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Revenue
 9 Months Ended
Sep. 30, 2025
Revenue from Contract with Customer [Abstract]  
Revenue REVENUE
Duke Energy earns substantially all of its revenues through its reportable segments, EU&I and GU&I.
Electric Utilities and Infrastructure
EU&I 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 as of September 30, 2025:
Remaining Performance Obligations
(in millions)20252026202720282029ThereafterTotal
Duke Energy Carolinas$3 $12 $12 $12 $— $— $39 
Progress Energy8 43 13 13 13 42 132 
Duke Energy Progress1 6 6 6 6 20 45 
Duke Energy Florida7 37 7 7 7 22 87 
Duke Energy Indiana4 17 15 6 — — 42 
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
GU&I earns its revenue 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 GU&I 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 as of September 30, 2025, are as follows:
Remaining Performance Obligations
(in millions)20252026202720282029ThereafterTotal
Piedmont$16 $51 $49 $46 $44 $151 $357 
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 September 30, 2025
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$3,953 $1,134 $2,098 $781 $1,318 $330 $394 $— 
Commercial
2,339 793 1,087 475 614 166 297 — 
   Industrial933 402 276 195 83 37 219 — 
   Wholesale632 172 377 346 32 26 55 — 
   Other revenues191 65 181 96 80 6 19 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$8,048 $2,566 $4,019 $1,893 $2,127 $565 $984 $— 
Gas Utilities and Infrastructure
   Residential$143 $— $— $— $— $80 $— $63 
   Commercial84 — — — — 27 — 57 
   Industrial39 — — — — 8 — 31 
   Power Generation— — — — — — — 8 
   Other revenues57 — — — — 2 — 72 
Total Gas Utilities and Infrastructure revenue from contracts with customers$323 $— $— $— $— $117 $— $231 
Other
Revenue from contracts with customers$6 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$8,377 $2,566 $4,019 $1,893 $2,127 $682 $984 $231 
Other revenue sources(a)
$165 $66 $55 $20 $30 $(3)$8 $40 
Total revenues$8,542 $2,632 $4,074 $1,913 $2,157 $679 $992 $271 
Three Months Ended September 30, 2024
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$3,738 $1,173 $1,973 $811 $1,162 $275 $316 $— 
Commercial
2,287 859 1,035 485 550 152 243 — 
   Industrial924 416 275 196 79 39 193 — 
   Wholesale620 158 394 350 44 15 53 — 
   Other revenues237 71 166 88 78 24 23 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$7,806 $2,677 $3,843 $1,930 $1,913 $505 $828 $— 
Gas Utilities and Infrastructure
   Residential$157 $— $— $— $— $74 $— $83 
   Commercial91 — — — — 23 — 68 
   Industrial36 — — — — 6 — 30 
   Power Generation— — — — — — — 8 
   Other revenues25 — — — — 5 — 20 
Total Gas Utilities and Infrastructure revenue from contracts with customers$309 $— $— $— $— $108 $— $209 
Other
Revenue from contracts with customers$12 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$8,127 $2,677 $3,843 $1,930 $1,913 $613 $828 $209 
Other revenue sources(a)
$27 $30 $17 $(16)$27 $(8)$8 $10 
Total revenues$8,154 $2,707 $3,860 $1,914 $1,940 $605 $836 $219 
Nine Months Ended September 30, 2025
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$10,598 $3,180 $5,465 $2,264 $3,201 $865 $1,089 $— 
Commercial
6,313 2,187 2,898 1,316 1,582 455 775 — 
   Industrial2,606 1,091 807 567 239 106 602 — 
   Wholesale1,825 453 1,148 1,044 104 67 156 — 
   Other revenues689 341 641 370 273 42 27 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$22,031 $7,252 $10,959 $5,561 $5,399 $1,535 $2,649 $— 
Gas Utilities and Infrastructure
   Residential$1,038 $— $— $— $— $366 $— $672 
   Commercial542 — — — — 134 — 408 
   Industrial135 — — — — 33 — 102 
   Power Generation— — — — — — — 25 
   Other revenues201 — — — — 16 — 202 
Total Gas Utilities and Infrastructure revenue from contracts with customers$1,916 $— $— $— $— $549 $— $1,409 
Other
Revenue from contracts with customers$21 $— $— $— $— $— $— $— 
Total Revenue from contracts with customers$23,968 $7,252 $10,959 $5,561 $5,399 $2,084 $2,649 $1,409 
Other revenue sources(a)
$331 $135 $151 $51 $87 $15 $22 $54 
Total operating revenues
$24,299 $7,387 $11,110 $5,612 $5,486 $2,099 $2,671 $1,463 
Nine Months Ended September 30, 2024
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$9,945 $3,190 $5,115 $2,214 $2,901 $768 $872 $— 
Commercial
6,234 2,331 2,834 1,334 1,500 448 624 — 
   Industrial2,615 1,130 808 556 252 110 566 — 
   Wholesale1,698 423 1,086 974 112 39 150 — 
   Other revenues783 269 502 257 245 64 96 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$21,275 $7,343 $10,345 $5,335 $5,010 $1,429 $2,308 $— 
Gas Utilities and Infrastructure
   Residential$859 $— $— $— $— $307 $— $552 
   Commercial434 — — — — 111 — 323 
   Industrial115 — — — — 23 — 92 
   Power Generation— — — — — — — 24 
   Other revenues97 — — — — 19 — 78 
Total Gas Utilities and Infrastructure revenue from contracts with customers$1,505 $— $— $— $— $460 $— $1,069 
Other
Revenue from contracts with customers$30 $— $— $— $— $— $— $— 
Total Revenue from contracts with customers$22,810 $7,343 $10,345 $5,335 $5,010 $1,889 $2,308 $1,069 
Other revenue sources(a)
$187 $68 $100 $3 $82 $2 $34 $70 
Total operating revenues
$22,997 $7,411 $10,445 $5,338 $5,092 $1,891 $2,342 $1,139 
(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
The following table presents the reserve for credit losses for trade and other receivables.
Three Months Ended September 30, 2024 and 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at June 30, 2024$204 $65 $73 $47 $26 $42 $16 $8 
Write-Offs(29)(13)(16)(10)(6)— — — 
Credit Loss Expense34 15 18 7 11 — — 1 
Other Adjustments5 3 4 4 — (1)— — 
Balance at September 30, 2024$214 $70 $79 $48 $31 $41 $16 $9 
Balance at June 30, 2025$195 $57 $70 $42 $28 $41 $17 $8 
Write-Offs(34)(13)(15)(10)(5)(2)(4)— 
Credit Loss Expense25 8 10 5 5 3 4 — 
Other Adjustments13 4 2 2 — 9 — — 
Balance at September 30, 2025$199 $56 $67 $39 $28 $51 $17 $8 
Nine Months Ended September 30, 2024 and 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2023$202 $56 $74 $44 $31 $9 $5 $8 
Write-Offs(97)(41)(49)(29)(20)— — (4)
Credit Loss Expense79 32 38 17 21 2 2 5 
Other Adjustments30 23 16 16 (1)30 9 — 
Balance at September 30, 2024$214 $70 $79 $48 $31 $41 $16 $9 
Balance at December 31, 2024$207 $69 $73 $44 $29 $43 $15 $7 
Write-Offs(115)(39)(44)(28)(16)(10)(8)(14)
Credit Loss Expense73 18 28 13 15 4 10 13 
Other Adjustments34 8 10 10 — 14 — 2 
Balance at September 30, 2025$199 $56 $67 $39 $28 $51 $17 $8 
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 periodically for trade and other receivables.