Company: AILIM
Filing Date: 2025-11-06
Form Type: 10-Q
Source: 0001002910-25-000129
Chunk: 142

Company: Ameren Illinois Co
Filing Date: 2025-11-06
Form: 10-Q
Item: Part I, Item 1
Chunk 142
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 three and nine months ended September 30, 2025, respectively, compared with the year-ago periods, primarily due to summer capacity prices increasing from $30 per MW-day in 2024 to $667 per MW-day in 2025 pursuant to the April 2025 annual MISO capacity auction (+$47 million and +$88 million, respectively), increased volumes (+$29 million and +$51 million, respectively), primarily due to residential and small commercial customers switching from alternative retail electric suppliers to Ameren Illinois’ supplied power, increases in transmission service charges (+$11 million and +$36 million, respectively), and increased energy prices (+$33 million and +$15 million, respectively). The changes to “Cost recovery mechanisms - offset in electric revenue” are fully offset by changes to “Cost recovery mechanisms - offset in fuel and purchased power” in electric revenues.

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Natural Gas Purchased for Resale

The following table presents the increases (decreases) by Ameren segment for natural gas purchased for resale for the three and nine months ended September 30, 2025, compared with the year-ago periods:

Three MonthsAmeren MissouriAmeren IllinoisElectric DistributionAmeren IllinoisNatural GasAmeren TransmissionOther /Intersegment EliminationsAmerenNatural gas purchased for resale change:Cost recovery mechanisms – offset in natural gas revenue(a)$2 $— $(7)$— $— $(5)Total natural gas purchased for resale change$2 $— $(7)$— $— $(5)Nine MonthsNatural gas purchased for resale change:Effect of weather (estimate)(b)$7 $— $— $— $— $7 Cost recovery mechanisms – offset in natural gas revenue(a)(3)— 15 — — 12 Total natural gas purchased for resale change$4 $— $15 $— $— $19 

(a)Natural gas purchased for resale changes are offset by corresponding changes in “Natural gas revenues” on the statement of income. These items have no overall impact on earnings.

(b)Represents the estimated variation resulting primarily from changes in cooling and heating degree-days on natural gas demand compared with the year-ago periods; this variation is based on temperature readings from the National Oceanic and Atmospheric Administration weather stations at local airports in our service territories.

Ameren

Ameren Missouri and Ameren Illinois are allowed to pass on to customers prud