Company: AILIM
Filing Date: 2025-11-06
Form Type: 10-Q
Source: 0001002910-25-000129
Chunk: 138

Company: Ameren Illinois Co
Filing Date: 2025-11-06
Form: 10-Q
Item: Part I, Item 1
Chunk 138
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%, for the three and nine months ended September 30, 2025, respectively, compared with the year-ago periods, driven by increased revenues at Ameren Illinois Electric Distribution and Ameren Illinois Transmission.

Ameren Illinois Electric Distribution

Ameren Illinois Electric Distribution’s revenues increased $147 million, or 27%, and $277 million, or 18%, for the three and nine months ended September 30, 2025, respectively, compared with the year-ago periods.

The following items increased Ameren Illinois Electric Distribution’s revenues for the three and nine months ended September 30, 2025:

•Revenues associated with “Cost recovery mechanisms – offset in fuel and purchased power” increased $126 million and $201 million, respectively, due to increased purchased power expenses recovered from customers. The increase in electric revenues are fully offset by an increase in purchased power expenses under cost recovery mechanisms for purchased power, as discussed below.

•Base rates increased revenues by $23 million and $54 million, respectively, due to higher recoverable non-purchased power expenses 

(+$22 million and +$46 million, respectively) and increased capital investment (+$1 million and +$7 million, respectively).

•Other revenues increased $3 million and $12 million, respectively, primarily due to mutual assistance provided to Ameren Missouri for major storms experienced in 2025 throughout its service territory and the recovery of and return on increased customer generation rebates.

•Revenues increased $6 million and $10 million, respectively, due to the recovery of and return on increased energy-efficiency program investments under performance-based formula ratemaking.

Other cost recovery mechanisms decreased revenues by $11 million for the three months ended September 30, 2025, primarily due to a lower amount of bad debt costs included in customer rates, effective June 2025, pursuant to the associated rider.

Ameren Illinois Transmission

Ameren Illinois Transmission’s revenues increased $21 million, or 14%, and $60 million, or 14%, for the three and nine months ended September 30, 2025, respectively, compared with the year-ago periods. Base rate revenues were primarily affected by higher recoverable expenses (+$8 million and +$39 million, respectively) and increased capital investment (+$6 million and +$14 million, respectively), as evidenced by an 8% increase in rate base used to calculate the revenue requirement. Additionally, revenues were favor