Company: AILIM
Filing Date: 2025-08-04
Form Type: 10-Q
Source: 0001002910-25-000112
Chunk: 26

Company: Ameren Illinois Co
Filing Date: 2025-08-04
Form: 10-Q
Item: Part I, Item 2
Chunk 26
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Increase (Decrease) by SegmentOverall Ameren Increase of $10 Million (QTD YoY)Overall Ameren Increase of $16 Million (YTD YoY)Total by Segment(a)

(a)Includes other/intersegment eliminations of $2 million and $2 million in the three months ended June 30, 2025 and 2024, respectively. Also includes other/intersegment eliminations of $4 million and $3 million in the six months ended June 30, 2025 and 2024, respectively.    

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

Depreciation and amortization expenses increased $10 million, $9 million, and $1 million in the three months ended June 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. Depreciation and amortization expenses increased $18 million and $16 million in the six months ended June 30, 2025, compared with the year-ago period at Ameren Transmission and Ameren, respectively, primarily because of additional property, plant, and equipment investments. Ameren’s and Ameren Missouri’s depreciation and amortization expenses for the three and six months ended June 30, 2025, compared with the year-ago periods, were affected by the following, which include the effect of the additional investments at Ameren Missouri:

•The amortization of a regulatory asset associated with the securitization of Ameren Missouri’s Rush Island Energy Center increased depreciation and amortization expenses by $5 million and $11 million, respectively.

•Increased depreciation and amortization of $5 million in both periods due to the inclusion in base rates of property, plant, and equipment previously eligible for deferral to a regulatory asset under the PISA and RESRAM effective June 1, 2025, pursuant to the April 2025 MoPSC electric rate order. 

•Higher depreciation not recoverable under PISA or RESRAM increased expenses by $2 million and $4 million, respectively.

•The lower net deferral pursuant to a tracker related to certain excess deferred income taxes, which increased depreciation and amortization expenses by $2 million in both periods.

•The absence of depreciation expense associated with Ameren Missouri’s Rush Island Energy Center decreased expenses by $9 million and $18 million,