Company: AILIM
Filing Date: 2025-11-06
Form Type: 10-Q
Source: 0001002910-25-000129
Chunk: 143

Company: Ameren Illinois Co
Filing Date: 2025-11-06
Form: 10-Q
Item: Part I, Item 1
Chunk 143
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ently incurred costs for natural gas purchased for resale. Ameren’s natural gas purchased for resale expenses were comparable for the three months ended September 30, 2025, and increased $19 million, or 9%, for the nine months ended September 30, 2025, compared with the year-ago periods, primarily due to increased natural gas purchased for resale expenses at Ameren Illinois Natural Gas, as discussed below.

Ameren Missouri

Ameren Missouri’s natural gas purchased for resale expenses were comparable for the three and nine months ended September 30, 2025, compared with the year-ago periods.

Ameren Illinois Natural Gas

Ameren Illinois Natural Gas’ natural gas purchased for resale expenses decreased $7 million, or 27%, for the three months ended September 30, 2025, and increased $15 million, or 9%, for the nine months ended September 30, 2025, compared with the year-ago periods, primarily due to the amortization of natural gas costs that were previously deferred under the PGA. Changes in natural gas purchased for resale expenses are fully offset by changes in natural gas revenues under the PGA.

58

Other Operations and Maintenance Expenses

Increase (Decrease) by SegmentOverall Ameren Decrease of $18 Million (QTD YoY)Overall Ameren Decrease of $8 Million (YTD YoY)Total by Segment(a)

(a)Includes $19 million and $19 million at Ameren Transmission in the three months ended September 30, 2025 and 2024, respectively. Includes other/intersegment eliminations of $(3) million and $(1) million in the three months ended September 30, 2025 and 2024, respectively. Also includes other/intersegment eliminations of $(15) million and $(8) million in the nine months ended September 30, 2025 and 2024, respectively. 

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

Ameren

Other operations and maintenance expenses decreased $18 million and $8 million in the three and nine months ended September 30, 2025, due to the changes discussed below. In addition to changes by segments discussed below, other operations and maintenance expenses were comparable in the three months ended September 30, 2025 and decreased $7 million in the nine months ended September 30, 2025, respectively