| 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) | 2025 | 2026 | 2027 | 2028 | 2029 | Thereafter | Total | | Duke Energy Carolinas | $ | 6 | | $ | 12 | | $ | 12 | | $ | 12 | | $ | — | | $ | — | | $ | 42 | | | Progress Energy | 17 | | 43 | | 13 | | 13 | | 13 | | 42 | | 141 | | | Duke Energy Progress | 3 | | 6 | | 6 | | 6 | | 6 | | 20 | | 47 | | | Duke Energy Florida | 14 | | 37 | | 7 | | 7 | | 7 | | 22 | | 94 | | | | | | | | | | | Duke Energy Indiana | 8 | | 17 | | 15 | | 6 | | — | | — | | 46 | |
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) | 2025 | 2026 | 2027 | 2028 | 2029 | Thereafter | Total | | | | | | | | | | Piedmont | $ | 32 | | $ | 51 | | $ | 49 | | $ | 46 | | $ | 44 | | $ | 151 | | $ | 373 | |
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 June 30, 2025 | | | 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 | $ | 3,242 | | $ | 919 | | $ | 1,753 | | $ | 663 | | $ | 1,089 | | $ | 253 | | $ | 316 | | $ | — | | Commercial | 2,053 | | 693 | | 966 | | 426 | | 538 | | 147 | | 245 | | — | | | Industrial | 850 | | 355 | | 264 | | 179 | | 82 | | 36 | | 196 | | — | | | Wholesale | 523 | | 132 | | 328 | | 294 | | 33 | | 19 | | 44 | | — | | | Other revenues | 262 | | 96 | | 221 | | 111 | | 117 | | 18 | | 9 | | — | | | Total Electric Utilities and Infrastructure revenue from contracts with customers | $ | 6,930 | | $ | 2,195 | | $ | 3,532 | | $ | 1,673 | | $ | 1,859 | | $ | 473 | | $ | 810 | | $ | — | | | | | | | | | | | | Gas Utilities and Infrastructure | | | | | | | | | | Residential | $ | 189 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | 100 | | $ | — | | $ | 89 | | | Commercial | 136 | | — | | — | | — | | — | | 37 | | — | | 99 | | | Industrial | 41 | | — | | — | | — | | — | | 9 | | — | | 32 | | | Power Generation | — | | — | | — | | — | | — | | — | | — | | 23 | | | Other revenues | 70 | | — | | — | | — | | — | | 8 | | — | | 47 | | | Total Gas Utilities and Infrastructure revenue from contracts with customers | $ | 436 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | 154 | | $ | — | | $ | 290 | | | | | | | | | | | Other | | | | | | | | | | Revenue from contracts with customers | $ | 7 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | | Total revenue from contracts with customers | $ | 7,373 | | $ | 2,195 | | $ | 3,532 | | $ | 1,673 | | $ | 1,859 | | $ | 627 | | $ | 810 | | $ | 290 | | | | | | | | | | | Other revenue sources(a) | $ | 135 | | $ | 36 | | $ | 37 | | $ | 8 | | $ | 26 | | $ | 27 | | $ | 11 | | $ | 45 | | | Total revenues | $ | 7,508 | | $ | 2,231 | | $ | 3,569 | | $ | 1,681 | | $ | 1,885 | | $ | 654 | | $ | 821 | | $ | 335 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2024 | | | 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 | $ | 3,092 | | $ | 959 | | $ | 1,625 | | $ | 661 | | $ | 964 | | $ | 240 | | $ | 269 | | $ | — | | Commercial | 2,013 | | 755 | | 933 | | 427 | | 506 | | 144 | | 180 | | — | | | Industrial | 869 | | 374 | | 267 | | 183 | | 84 | | 39 | | 190 | | — | | | Wholesale | 524 | | 127 | | 337 | | 298 | | 39 | | 10 | | 49 | | — | | | Other revenues | 293 | | 99 | | 187 | | 91 | | 96 | | 18 | | 39 | | — | | | Total Electric Utilities and Infrastructure revenue from contracts with customers | $ | 6,791 | | $ | 2,314 | | $ | 3,349 | | $ | 1,660 | | $ | 1,689 | | $ | 451 | | $ | 727 | | $ | — | | | | | | | | | | | | Gas Utilities and Infrastructure | | | | | | | | | | Residential | $ | 182 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | 86 | | $ | — | | $ | 96 | | | Commercial | 103 | | — | | — | | — | | — | | 31 | | — | | 72 | | | Industrial | 32 | | — | | — | | — | | — | | 6 | | — | | 24 | | | Power Generation | — | | — | | — | | — | | — | | — | | — | | 8 | | | Other revenues | 32 | | — | | — | | — | | — | | 9 | | — | | 23 | | | Total Gas Utilities and Infrastructure revenue from contracts with customers | $ | 349 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | 132 | | $ | — | | $ | 223 | | | | | | | | | | | Other | | | | | | | | | | Revenue from contracts with customers | $ | 11 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | | Total revenue from contracts with customers | $ | 7,151 | | $ | 2,314 | | $ | 3,349 | | $ | 1,660 | | $ | 1,689 | | $ | 583 | | $ | 727 | | $ | 223 | | | | | | | | | | | Other revenue sources(a) | $ | 21 | | $ | (17) | | $ | 8 | | $ | (24) | | $ | 27 | | $ | 25 | | $ | 20 | | $ | 21 | | | Total revenues | $ | 7,172 | | $ | 2,297 | | $ | 3,357 | | $ | 1,636 | | $ | 1,716 | | $ | 608 | | $ | 747 | | $ | 244 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | | 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 | $ | 6,645 | | $ | 2,046 | | $ | 3,366 | | $ | 1,483 | | $ | 1,883 | | $ | 535 | | $ | 695 | | $ | — | | Commercial | 3,974 | | 1,394 | | 1,809 | | 841 | | 968 | | 289 | | 478 | | — | | | Industrial | 1,673 | | 689 | | 528 | | 372 | | 156 | | 69 | | 383 | | — | | | Wholesale | 1,193 | | 281 | | 770 | | 698 | | 72 | | 41 | | 101 | | — | | | Other revenues | 498 | | 276 | | 467 | | 274 | | 193 | | 36 | | 8 | | — | | | Total Electric Utilities and Infrastructure revenue from contracts with customers | $ | 13,983 | | $ | 4,686 | | $ | 6,940 | | $ | 3,668 | | $ | 3,272 | | $ | 970 | | $ | 1,665 | | $ | — | | | | | | | | | | | | Gas Utilities and Infrastructure | | | | | | | | | | Residential | $ | 895 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | 286 | | $ | — | | $ | 609 | | | Commercial | 458 | | — | | — | | — | | — | | 107 | | — | | 351 | | | Industrial | 96 | | — | | — | | — | | — | | 25 | | — | | 71 | | | Power Generation | — | | — | | — | | — | | — | | — | | — | | 47 | | | Other revenues | 144 | | — | | — | | — | | — | | 14 | | — | | 100 | | | Total Gas Utilities and Infrastructure revenue from contracts with customers | $ | 1,593 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | 432 | | $ | — | | $ | 1,178 | | | | | | | | | | | | Other | | | | | | | | | | Revenue from contracts with customers | $ | 15 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | | Total Revenue from contracts with customers | $ | 15,591 | | $ | 4,686 | | $ | 6,940 | | $ | 3,668 | | $ | 3,272 | | $ | 1,402 | | $ | 1,665 | | $ | 1,178 | | | | | | | | | | | Other revenue sources(a) | $ | 166 | | $ | 69 | | $ | 96 | | $ | 31 | | $ | 57 | | $ | 18 | | $ | 14 | | $ | 14 | | Total operating revenues | $ | 15,757 | | $ | 4,755 | | $ | 7,036 | | $ | 3,699 | | $ | 3,329 | | $ | 1,420 | | $ | 1,679 | | $ | 1,192 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2024 | | | 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 | $ | 6,207 | | $ | 2,017 | | $ | 3,142 | | $ | 1,403 | | $ | 1,739 | | $ | 493 | | $ | 556 | | $ | — | | Commercial | 3,947 | | 1,472 | | 1,799 | | 849 | | 950 | | 296 | | 381 | | — | | | Industrial | 1,691 | | 714 | | 533 | | 360 | | 173 | | 71 | | 373 | | — | | | Wholesale | 1,078 | | 265 | | 692 | | 624 | | 68 | | 24 | | 97 | | — | | | Other revenues | 546 | | 198 | | 336 | | 169 | | 167 | | 40 | | 73 | | — | | | Total Electric Utilities and Infrastructure revenue from contracts with customers | $ | 13,469 | | $ | 4,666 | | $ | 6,502 | | $ | 3,405 | | $ | 3,097 | | $ | 924 | | $ | 1,480 | | $ | — | | | | | | | | | | | | Gas Utilities and Infrastructure | | | | | | | | | | Residential | $ | 702 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | 233 | | $ | — | | $ | 469 | | | Commercial | 343 | | — | | — | | — | | — | | 88 | | — | | 255 | | | Industrial | 79 | | — | | — | | — | | — | | 17 | | — | | 62 | | | Power Generation | — | | — | | — | | — | | — | | — | | — | | 16 | | | Other revenues | 72 | | — | | — | | — | | — | | 14 | | — | | 58 | | | Total Gas Utilities and Infrastructure revenue from contracts with customers | $ | 1,196 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | 352 | | $ | — | | $ | 860 | | | | | | | | | | | | Other | | | | | | | | | | Revenue from contracts with customers | $ | 18 | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | $ | — | | | Total Revenue from contracts with customers | $ | 14,683 | | $ | 4,666 | | $ | 6,502 | | $ | 3,405 | | $ | 3,097 | | $ | 1,276 | | $ | 1,480 | | $ | 860 | | | | | | | | | | | Other revenue sources(a) | $ | 160 | | $ | 38 | | $ | 83 | | $ | 19 | | $ | 55 | | $ | 10 | | $ | 26 | | $ | 60 | | Total operating revenues | $ | 14,843 | | $ | 4,704 | | $ | 6,585 | | $ | 3,424 | | $ | 3,152 | | $ | 1,286 | | $ | 1,506 | | $ | 920 | |
The following table presents the reserve for credit losses for trade and other receivables. | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2024 and 2025 | | | Duke | | Duke | Duke | Duke | Duke | | | Duke | Energy | Progress | Energy | Energy | Energy | Energy | | | (in millions) | Energy | Carolinas | Energy | Progress | Florida | Ohio | Indiana | Piedmont | | Balance at March 31, 2024 | $ | 204 | | $ | 62 | | $ | 73 | | $ | 47 | | $ | 27 | | $ | 41 | | $ | 16 | | $ | 12 | | | Write-Offs | (36) | | (16) | | (17) | | (12) | | (5) | | — | | — | | (3) | | | Credit Loss Expense | 35 | | 10 | | 11 | | 6 | | 5 | | 1 | | — | | 2 | | | Other Adjustments | 4 | | 9 | | 6 | | 6 | | (1) | | — | | — | | — | | | Balance at June 30, 2024 | $ | 207 | | $ | 65 | | $ | 73 | | $ | 47 | | $ | 26 | | $ | 42 | | $ | 16 | | $ | 11 | | | | | | | | | | | | Balance at March 31, 2025 | $ | 204 | | $ | 64 | | $ | 67 | | $ | 42 | | $ | 25 | | $ | 46 | | $ | 17 | | $ | 10 | | | Write-Offs | (46) | | (12) | | (14) | | (10) | | (4) | | (8) | | (4) | | (8) | | | Credit Loss Expense | 32 | | 5 | | 10 | | 3 | | 7 | | — | | 6 | | 11 | | | Other Adjustments | 9 | | — | | 7 | | 7 | | — | | 3 | | (2) | | 1 | | | Balance at June 30, 2025 | $ | 199 | | $ | 57 | | $ | 70 | | $ | 42 | | $ | 28 | | $ | 41 | | $ | 17 | | $ | 14 | | | | | | | | | | | | Six Months Ended June 30, 2024 and 2025 | | | 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, 2023 | $ | 205 | | $ | 56 | | $ | 74 | | $ | 44 | | $ | 31 | | $ | 9 | | $ | 5 | | $ | 11 | | | Write-Offs | (68) | | (28) | | (33) | | (19) | | (14) | | — | | — | | (4) | | | Credit Loss Expense | 45 | | 17 | | 20 | | 10 | | 10 | | 2 | | 2 | | 4 | | | Other Adjustments | 25 | | 20 | | 12 | | 12 | | (1) | | 31 | | 9 | | — | | | Balance at June 30, 2024 | $ | 207 | | $ | 65 | | $ | 73 | | $ | 47 | | $ | 26 | | $ | 42 | | $ | 16 | | $ | 11 | | | | | | | | | | | | Balance at December 31, 2024 | $ | 209 | | $ | 69 | | $ | 73 | | $ | 44 | | $ | 29 | | $ | 43 | | $ | 15 | | $ | 10 | | | Write-Offs | (75) | | (26) | | (29) | | (18) | | (11) | | (8) | | (4) | | (8) | | | Credit Loss Expense | 46 | | 10 | | 18 | | 8 | | 10 | | 1 | | 6 | | 11 | | | Other Adjustments | 19 | | 4 | | 8 | | 8 | | — | | 5 | | — | | 1 | | | Balance at June 30, 2025 | $ | 199 | | $ | 57 | | $ | 70 | | $ | 42 | | $ | 28 | | $ | 41 | | $ | 17 | | $ | 14 | |
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.
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