Company: AILIM
Filing Date: 2025-08-04
Form Type: 10-Q
Source: 0001002910-25-000112
Chunk: 136

Company: Ameren Illinois Co
Filing Date: 2025-08-04
Form: 10-Q
Item: Part I, Item 1
Chunk 136
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31 million, respectively, due to higher recoverable non-purchased power expenses 

(+$5 million and +$25 million, respectively) and increased capital investment (+$4 million and +$6 million, respectively).

•Other cost recovery mechanisms increased revenues by $11 million for the six months ended June 30, 2025, primarily due to a higher amount of bad debt costs included in customer rates pursuant to the associated rider.

•Other revenues increased $4 million and $9 million, respectively, primarily due to mutual assistance provided to Ameren Missouri for major storms experienced in 2025 throughout its service territory and increased revenues related to pole rents.

•Revenues increased $4 million for the six months ended June 30, 2025, 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 $3 million for the three months ended June 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 $16 million, or 12%, and $39 million, or 15%, for the three and six months ended June 30, 2025, respectively, compared with the year-ago periods. Base rate revenues were primarily affected by higher recoverable expenses (+$12 million and +$31 million, respectively) and increased capital investment (+$4 million and +$8 million, respectively), as evidenced by a 7% increase in rate base used to calculate the revenue requirement. 

Natural Gas Revenues

Ameren

Ameren’s natural gas revenues increased $11 million, or 6%, and $34 million, or 5%, for the three and six months ended June 30, 2025, respectively, compared with the year-ago periods, due to increased revenues at Ameren Illinois Natural Gas and Ameren Missouri, as discussed below. 

53

Ameren Missouri

Ameren Missouri’s natural gas revenues were comparable for the three months ended June 30, 2025, and increased $4 million, or 5%, compared with the six months ended June 30, 2025, primarily due to colder winter temperatures.

Ameren Illinois Natural Gas

Ameren Illinois Natural Gas’ revenues increased $10 million, or