Company: AILIM
Filing Date: 2025-11-06
Form Type: 10-Q
Source: 0001002910-25-000129
Chunk: 24

Company: Ameren Illinois Co
Filing Date: 2025-11-06
Form: 10-Q
Item: Part I, Item 2
Chunk 24
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2025, related to the NSR and Clean Air Act litigation associated with the Rush Island Energy Center.

•Expenses associated with the MEEIA customer energy-efficiency program decreased $4 million and $11 million, respectively, as approved by the MoPSC in November 2024.

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

•Non-nuclear energy center operations and maintenance expenses increased $6 million and $10 million in the three and nine months ended September 30, 2025.

•Increased expense of $5 million and $9 million, respectively, for cloud-related software.

•Transmission and distribution storm-related expenses increased $8 million in the nine months ended September 30, 2025, primarily because of the major storms experienced throughout its service territory in 2025.

•Transmission and distribution expenditures, excluding major storm-related costs, increased $6 million and $4 million in the three and nine months ended September 30, 2025, respectively, largely due to increased vegetation management expenditures and higher levels of pole inspections.

Ameren Illinois

Other operations and maintenance expenses increased $12 million and $39 million in the three and nine months ended September 30, 2025, respectively, compared with the year-ago periods, primarily due to the following items:

Ameren Illinois Electric Distribution

Other operations and maintenance expenses increased $8 million and $41 million in the three and nine months ended September 30, 2025, respectively, primarily due to the following items (except where a specific period is referenced):

•Increased costs of $6 million and $11 million, respectively, resulting from compliance with new and expanding programs under CEJA.

•Bad debt costs on accounts receivables increased $10 million in the nine months ended September 30, 2025, primarily because of a higher base level of expenses included in customer rates pursuant to the associated rider.

•Increased costs associated with customer energy-efficiency investments under formula ratemaking of $3 million and $9 million, respectively, primarily due to amortization of regulatory assets.

•Increased expense of $4 million and $7 million, respectively, for cloud-related software.

•Distribution expenditures increased $3 million and $7 million, respectively, primarily due to higher levels of pole inspections and