Revenue

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

REVENUE

Duke Energy earns substantially all of its revenues through its reportable segments, Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables.

Electric Utilities and Infrastructure

Electric Utilities and Infrastructure earns the majority of its revenues through retail and wholesale electric service through the generation, transmission, distribution and sale of electricity. Duke Energy generally provides retail and wholesale electric service customers with their full electric load requirements or with supplemental load requirements when the customer has other sources of electricity.

The majority of wholesale revenues are full requirements contracts where the customers purchase the substantial majority of their energy needs and do not have a fixed quantity of contractually required energy or capacity. As such, related forecasted revenues are considered optional purchases. Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations:



	Remaining Performance Obligations
(in millions)	2020		2021		2022		2023		2024		Thereafter		Total
Progress Energy	$	84	$	92	$	87	$	44	$	45	$	58	$	410
Duke Energy Progress	6		8		8		8		8		—		38
Duke Energy Florida	78		84		79		36		37		58		372
Duke Energy Indiana	8		5		—		—		—		—		13

Revenues for block sales are recognized monthly as energy is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates.

Gas Utilities and Infrastructure

Gas Utilities and Infrastructure earns its revenues through retail and wholesale natural gas service through the transportation, distribution and sale of natural gas. Duke Energy generally provides retail and wholesale natural gas service customers with all natural gas load requirements. Additionally, while natural gas can be stored, substantially all natural gas provided by Duke Energy is consumed by customers simultaneously with receipt of delivery.

Fixed-capacity payments under long-term contracts for the Gas Utilities and Infrastructure segment include minimum margin contracts and supply arrangements with municipalities and power generation facilities. Revenues for related sales are recognized monthly as natural gas is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates. Estimated remaining performance obligations are as follows:



	Remaining Performance Obligations
(in millions)	2020		2021		2022		2023		2024		Thereafter		Total
Piedmont	$	51	$	65	$	64	$	61	$	58	$	376	$	675

Commercial Renewables

Commercial Renewables earns the majority of its revenues through long-term PPAs and generally sells all of its wind and solar facility output, electricity and Renewable Energy Certificates (RECs) to customers. The majority of these PPAs have historically been accounted for as leases. For PPAs that are not accounted for as leases, the delivery of electricity and the delivery of RECs are considered separate performance obligations.

Other

The remainder of Duke Energy’s operations is presented as Other, which does not include material revenues from contracts with customers.

Disaggregated Revenues

Disaggregated revenues are presented as follows:



	Three Months Ended March 31, 2020
			Duke				Duke		Duke		Duke			Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy			Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio			Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,261	$	756	$	1,064	$	502	$	562	$	176		$	265	$	—
General	1,492		549		648		319		329		114			181		—
Industrial	693		269		216		154		62		35			175		—
Wholesale	497		114		321		279		42		7			55		—
Other revenues	191		60		118		63		55		20			16		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,134	$	1,748	$	2,367	$	1,317	$	1,050	$	352		$	692	$	—

Gas Utilities and Infrastructure
Residential	$	362	$	—	$	—	$	—	$	—	$	97		$	—	$	264
Commercial	169		—		—		—		—		43			—		126
Industrial	41		—		—		—		—		6			—		36
Power Generation	—		—		—		—		—		—			—		11
Other revenues	30		—		—		—		—		6			—		24
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	602	$	—	$	—	$	—	$	—	$	152		$	—	$	461

Commercial Renewables
Revenue from contracts with customers	$	58	$	—	$	—	$	—	$	—	$	—		$	—	$	—

Other
Revenue from contracts with customers	$	6	$	—	$	—	$	—	$	—	$	—		$	—	$	—
Total revenue from contracts with customers	$	5,800	$	1,748	$	2,367	$	1,317	$	1,050	$	504		$	692	$	461

Other revenue sources^(a)	$	149	$	—	$	55	$	21	$	30	$	(6	)	$	—	$	51
Total revenues	$	5,949	$	1,748	$	2,422	$	1,338	$	1,080	$	498		$	692	$	512


(a)	Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.



	Three Months Ended March 31, 2019
			Duke				Duke		Duke		Duke		Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy		Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,370	$	760	$	1,114	$	536	$	578	$	189	$	306	$	—
General	1,427		496		632		306		326		103		197		—
Industrial	711		266		222		161		61		33		190		—
Wholesale	541		119		353		315		38		14		54		—
Other revenues	172		78		172		125		47		16		17		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,221	$	1,719	$	2,493	$	1,443	$	1,050	$	355	$	764	$	—

Gas Utilities and Infrastructure
Residential	$	414	$	—	$	—	$	—	$	—	$	112	$	—	$	302
Commercial	206		—		—		—		—		49		—		157
Industrial	48		—		—		—		—		7		—		42
Power Generation	—		—		—		—		—		—		—		13
Other revenues	63		—		—		—		—		8		—		56
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	731	$	—	$	—	$	—	$	—	$	176	$	—	$	570

Commercial Renewables
Revenue from contracts with customers	$	42	$	—	$	—	$	—	$	—	$	—	$	—	$	—

Other
Revenue from contracts with customers	$	4	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total revenue from contracts with customers	$	5,998	$	1,719	$	2,493	$	1,443	$	1,050	$	531	$	764	$	570

Other revenue sources^(a)	$	165	$	25	$	79	$	41	$	36	$	—	$	4	$	9
Total revenues	$	6,163	$	1,744	$	2,572	$	1,484	$	1,086	$	531	$	768	$	579


(a)	Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

As described in Note 1, Duke Energy adopted the new guidance for credit losses effective January 1, 2020, using the modified retrospective method of adoption, which does not require restatement of prior year reported results. The following table presents the reserve for credit losses for trade and other receivables based on adoption of the new standard.



	March 31, 2020
				Duke						Duke			Duke			Duke		Duke
	Duke			Energy			Progress			Energy			Energy			Energy		Energy
(in millions)	Energy			Carolinas			Energy			Progress			Florida			Ohio		Indiana		Piedmont
Balance at December 31, 2019	$	76		$	10		$	16		$	8		$	7		$	4	$	3	$	6
Cumulative Change in Accounting Principle	5			1			2			1			1			—		—		1
Write-Offs	(10		)	(3		)	(4		)	(2		)	(2		)	—		—		(1		)
Credit Loss Expense	18			3			6			2			5			1		—		3
Balance at March 31, 2020	$	89		$	11		$	20		$	9		$	11		$	5	$	3	$	9

Trade and other receivables are evaluated based on an estimate of the risk of loss over the life of the receivable and current and historical conditions using supportable assumptions. Management evaluates the risk of loss for trade and other receivables by comparing the historical write-off amounts to total revenue over a specified period. Historical loss rates are adjusted due to the impact of current conditions as well as forecasted conditions over a reasonable time period. The calculated write-off rate can be applied to the receivable balance for which an established reserve does not already exist. Management reviews the assumptions and risk of loss annually for trade and other receivables. Due to the COVID-19 pandemic, as described in Note 1, the Duke Energy Registrants suspended customer disconnections for nonpayment. The specific actions taken by each Duke Energy Registrant are described in Note 3. The impact of COVID-19 and Duke Energy’s related response on customers’ ability to pay for service is uncertain, and it is reasonably possible eventual write-offs of customer receivables may increase over current estimates.

The aging of trade receivables is presented in the table below. Duke Energy considers receivables greater than 30 days outstanding past due.



	March 31, 2020
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Unbilled Receivables	$	716	$	285	$	195	$	85	$	110	$	1	$	16	$	32
0-30 days	1,584		448		585		321		262		45		24		134
30-60 days	216		69		67		44		23		9		1		18
60-90 days	65		18		20		14		6		2		1		5
90+ days	145		19		57		32		25		32		11		11
Trade and Other Receivables	$	2,726	$	839	$	924	$	496	$	426	$	89	$	53	$	200

UNBILLED REVENUE

Unbilled revenues are recognized by applying customer billing rates to the estimated volumes of energy or natural gas delivered but not yet billed. Unbilled revenues can vary significantly from period to period as a result of seasonality, weather, customer usage patterns, customer mix, average price in effect for customer classes, timing of rendering customer bills and meter reading schedules and the impact of weather normalization or margin decoupling mechanisms.

Unbilled revenues are included within Receivables and Receivables of VIEs on the Condensed Consolidated Balance Sheets as shown in the following table.



(in millions)	March 31, 2020		December 31, 2019
Duke Energy	$	716	$	843
Duke Energy Carolinas	285		298
Progress Energy	195		217
Duke Energy Progress	85		122
Duke Energy Florida	110		95
Duke Energy Ohio	1		1
Duke Energy Indiana	16		16
Piedmont	32		78

Additionally, Duke Energy Ohio and Duke Energy Indiana sell, on a revolving basis, nearly all of their retail accounts receivable, including receivables for unbilled revenues, to an affiliate, CRC, and account for the transfers of receivables as sales. Accordingly, the receivables sold are not reflected on the Condensed Consolidated Balance Sheets of Duke Energy Ohio and Duke Energy Indiana. See Note 11 for further information. These receivables for unbilled revenues are shown in the table below.



(in millions)	March 31, 2020		December 31, 2019
Duke Energy Ohio	$	61	$	82
Duke Energy Indiana	94		115