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

Company: Ameren Illinois Co
Filing Date: 2025-11-06
Form: 10-Q
Item: Part I, Item 2
Chunk 25
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 other maintenance activity.

•Injuries and damages increased $3 million and $5 million, respectively, primarily due to an increase in claims compared to the year-ago period.

The above increases in the three and nine months ended September 30, 2025, compared with the year-ago periods, were partially offset by the following items (except where a specific period is referenced):

•Bad debt costs on purchased receivables decreased $5 million and $11 million, respectively, primarily because of a lower base level of expenses included in customer rates pursuant to the associated rider.

•Reduction in environmental remediation rider costs of $3 million and $7 million, respectively.

•Bad debt costs on accounts receivables decreased $7 million in the three months ended September 30, 2025, primarily because of a lower base level of expenses included in customer rates, effective June 2025, pursuant to the associated rider.

Ameren Illinois Natural Gas

Other operations and maintenance expenses were comparable between periods.

Ameren Illinois Transmission

Other operations and maintenance expenses were comparable between periods.

60

Depreciation and Amortization Expenses

Increase (Decrease) by SegmentOverall Ameren Increase of $27 Million (QTD YoY)Overall Ameren Increase of $43 Million (YTD YoY)Total by Segment(a)

(a)Includes other/intersegment eliminations of $2 million and $2 million in the three months ended September 30, 2025 and 2024, respectively. Also includes other/intersegment eliminations of $6 million and $5 million in the nine months ended September 30, 2025 and 2024, respectively.    

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

Depreciation and amortization expenses increased $27 million, $19 million, and $7 million in the three months ended September 30, 2025, compared with the year-ago period at Ameren, Ameren Missouri, and Ameren Transmission, respectively, primarily because of additional property, plant, and equipment investments. Depreciation and amortization expenses increased $43 million, $25 million, and $19 million in the nine months ended September 30, 2025, compared with the year-ago period at Ameren, Ameren Transmission, and Ameren Missouri, respectively, primarily because of additional property, plant, and equipment investments