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Regulatory Matters (Tables)
 9 Months Ended
Sep. 30, 2024
Regulated Operations [Abstract]  
Total Storm Restoration Costs Across Subsidiary Registrants
As discussed further below, the Subsidiary Registrants were impacted by significant storms in 2024. Each Subsidiary Registrant is responsible for the restoration of service within its respective service territory and the recovery of related storm costs, including financing costs and, as applicable, the replenishment of storm-related reserves. The Subsidiary Registrants are considering all available avenues to recover storm-related costs, including insurance recovery and the securitization for certain costs, where applicable. Total storm restoration costs across the Subsidiary Registrants, including capital expenditures, for hurricanes Helene, Debby and Milton are estimated to be in the range of $2.4 billion to $2.9 billion and are expected to primarily impact the following registrants:
(in millions)
Cost Estimate Range(a)
Duke Energy Carolinas$950 -$1,150 
Duke Energy Progress350 -450 
Duke Energy Florida1,100 -1,300 
(a)    These estimates do not include amounts for rebuilding certain damaged infrastructure, as estimates of such costs are not yet available, and will change as restoration work is completed and additional information is received on actual costs incurred. Duke Energy Florida was the only jurisdiction materially impacted by Hurricane Milton.