 0001002910-25-000055
Chunk: 265

Company: Ameren Illinois Co
Filing Date: 2025-02-18
Form: 10-K
Item: Item 7
Chunk 265
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 decreases were partially offset by the increase of $4 million in other interest income on regulatory balances.

Ameren Missouri

Other income, net, increased $66 million in 2024, compared with 2023, primarily because of an increase of $42 million in the non-service cost component of net periodic benefit income because of changes in the base level of pension and postretirement costs pursuant to the June 2023 MoPSC electric rate order. Other income, net, also increased $28 million because of a higher allowance for equity funds used during construction resulting from higher average construction work in progress balances. These increases were offset by a decrease of $2 million in other interest income on regulatory balances.

Ameren Illinois

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Table of Contents

Other income, net, decreased $9 million in 2024, compared with 2023. Other income, net, decreased primarily because of a decrease of $12 million and $6 million in the non-service cost component of net periodic benefit income at Ameren Illinois Electric Distribution and Ameren Illinois Natural Gas, respectively. Other income, net decreased $2 million in the allowance of equity funds used during construction, largely at Ameren Illinois Electric Distribution. These decreases were partially offset by the increase in other interest income on regulatory balances of $11 million, largely at Ameren Illinois Electric Distribution. 

Interest Charges

Total by SegmentIncrease by SegmentOverall Ameren Increase of $97 Million

Ameren MissouriAmeren Illinois Natural GasOther/Intersegment EliminationsAmeren Illinois Electric DistributionAmeren Transmission

See Note 4 – Short-term Debt and Liquidity under Part II, Item 8, of this report and the Long-term Debt and Equity section below for additional information on short-term borrowings and long-term debt, respectively. 

Ameren 

Interest charges increased $97 million in 2024, compared with 2023. In addition to changes by segments discussed below, interest charges increased $42 million for activity not reported as part of a segment, primarily at Ameren (parent), because of issuances of long-term debt in November and December of 2023, which collectively increased interest charges by $64 million. The net proceeds from these issuances were used to repay short-term borrowings, which decreased short-term interest expense by $23 million, compared with 2023.

Ameren Transmission

Interest charges increased $21 million in 2024, compared