Organization and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash

The following table presents the components of cash, cash equivalents and restricted cash included on the Condensed Consolidated Balance Sheets.


	September 30, 2025										December 31, 2024
			Duke				Duke		Duke				Duke				Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Duke		Energy		Progress		Energy		Energy
	Energy		Carolinas		Energy		Progress		Florida		Energy		Carolinas		Energy		Progress		Florida
Current Assets
Cash and cash equivalents	$	688	$	44	$	102	$	55	$	30	$	314	$	6	$	73	$	24	$	33
Other	38		5		32		20		12		84		9		76		40		35
Other Noncurrent Assets
Other	13		—		—		—		—		20		1		11		5		7
Total cash, cash equivalents and restricted cash	$	739	$	49	$	134	$	75	$	42	$	418	$	16	$	160	$	69	$	75

Schedule of Utility Inventory

The components of inventory are presented in the tables below.


	September 30, 2025
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	3,482	$	1,172	$	1,708	$	1,106	$	602	$	153	$	402	$	13
Coal	718		328		249		170		79		18		123		—
Natural gas, oil and other fuel	294		45		194		104		90		11		2		41
Total inventory	$	4,494	$	1,545	$	2,151	$	1,380	$	771	$	182	$	527	$	54


	December 31, 2024
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	3,386	$	1,150	$	1,649	$	1,074	$	576	$	149	$	389	$	11
Coal	801		341		241		164		77		23		196		—
Natural gas, oil and other fuel	309		45		196		103		92		11		1		55
Total inventory	$	4,496	$	1,536	$	2,086	$	1,341	$	745	$	183	$	586	$	66

Schedule of Accounts Payable Finance Program

The following table presents the amounts included within Accounts payable on the Condensed Consolidated Balance Sheets sold to the financial institution by our suppliers and the supplier invoices sold to the financial institution under the program included within Net cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2025, and 2024.


	Three Months Ended September 30, 2024 and 2025

	Duke
(in millions)	Energy		Piedmont
Confirmed obligations outstanding at June 30, 2024	$	28	$	28
Invoices confirmed during the period	26		25
Confirmed invoices paid during the period	(28)		(28)
Confirmed obligations outstanding at September 30, 2024	$	26	$	25

Confirmed obligations outstanding at June 30, 2025	$	12	$	12
Invoices confirmed during the period	15		15
Confirmed invoices paid during the period	(14)		(14)
Confirmed obligations outstanding at September 30, 2025	$	13	$	13

	Nine Months Ended September 30, 2024 and 2025

	Duke
(in millions)	Energy		Piedmont
Confirmed obligations outstanding at December 31, 2023	$	50	$	47
Invoices confirmed during the period	146		144
Confirmed invoices paid during the period	(170)		(166)
Confirmed obligations outstanding at September 30, 2024	$	26	$	25

Confirmed obligations outstanding at December 31, 2024	$	13	$	12
Invoices confirmed during the period	47		45
Confirmed invoices paid during the period	(47)		(44)
Confirmed obligations outstanding at September 30, 2025	$	13	$	13