Company: AILIM
Filing Date: 2025-08-04
Form Type: 10-Q
Source: 0001002910-25-000112
Chunk: 142

Company: Ameren Illinois Co
Filing Date: 2025-08-04
Form: 10-Q
Item: Part I, Item 1
Chunk 142
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 This is primarily due to a decrease of $5 million in individually insignificant items in the six months ended June 30, 2025 and a decrease of $5 million and $8 million in the elimination of the non-service cost component of net periodic benefit income in the three and six months ended June 30, 2025, respectively. The non-service cost component of net periodic benefit cost or income at Ameren Services is allocated to the segments and primarily included in the segments’ other operations and maintenance expenses. The decreases are offset by the absence of a gain on the sale of land of $8 million that occurred in 2024 for the three and six months ended June 30, 2025.

Ameren Transmission

Other operations and maintenance expenses were comparable between periods. 

Ameren Missouri

Other operations and maintenance expenses decreased $9 million and $13 million in the three and six months ended June 30, 2025, respectively, compared with the year-ago periods. The following items decreased other operations and maintenance expenses in the three and six months ended June 30, 2025, compared with the year-ago periods (except where a specific period is referenced):

•The absence in 2025 of a $15 million charge in the six months ended June 30, 2025, related to the NSR and Clean Air Act litigation associated with the Rush Island Energy Center.

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•Expenses associated with the MEEIA customer energy-efficiency program decreased $6 million and $7 million, respectively, as approved by the MoPSC.

•Callaway Energy Center operating costs decreased $5 million in both periods, primarily due to the spring 2025 refueling and maintenance outage.

The following items partially offset the decrease in other operations and maintenance expenses for the three and six months ended June 30, 2025, compared with the year-ago periods (except where a specific period is referenced):

•Transmission and distribution storm-related expenses increased $4 million and $9 million, respectively, because of the major storms experienced throughout its service territory in 2025.

•Increased expense of $4 million for cloud-related software in the six months ended June 30, 2025.

•Non-nuclear energy center maintenance increased $4 million in the six months ended June 30, 2025, primarily due to an increase in coal additives.

Ameren Illinois

Other operations and maintenance expenses increased $1 million and $27 million in the three and