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Revenue
9 Months Ended
Sep. 30, 2023
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:
Remaining Performance Obligations
(in millions)20232024202520262027ThereafterTotal
Progress Energy$15 $70 $$$$36 $142 
Duke Energy Progress2 — — — — 10 
Duke Energy Florida13 62 36 132 
Duke Energy Indiana4 16 17 15 64 
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 are as follows:
Remaining Performance Obligations
(in millions)20232024202520262027ThereafterTotal
Piedmont$17 $62 $61 $51 $49 $241 $481 
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, 2023
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$3,602 $988 $2,043 $756 $1,287 $268 $303 $ 
   General2,229 779 1,089 467 622 135 224  
   Industrial912 395 298 203 95 28 190  
   Wholesale647 141 422 364 58 12 71  
   Other revenues285 75 175 100 75 24 56  
Total Electric Utilities and Infrastructure revenue from contracts with customers$7,675 $2,378 $4,027 $1,890 $2,137 $467 $844 $ 
Gas Utilities and Infrastructure
   Residential$152 $ $ $ $ $73 $ $80 
   Commercial88     24  65 
   Industrial26     4  23 
   Power Generation       23 
   Other revenues28     4  8 
Total Gas Utilities and Infrastructure revenue from contracts with customers$294 $ $ $ $ $105 $ $199 
Other
Revenue from contracts with customers$8 $ $ $ $ $ $ $ 
Total revenue from contracts with customers$7,977 $2,378 $4,027 $1,890 $2,137 $572 $844 $199 
Other revenue sources(a)
$17 $15 $28 $(4)$27 $5 $7 $9 
Total revenues$7,994 $2,393 $4,055 $1,886 $2,164 $577 $851 $208 
Three Months Ended September 30, 2022
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$3,250 $887 $1,719 $670 $1,049 $249 $396 $— 
   General2,077 686 947 419 528 150 291 — 
   Industrial986 366 298 216 82 62 260 — 
   Wholesale874 140 588 403 185 32 115 — 
   Other revenues248 105 317 259 58 15 19 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$7,435 $2,184 $3,869 $1,967 $1,902 $508 $1,081 $— 
Gas Utilities and Infrastructure
   Residential$167 $— $— $— $— $88 $— $79 
   Commercial108 — — — — 26 — 82 
   Industrial34 — — — — — 30 
   Power Generation— — — — — — — 24 
   Other revenues103 — — — — — 83 
Total Gas Utilities and Infrastructure revenue from contracts with customers$412 $— $— $— $— $122 $— $298 
Other
Revenue from contracts with customers$$— $— $— $— $— $— $— 
Total revenue from contracts with customers$7,853 $2,184 $3,869 $1,967 $1,902 $630 $1,081 $298 
Other revenue sources(a)
$(11)$(9)$12 $$$(2)$14 $
Total revenues$7,842 $2,175 $3,881 $1,969 $1,907 $628 $1,095 $306 
(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.
Nine Months Ended September 30, 2023
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$9,193 $2,527 $5,019 $1,902 $3,117 $710 $937 $ 
   General5,936 1,974 2,844 1,194 1,650 411 706  
   Industrial2,630 1,011 844 560 284 155 618  
   Wholesale1,695 402 1,064 942 122 33 195  
   Other revenues618 202 440 238 202 73 103  
Total Electric Utilities and Infrastructure revenue from contracts with customers$20,072 $6,116 $10,211 $4,836 $5,375 $1,382 $2,559 $ 
Gas Utilities and Infrastructure
   Residential$838 $ $ $ $ $317 $ $522 
   Commercial421     113  309 
   Industrial103     19  84 
   Power Generation       69 
   Other revenues93     15  32 
Total Gas Utilities and Infrastructure revenue from contracts with customers$1,455 $ $ $ $ $464 $ $1,016 
Other
Revenue from contracts with customers$24 $ $ $ $ $ $ $ 
Total Revenue from contracts with customers$21,551 $6,116 $10,211 $4,836 $5,375 $1,846 $2,559 $1,016 
Other revenue sources(a)
$297 $39 $104 $8 $81 $29 $47 $103 
Total revenues$21,848 $6,155 $10,315 $4,844 $5,456 $1,875 $2,606 $1,119 
(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.
Nine Months Ended September 30, 2022
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$8,642 $2,454 $4,487 $1,824 $2,663 $656 $1,046 $— 
   General5,498 1,796 2,562 1,114 1,448 377 760 — 
   Industrial2,582 938 842 594 248 130 672 — 
   Wholesale2,129 356 1,388 1,033 355 90 296 — 
   Other revenues652 308 775 608 167 56 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$19,503 $5,852 $10,054 $5,173 $4,881 $1,309 $2,780 $— 
Gas Utilities and Infrastructure
   Residential$936 $— $— $— $— $331 $— $605 
   Commercial504 — — — — 128 — 376 
   Industrial125 — — — — 17 — 108 
   Power Generation— — — — — — — 71 
   Other revenues284 — — — — 16 — 220 
Total Gas Utilities and Infrastructure revenue from contracts with customers$1,849 $— $— $— $— $492 $— $1,380 
Other
Revenue from contracts with customers$21 $— $— $— $— $— $— $— 
Total Revenue from contracts with customers$21,373 $5,852 $10,054 $5,173 $4,881 $1,801 $2,780 $1,380 
Other revenue sources(a)
$44 $(8)$33 $$$10 $55 $41 
Total revenues$21,417 $5,844 $10,087 $5,182 $4,890 $1,811 $2,835 $1,421 
(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, 2022 and 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at June 30, 2022$135 $52 $52 $31 $21 $$$15 
Write-Offs(49)(19)(26)(11)(15)— — (4)
Credit Loss Expense37 10 20 15 
Other Adjustments51 19 21 16 — — — 
Balance at September 30, 2022$174 $62 $67 $41 $26 $$$14 
Balance at June 30, 2023$199 $57 $73 $43 $30 $$$13 
Write-Offs(36)(14)(20)(11)(8)  (5)
Credit Loss Expense23 5 15 2 13  1 2 
Other Adjustments17 8 9 10 (1)   
Balance at September 30, 2023$203 $56 $77 $44 $34 $8 $5 $10 
Nine Months Ended September 30, 2022 and 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2021$121 $42 $36 $21 $16 $$$15 
Write-Offs(103)(44)(45)(18)(28)— — (10)
Credit Loss Expense81 23 39 11 28 
Other Adjustments75 41 37 27 10 — — — 
Balance at September 30, 2022$174 $62 $67 $41 $26 $$$14 
Balance at December 31, 2022$216 $68 $81 $44 $36 $$$14 
Write-Offs(121)(54)(60)(30)(28)  (11)
Credit Loss Expense62 18 33 7 26 2 1 7 
Other Adjustments46 24 23 23     
Balance at September 30, 2023$203 $56 $77 $44 $34 $8 $5 $10 
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.
The aging of trade receivables is presented in the table below.
September 30, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unbilled Revenue(a)(b)
$977 $356 $333 $206 $127 $2 $27 $8 
Current2,538 795 1,233 658 573 55 54 83 
1-31 days past due258 71 121 44 77 5 10 5 
31-61 days past due114 31 57 38 19 2 5 5 
61-91 days past due53 19 21 7 14 1 2 3 
91+ days past due234 60 71 24 47 37 24 5 
Deferred Payment Arrangements(c)
104 31 50 27 23 3   
Trade and Other Receivables$4,278 $1,363 $1,886 $1,004 $880 $105 $122 $109 
December 31, 2022
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unbilled Revenue(a)(b)
$1,457 $486 $355 $232 $123 $20 $28 $160 
Current2,347 577 1,059 637 417 15 52 265 
1-31 days past due261 96 60 15 45 17 15 
31-61 days past due123 23 61 49 12 
61-91 days past due74 25 18 11 
91+ days past due209 70 74 27 47 26 
Deferred Payment Arrangements(c)
160 57 62 35 27 — 
Trade and Other Receivables$4,631 $1,334 $1,689 $1,004 $680 $79 $116 $450 
(a)Unbilled revenues are recognized by applying customer billing rates to the estimated volumes of energy or natural gas delivered but not yet billed and are included within Receivables and Receivables of VIEs on the Condensed Consolidated Balance Sheets.
(b)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 13 for further information. These receivables for unbilled revenues are $95 million and $156 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of September 30, 2023, and $148 million and $260 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of December 31, 2022.
(c)Due to ongoing financial hardships impacting customers, Duke Energy has permitted customers to defer payment of past-due amounts through installment payment plans.