v3.25.1
Regulatory Matters (Tables)
3 Months Ended
Mar. 31, 2025
Regulated Operations [Abstract]  
Schedule of Generate Rate Cases and Infrastructure Surcharges
The table below summarizes the annualized incremental revenues, assuming a constant sales volume and customer count, resulting from general rate case authorizations that became effective during 2025. The amounts include reductions for the amortization of the excess accumulated deferred income taxes (“EADIT”) that are generally offset in income tax expense.
Effective DateAmount
General rate cases by state:
VirginiaFebruary 24, 2025 (a)$15 
TennesseeJanuary 21, 2025
California, Step IncreaseJanuary 1, 202517 
IllinoisJanuary 1, 2025105 
Total general rate case authorizations$138 
(a)Interim rates were effective May 1, 2024, and the difference between interim and final approved rates were subject to refund. The Virginia State Corporation Commission issued its final order on February 24, 2025.
Schedule of Annualized Incremental Revenues Presented in the table below are annualized incremental revenues, assuming a constant sales volume and customer count, resulting from infrastructure surcharge authorizations that became effective during 2025:
Effective DateAmount
Infrastructure surcharges by state:
MissouriFebruary 7, 2025$17 
KentuckyJanuary 1, 2025
West VirginiaJanuary 1, 2025
Total infrastructure surcharge authorizations$23