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REGULATORY ASSETS AND LIABILITIES
 9 Months Ended
Sep. 30, 2026
Regulatory Assets and Liabilities Disclosure [Abstract]  
REGULATORY ASSETS AND LIABILITIES REGULATORY ASSETS AND LIABILITIES
The following regulatory assets and liabilities were reflected on our balance sheets at September 30, 2026 and December 31, 2025. For more information on our regulatory assets and liabilities, see Note 7, Regulatory Assets and Liabilities, in our 2025 Annual Report on Form 10-K.
(in millions)September 30, 2026December 31, 2025
Regulatory assets
We Power finance leases$1,166.3 $1,158.6 
Plant retirement related items601.1 634.3 
Income tax related items465.2 413.3 
Pension and OPEB costs262.6 289.0 
System support resource85.0 92.6 
Electric transmission costs71.0 15.3 
Asset retirement obligations67.6 59.7 
Securitization60.9 67.5 
Uncollectible expense49.3 114.7 
Other finance and operating leases34.9 25.2 
Derivatives19.5 9.0 
Revenue requirements of generation facilities (1)
16.6 3.6 
Bluewater Natural Gas Holding, LLC8.3 13.9 
Other, net52.9 44.3 
Total regulatory assets$2,961.2 $2,941.0 

(1)These amounts primarily represent the deferral of the incremental revenue requirement of incurred costs from the delayed retirement of OCPP Units 7 and 8. See Note 6, Property, Plant, and Equipment, for more information.
(in millions)September 30, 2026December 31, 2025
Regulatory liabilities
Removal costs $906.9 $862.1 
Income tax related items649.1 663.5 
Pension and OPEB benefits111.2 114.6 
Energy costs refundable through rate adjustments69.2 47.2 
Earnings sharing mechanism41.9 29.3 
We Power escrowed costs (1)
20.1 15.1 
Uncollectible expense16.4 — 
VLC transmission service charge (2)
14.7 — 
Other, net48.8 42.8 
Total regulatory liabilities$1,878.3 $1,774.6 
Balance sheet presentation
Other current liabilities$5.8 $15.6 
Regulatory liabilities1,872.5 1,759.0 
Total regulatory liabilities$1,878.3 $1,774.6 

(1)We defer as a regulatory asset or liability the difference between actual costs associated with the We Power generation units and those included in rates until recovery or refund is authorized in a future rate proceeding.

(2)For the transmission service charge associated with our VLCs, we defer as a regulatory liability the amount by which the actual transmission charge billed to us is less than the minimum billing level set in the VLC tariff until refund is authorized in a future rate proceeding. See Note 22, Regulatory Environment, for more information on the VLC tariff.