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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2020
Public Utilities, General Disclosures [Line Items] |
Schedule of Regulatory Assets | The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant.
| Duke Energy |  | Progress Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |
| December 31, |  | December 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |
(in millions) | 2020 |  | 2019 |  | 2020 |  | 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AROs – coal ash | $ | 3,408 |  |  | $ | 4,084 |  |  | $ | 1,357 |  |  | $ | 1,843 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AROs – nuclear and other | 754 |  |  | 739 |  |  | 685 |  |  | 668 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued pension and OPEB | 2,317 |  |  | 2,391 |  |  | 875 |  |  | 897 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Storm cost deferrals | 1,102 |  |  | 1,399 |  |  | 893 |  |  | 1,214 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nuclear asset securitized balance, net | 991 |  |  | 1,042 |  |  | 991 |  |  | 1,042 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt fair value adjustment | 950 |  |  | 1,019 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retired generation facilities | 417 |  |  | 331 |  |  | 363 |  |  | 266 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Post-in-service carrying costs (PISCC) and deferred operating expenses | 402 |  |  | 329 |  |  | 51 |  |  | 33 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred asset – Lee and Harris COLA | 356 |  |  | 388 |  |  | 32 |  |  | 38 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hedge costs deferrals | 351 |  |  | 356 |  |  | 148 |  |  | 129 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advanced metering infrastructure (AMI) | 311 |  |  | 338 |  |  | 102 |  |  | 114 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand side management (DSM)/Energy Efficiency (EE) | 288 |  |  | 343 |  |  | 241 |  |  | 241 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vacation accrual | 221 |  |  | 214 |  |  | 42 |  |  | 41 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred fuel and purchased power | 213 |  |  | 528 |  |  | 162 |  |  | 305 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
COR settlement | 128 |  |  | 133 |  |  | 33 |  |  | 35 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NCEMPA deferrals | 124 |  |  | 72 |  |  | 124 |  |  | 72 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nuclear deferral | 123 |  |  | 107 |  |  | 35 |  |  | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives – natural gas supply contracts | 122 |  |  | 117 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CEP deferral | 117 |  |  | 76 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts due from customers | 110 |  |  | 36 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Qualifying facility contract buyouts | 107 |  |  | 121 |  |  | 107 |  |  | 121 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer connect project | 105 |  |  | 65 |  |  | 55 |  |  | 37 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Manufactured gas plant (MGP) | 104 |  |  | 102 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ABSAT, coal ash basin closure | 98 |  |  | 65 |  |  | 27 |  |  | 15 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred pipeline integrity costs | 92 |  |  | 79 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred severance charges | 86 |  |  | — |  |  | 29 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental COVID-19 expenses | 76 |  |  | — |  |  | 23 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other | 589 |  |  | 544 |  |  | 158 |  |  | 141 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total regulatory assets | 14,062 |  |  | 15,018 |  |  | 6,533 |  |  | 7,292 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less: current portion | 1,641 |  |  | 1,796 |  |  | 758 |  |  | 946 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total noncurrent regulatory assets | $ | 12,421 |  |  | $ | 13,222 |  |  | $ | 5,775 |  |  | $ | 6,346 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net regulatory liability related to income taxes | $ | 7,368 |  |  | $ | 7,872 |  |  | $ | 2,411 |  |  | $ | 2,595 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Costs of removal | 5,883 |  |  | 5,756 |  |  | 2,666 |  |  | 2,561 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AROs – nuclear and other | 1,512 |  |  | 1,100 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for rate refunds | 344 |  |  | 370 |  |  | 123 |  |  | 123 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued pension and OPEB | 177 |  |  | 176 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts to be refunded to customers | 51 |  |  | 34 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred fuel and purchased power | 18 |  |  | 1 |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other | 1,053 |  |  | 739 |  |  | 491 |  |  | 275 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total regulatory liabilities | 16,406 |  |  | 16,048 |  |  | 5,691 |  |  | 5,555 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less: current portion | 1,377 |  |  | 784 |  |  | 640 |  |  | 330 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total noncurrent regulatory liabilities | $ | 15,029 |  |  | $ | 15,264 |  |  | $ | 5,051 |  |  | $ | 5,225 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule Of Regulatory Liabilities | The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant.
| Duke Energy |  | Progress Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |
| December 31, |  | December 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |
(in millions) | 2020 |  | 2019 |  | 2020 |  | 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AROs – coal ash | $ | 3,408 |  |  | $ | 4,084 |  |  | $ | 1,357 |  |  | $ | 1,843 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AROs – nuclear and other | 754 |  |  | 739 |  |  | 685 |  |  | 668 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued pension and OPEB | 2,317 |  |  | 2,391 |  |  | 875 |  |  | 897 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Storm cost deferrals | 1,102 |  |  | 1,399 |  |  | 893 |  |  | 1,214 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nuclear asset securitized balance, net | 991 |  |  | 1,042 |  |  | 991 |  |  | 1,042 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt fair value adjustment | 950 |  |  | 1,019 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retired generation facilities | 417 |  |  | 331 |  |  | 363 |  |  | 266 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Post-in-service carrying costs (PISCC) and deferred operating expenses | 402 |  |  | 329 |  |  | 51 |  |  | 33 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred asset – Lee and Harris COLA | 356 |  |  | 388 |  |  | 32 |  |  | 38 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hedge costs deferrals | 351 |  |  | 356 |  |  | 148 |  |  | 129 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advanced metering infrastructure (AMI) | 311 |  |  | 338 |  |  | 102 |  |  | 114 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand side management (DSM)/Energy Efficiency (EE) | 288 |  |  | 343 |  |  | 241 |  |  | 241 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vacation accrual | 221 |  |  | 214 |  |  | 42 |  |  | 41 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred fuel and purchased power | 213 |  |  | 528 |  |  | 162 |  |  | 305 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
COR settlement | 128 |  |  | 133 |  |  | 33 |  |  | 35 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NCEMPA deferrals | 124 |  |  | 72 |  |  | 124 |  |  | 72 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nuclear deferral | 123 |  |  | 107 |  |  | 35 |  |  | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives – natural gas supply contracts | 122 |  |  | 117 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CEP deferral | 117 |  |  | 76 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts due from customers | 110 |  |  | 36 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Qualifying facility contract buyouts | 107 |  |  | 121 |  |  | 107 |  |  | 121 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer connect project | 105 |  |  | 65 |  |  | 55 |  |  | 37 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Manufactured gas plant (MGP) | 104 |  |  | 102 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ABSAT, coal ash basin closure | 98 |  |  | 65 |  |  | 27 |  |  | 15 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred pipeline integrity costs | 92 |  |  | 79 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred severance charges | 86 |  |  | — |  |  | 29 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental COVID-19 expenses | 76 |  |  | — |  |  | 23 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other | 589 |  |  | 544 |  |  | 158 |  |  | 141 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total regulatory assets | 14,062 |  |  | 15,018 |  |  | 6,533 |  |  | 7,292 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less: current portion | 1,641 |  |  | 1,796 |  |  | 758 |  |  | 946 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total noncurrent regulatory assets | $ | 12,421 |  |  | $ | 13,222 |  |  | $ | 5,775 |  |  | $ | 6,346 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net regulatory liability related to income taxes | $ | 7,368 |  |  | $ | 7,872 |  |  | $ | 2,411 |  |  | $ | 2,595 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Costs of removal | 5,883 |  |  | 5,756 |  |  | 2,666 |  |  | 2,561 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AROs – nuclear and other | 1,512 |  |  | 1,100 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for rate refunds | 344 |  |  | 370 |  |  | 123 |  |  | 123 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued pension and OPEB | 177 |  |  | 176 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts to be refunded to customers | 51 |  |  | 34 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred fuel and purchased power | 18 |  |  | 1 |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other | 1,053 |  |  | 739 |  |  | 491 |  |  | 275 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total regulatory liabilities | 16,406 |  |  | 16,048 |  |  | 5,691 |  |  | 5,555 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less: current portion | 1,377 |  |  | 784 |  |  | 640 |  |  | 330 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total noncurrent regulatory liabilities | $ | 15,029 |  |  | $ | 15,264 |  |  | $ | 5,051 |  |  | $ | 5,225 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Potential Plant Retirements | The table below contains the net carrying value of generating facilities planned for retirement or included in recent IRPs as evaluated for potential retirement. Dollar amounts in the table below are included in Net property, plant and equipment on the Consolidated Balance Sheets as of December 31, 2020, and exclude capitalized asset retirement costs.
|  |  |  |  |  |  |  |  | Remaining Net |  |  |  |
| Capacity |  |  |  |  |  |  |  | Book Value |  |  |  |
| (in MW) |  |  |  |  |  |  |  | (in millions) |  |  |  |
Duke Energy Carolinas |  |  |  |  |  |  |  |  |  |  |  |  |
Allen Steam Station Units 1-3(a) | 604 |  |  |  |  |  |  |  |  | $ | 113 |  |  |  |  |
Allen Steam Station Units 4-5(b) | 526 |  |  |  |  |  |  |  |  | 338 |  |  |  |  |
Cliffside Unit 5(b) | 546 |  |  |  |  |  |  |  |  | 350 |  |  |  |  |
Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |
Mayo Unit 1(b) | 746 |  |  |  |  |  |  |  |  | 676 |  |  |  |  |
Roxboro Units 3-4(b) | 1,409 |  |  |  |  |  |  |  |  | 484 |  |  |  |  |
Duke Energy Florida |  |  |  |  |  |  |  |  |  |  |  |  |
Crystal River Units 4-5(c) | 1,430 |  |  |  |  |  |  |  |  | 1,696 |  |  |  |  |
Duke Energy Indiana |  |  |  |  |  |  |  |  |  |  |  |  |
Gallagher Units 2 and 4(d) | 280 |  |  |  |  |  |  |  |  | 102 |  |  |  |  |
Gibson Units 1-5(e) | 2,845 |  |  |  |  |  |  |  |  | 1,866 |  |  |  |  |
Cayuga Units 1-2(e) | 1,005 |  |  |  |  |  |  |  |  | 777 |  |  |  |  |
Total Duke Energy | 9,391 |  |  |  |  |  |  |  |  | $ | 6,402 |  |  |  |  |
(a) As part of the 2015 resolution of a lawsuit involving alleged New Source Review violations, Duke Energy Carolinas must retire Allen Steam Station Units 1 through 3 by December 31, 2024. The long-term energy options considered in the IRP could result in retirement of these units earlier than their current estimated useful lives. Unit 3 with a capacity of 270 MW and a net book value of $26 million at December 31, 2020, is expected to be retired in March 2021. (b) These units are included in the IRP filed by Duke Energy Carolinas and Duke Energy Progress in North Carolina and South Carolina on September 1, 2020. The long-term energy options considered in the IRP could result in retirement of these units earlier than their current estimated useful lives. In 2019, Duke Energy Carolinas and Duke Energy Progress filed North Carolina rate cases that included depreciation studies that accelerate end-of-life dates for these plants. A decision by NCUC is expected by the end of the first quarter 2021. (c) On January 14, 2021, Duke Energy Florida filed a settlement agreement with the FPSC, which proposed depreciation rates reflecting retirement dates for Duke Energy Florida's last two coal-fired generating facilities, Crystal River Units 4-5, eight years ahead of schedule in 2034 rather than in 2042, in support of Duke Energy's carbon reduction goals. A request for the FPSC to hold a hearing has been made and a decision by the FPSC is expected in the second quarter 2021. (d) Duke Energy Indiana committed to either retire or stop burning coal at Gallagher Units 2 and 4 by December 31, 2022, as part of the 2016 settlement of Edwardsport IGCC matters. In February 2021, upon approval by MISO of a new retirement date, Duke Energy Indiana determined it would modify the retirement date to June 1, 2021. (e) On July 1, 2019, Duke Energy Indiana filed its 2018 IRP with the IURC. The 2018 IRP included scenarios evaluating the potential retirement of coal-fired generating units at Gibson and Cayuga. The rate case filed July 2, 2019, included proposed depreciation rates reflecting retirement dates from 2026 to 2038. The depreciation rates reflecting these updated retirement dates were approved by the IURC as part of the rate case order issued on June 29, 2020.
Duke Energy Carolinas |
Public Utilities, General Disclosures [Line Items] |
Schedule of Regulatory Assets | The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas' Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 1,414 |  | $ | 1,696 |  |  | (h) | (b)
Accrued pension and OPEB(c) | 427 |  | 477 |  |  | Yes | (i)
Storm cost deferrals | 205 |  | 178 |  |  | Yes | (b)
Retired generation facilities(c) | 11 |  | 16 |  |  | Yes | 2023
PISCC(c) | 32 |  | 33 |  |  | Yes | (b)
Deferred asset – Lee COLA | 324 |  | 350 |  |  |  | (b)
Hedge costs deferrals(c) | 174 |  | 198 |  |  | Yes | 2041
AMI | 154 |  | 166 |  |  | Yes | (b)
DSM/EE | 46 |  | 100 |  |  | (g) | (g)
Vacation accrual | 84 |  | 80 |  |  |  | 2021
Deferred fuel and purchased power | 42 |  | 222 |  |  | (e) | 2022
COR settlement | 95 |  | 98 |  |  | Yes | (b)
Nuclear deferral | 88 |  | 67 |  |  |  | 2022
Customer connect project | 50 |  | 28 |  |  | Yes | (b)
ABSAT, coal ash basin closure | 71 |  | 50 |  |  | Yes | (b)
Deferred severance charges | 57 |  | — |  |  |  | 2022
Incremental COVID-19 expenses | 31 |  | — |  |  | Yes | (b)
Other | 164 |  | 151 |  |  |  | (b)
Total regulatory assets | 3,469 |  | 3,910 |  |  |  |
Less: current portion | 473 |  | 550 |  |  |  |
Total noncurrent regulatory assets | $ | 2,996 |  | $ | 3,360 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(d) | $ | 2,874 |  | $ | 3,060 |  |  |  | (b)
Costs of removal(c) | 1,975 |  | 1,936 |  |  | Yes | (f)
AROs – nuclear and other | 1,512 |  | 1,100 |  |  |  | (b)
Provision for rate refunds(c) | 170 |  | 175 |  |  | Yes |
Accrued pension and OPEB(c) | 32 |  | 39 |  |  | Yes | (i)
Deferred fuel and purchased power | 18 |  | — |  |  | (e) | 2020
Other | 427 |  | 368 |  |  |  | (b)
Total regulatory liabilities | 7,008 |  | 6,678 |  |  |  |
Less: current portion | 473 |  | 255 |  |  |  |
Total noncurrent regulatory liabilities | $ | 6,535 |  | $ | 6,423 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate, both discussed in Note 23. Portions are included in rate base. (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. (f) Recovered over the life of the associated assets. (g) Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism. (h) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (i) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Schedule Of Regulatory Liabilities | The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas' Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 1,414 |  | $ | 1,696 |  |  | (h) | (b)
Accrued pension and OPEB(c) | 427 |  | 477 |  |  | Yes | (i)
Storm cost deferrals | 205 |  | 178 |  |  | Yes | (b)
Retired generation facilities(c) | 11 |  | 16 |  |  | Yes | 2023
PISCC(c) | 32 |  | 33 |  |  | Yes | (b)
Deferred asset – Lee COLA | 324 |  | 350 |  |  |  | (b)
Hedge costs deferrals(c) | 174 |  | 198 |  |  | Yes | 2041
AMI | 154 |  | 166 |  |  | Yes | (b)
DSM/EE | 46 |  | 100 |  |  | (g) | (g)
Vacation accrual | 84 |  | 80 |  |  |  | 2021
Deferred fuel and purchased power | 42 |  | 222 |  |  | (e) | 2022
COR settlement | 95 |  | 98 |  |  | Yes | (b)
Nuclear deferral | 88 |  | 67 |  |  |  | 2022
Customer connect project | 50 |  | 28 |  |  | Yes | (b)
ABSAT, coal ash basin closure | 71 |  | 50 |  |  | Yes | (b)
Deferred severance charges | 57 |  | — |  |  |  | 2022
Incremental COVID-19 expenses | 31 |  | — |  |  | Yes | (b)
Other | 164 |  | 151 |  |  |  | (b)
Total regulatory assets | 3,469 |  | 3,910 |  |  |  |
Less: current portion | 473 |  | 550 |  |  |  |
Total noncurrent regulatory assets | $ | 2,996 |  | $ | 3,360 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(d) | $ | 2,874 |  | $ | 3,060 |  |  |  | (b)
Costs of removal(c) | 1,975 |  | 1,936 |  |  | Yes | (f)
AROs – nuclear and other | 1,512 |  | 1,100 |  |  |  | (b)
Provision for rate refunds(c) | 170 |  | 175 |  |  | Yes |
Accrued pension and OPEB(c) | 32 |  | 39 |  |  | Yes | (i)
Deferred fuel and purchased power | 18 |  | — |  |  | (e) | 2020
Other | 427 |  | 368 |  |  |  | (b)
Total regulatory liabilities | 7,008 |  | 6,678 |  |  |  |
Less: current portion | 473 |  | 255 |  |  |  |
Total noncurrent regulatory liabilities | $ | 6,535 |  | $ | 6,423 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate, both discussed in Note 23. Portions are included in rate base. (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. (f) Recovered over the life of the associated assets. (g) Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism. (h) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (i) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Duke Energy Progress |
Public Utilities, General Disclosures [Line Items] |
Schedule of Regulatory Assets | The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress' Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 1,347 |  | $ | 1,834 |  |  | (h) | (b)
AROs – nuclear and other | 683 |  | 509 |  |  |  | (c)
Accrued pension and OPEB | 393 |  | 423 |  |  |  | (k)
Storm cost deferrals(d) | 785 |  | 801 |  |  | Yes | (b)
Retired generation facilities | 189 |  | 83 |  |  | Yes | (b)
PISCC and deferred operating expenses | 51 |  | 33 |  |  | Yes | 2054
Deferred asset – Harris COLA | 32 |  | 38 |  |  |  | (b)
Hedge costs deferrals | 89 |  | 85 |  |  |  | (b)
AMI | 57 |  | 61 |  |  | Yes | (b)
DSM/EE(e) | 224 |  | 216 |  |  | (i) | (i)
Vacation accrual | 42 |  | 41 |  |  |  | 2021
Deferred fuel and purchased power | 158 |  | 266 |  |  | (f) | 2022
COR settlement | 33 |  | 35 |  |  | Yes | (e)
NCEMPA deferrals | 124 |  | 72 |  |  | (g) | 2042
Nuclear deferral | 35 |  | 40 |  |  |  | 2022
Customer connect project | 25 |  | 17 |  |  | Yes | (b)
ABSAT, coal ash basin closure | 27 |  | 15 |  |  | Yes | (b)
Deferred severance charges | 29 |  | — |  |  |  | 2022
Incremental COVID-19 expenses | 23 |  | — |  |  | Yes | (b)
Other | 122 |  | 109 |  |  |  | (b)
Total regulatory assets | 4,468 |  | 4,678 |  |  |  |
Less: current portion | 492 |  | 526 |  |  |  |
Total noncurrent regulatory assets | $ | 3,976 |  | $ | 4,152 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(l) | $ | 1,662 |  | $ | 1,802 |  |  |  | (b)
Costs of removal | 2,666 |  | 2,294 |  |  | Yes | (j)
Provision for rate refunds | 123 |  | 123 |  |  | Yes |
Other | 473 |  | 249 |  |  |  | (b)
Total regulatory liabilities | 4,924 |  | 4,468 |  |  |  |
Less: current portion | 530 |  | 236 |  |  |  |
Total noncurrent regulatory liabilities | $ | 4,394 |  | $ | 4,232 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit. (d) South Carolina storm costs are included in rate base. (e) Included in rate base. (f) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. (g) South Carolina retail allocated costs are earning a return. (h) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (i) Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism. (j) Recovered over the life of the associated assets. (k) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail. (l) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate, both discussed in Note 23. Portions are included in rate base.
Schedule Of Regulatory Liabilities | The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress' Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 1,347 |  | $ | 1,834 |  |  | (h) | (b)
AROs – nuclear and other | 683 |  | 509 |  |  |  | (c)
Accrued pension and OPEB | 393 |  | 423 |  |  |  | (k)
Storm cost deferrals(d) | 785 |  | 801 |  |  | Yes | (b)
Retired generation facilities | 189 |  | 83 |  |  | Yes | (b)
PISCC and deferred operating expenses | 51 |  | 33 |  |  | Yes | 2054
Deferred asset – Harris COLA | 32 |  | 38 |  |  |  | (b)
Hedge costs deferrals | 89 |  | 85 |  |  |  | (b)
AMI | 57 |  | 61 |  |  | Yes | (b)
DSM/EE(e) | 224 |  | 216 |  |  | (i) | (i)
Vacation accrual | 42 |  | 41 |  |  |  | 2021
Deferred fuel and purchased power | 158 |  | 266 |  |  | (f) | 2022
COR settlement | 33 |  | 35 |  |  | Yes | (e)
NCEMPA deferrals | 124 |  | 72 |  |  | (g) | 2042
Nuclear deferral | 35 |  | 40 |  |  |  | 2022
Customer connect project | 25 |  | 17 |  |  | Yes | (b)
ABSAT, coal ash basin closure | 27 |  | 15 |  |  | Yes | (b)
Deferred severance charges | 29 |  | — |  |  |  | 2022
Incremental COVID-19 expenses | 23 |  | — |  |  | Yes | (b)
Other | 122 |  | 109 |  |  |  | (b)
Total regulatory assets | 4,468 |  | 4,678 |  |  |  |
Less: current portion | 492 |  | 526 |  |  |  |
Total noncurrent regulatory assets | $ | 3,976 |  | $ | 4,152 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(l) | $ | 1,662 |  | $ | 1,802 |  |  |  | (b)
Costs of removal | 2,666 |  | 2,294 |  |  | Yes | (j)
Provision for rate refunds | 123 |  | 123 |  |  | Yes |
Other | 473 |  | 249 |  |  |  | (b)
Total regulatory liabilities | 4,924 |  | 4,468 |  |  |  |
Less: current portion | 530 |  | 236 |  |  |  |
Total noncurrent regulatory liabilities | $ | 4,394 |  | $ | 4,232 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit. (d) South Carolina storm costs are included in rate base. (e) Included in rate base. (f) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. (g) South Carolina retail allocated costs are earning a return. (h) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (i) Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism. (j) Recovered over the life of the associated assets. (k) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail. (l) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate, both discussed in Note 23. Portions are included in rate base.
Duke Energy Florida |
Public Utilities, General Disclosures [Line Items] |
Schedule of Regulatory Assets | The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida's Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash(c) | $ | 10 |  | $ | 9 |  |  |  | (b)
AROs – nuclear and other(c) | 2 |  | 159 |  |  | Yes | (b)
Accrued pension and OPEB(c) | 482 |  | 474 |  |  | Yes | (g)
Storm cost deferrals(c) | 108 |  | 413 |  |  | (e) | (b)
Nuclear asset securitized balance, net | 991 |  | 1,042 |  |  |  | 2036
Retired generation facilities(c) | 174 |  | 183 |  |  | Yes | (b)
Hedge costs deferrals | 59 |  | 44 |  |  | Yes | 2038
AMI(c) | 45 |  | 53 |  |  | Yes | 2032
DSM/EE(c) | 17 |  | 25 |  |  | Yes | 2025
Deferred fuel and purchased power | 4 |  | 39 |  |  | (f) | 2022
Qualifying facility contract buyouts | 107 |  | 121 |  |  | Yes | 2034
Customer connect project | 30 |  | 20 |  |  |  | 2037
Other | 35 |  | 31 |  |  | (d) | (b)
Total regulatory assets | 2,064 |  | 2,613 |  |  |  |
Less: current portion | 265 |  | 419 |  |  |  |
Total noncurrent regulatory assets | $ | 1,799 |  | $ | 2,194 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(c) | $ | 749 |  | $ | 793 |  |  |  | (b)
Costs of removal(c) | — |  | 267 |  |  | (d) | (b)
Deferred fuel and purchased power(c) | — |  | 1 |  |  | (f) |
Other | 19 |  | 26 |  |  | (d) | (b)
Total regulatory liabilities | 768 |  | 1,087 |  |  |  |
Less: current portion | 110 |  | 94 |  |  |  |
Total noncurrent regulatory liabilities | $ | 658 |  | $ | 993 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Certain costs earn/pay a return. (e) Earns a debt return/interest once collections begin. (f) Earns commercial paper rate. (g) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Schedule Of Regulatory Liabilities | The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida's Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash(c) | $ | 10 |  | $ | 9 |  |  |  | (b)
AROs – nuclear and other(c) | 2 |  | 159 |  |  | Yes | (b)
Accrued pension and OPEB(c) | 482 |  | 474 |  |  | Yes | (g)
Storm cost deferrals(c) | 108 |  | 413 |  |  | (e) | (b)
Nuclear asset securitized balance, net | 991 |  | 1,042 |  |  |  | 2036
Retired generation facilities(c) | 174 |  | 183 |  |  | Yes | (b)
Hedge costs deferrals | 59 |  | 44 |  |  | Yes | 2038
AMI(c) | 45 |  | 53 |  |  | Yes | 2032
DSM/EE(c) | 17 |  | 25 |  |  | Yes | 2025
Deferred fuel and purchased power | 4 |  | 39 |  |  | (f) | 2022
Qualifying facility contract buyouts | 107 |  | 121 |  |  | Yes | 2034
Customer connect project | 30 |  | 20 |  |  |  | 2037
Other | 35 |  | 31 |  |  | (d) | (b)
Total regulatory assets | 2,064 |  | 2,613 |  |  |  |
Less: current portion | 265 |  | 419 |  |  |  |
Total noncurrent regulatory assets | $ | 1,799 |  | $ | 2,194 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(c) | $ | 749 |  | $ | 793 |  |  |  | (b)
Costs of removal(c) | — |  | 267 |  |  | (d) | (b)
Deferred fuel and purchased power(c) | — |  | 1 |  |  | (f) |
Other | 19 |  | 26 |  |  | (d) | (b)
Total regulatory liabilities | 768 |  | 1,087 |  |  |  |
Less: current portion | 110 |  | 94 |  |  |  |
Total noncurrent regulatory liabilities | $ | 658 |  | $ | 993 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Certain costs earn/pay a return. (e) Earns a debt return/interest once collections begin. (f) Earns commercial paper rate. (g) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Duke Energy Ohio |
Public Utilities, General Disclosures [Line Items] |
Schedule of Regulatory Assets | The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio's Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 22 |  | $ | 16 |  |  | Yes | (b)
Accrued pension and OPEB | 149 |  | 155 |  |  |  | (g)
Storm cost deferrals | 4 |  | 7 |  |  |  | 2023
PISCC and deferred operating expenses(c) | 16 |  | 17 |  |  | Yes | 2083
Hedge costs deferrals | 7 |  | 6 |  |  |  | (b)
AMI | 36 |  | 40 |  |  |  | (b)
DSM/EE | 1 |  | 2 |  |  | (f) | (e)
Vacation accrual | 6 |  | 5 |  |  |  | 2021
Deferred fuel and purchased power | — |  | 1 |  |  |  | 2021
CEP deferral | 117 |  | 76 |  |  | Yes | (b)
MGP | 104 |  | 102 |  |  |  | (b)
Deferred pipeline integrity costs | 21 |  | 17 |  |  | Yes | (b)
Other | 166 |  | 154 |  |  |  | (b)
Total regulatory assets | 649 |  | 598 |  |  |  |
Less: current portion | 39 |  | 49 |  |  |  |
Total noncurrent regulatory assets | $ | 610 |  | $ | 549 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 628 |  | $ | 654 |  |  |  | (b)
Costs of removal | 68 |  | 86 |  |  |  | (d)
Provision for rate refunds | 45 |  | 31 |  |  |  | (b)
Accrued pension and OPEB | 17 |  | 16 |  |  |  | (g)
Other | 55 |  | 40 |  |  |  | (b)
Total regulatory liabilities | 813 |  | 827 |  |  |  |
Less: current portion | 65 |  | 64 |  |  |  |
Total noncurrent regulatory liabilities | $ | 748 |  | $ | 763 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Recovery over the life of the associated assets. (e) Recovered via a rider mechanism. (f) Includes incentives on DSM/EE investments. (g) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Schedule Of Regulatory Liabilities | The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio's Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 22 |  | $ | 16 |  |  | Yes | (b)
Accrued pension and OPEB | 149 |  | 155 |  |  |  | (g)
Storm cost deferrals | 4 |  | 7 |  |  |  | 2023
PISCC and deferred operating expenses(c) | 16 |  | 17 |  |  | Yes | 2083
Hedge costs deferrals | 7 |  | 6 |  |  |  | (b)
AMI | 36 |  | 40 |  |  |  | (b)
DSM/EE | 1 |  | 2 |  |  | (f) | (e)
Vacation accrual | 6 |  | 5 |  |  |  | 2021
Deferred fuel and purchased power | — |  | 1 |  |  |  | 2021
CEP deferral | 117 |  | 76 |  |  | Yes | (b)
MGP | 104 |  | 102 |  |  |  | (b)
Deferred pipeline integrity costs | 21 |  | 17 |  |  | Yes | (b)
Other | 166 |  | 154 |  |  |  | (b)
Total regulatory assets | 649 |  | 598 |  |  |  |
Less: current portion | 39 |  | 49 |  |  |  |
Total noncurrent regulatory assets | $ | 610 |  | $ | 549 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 628 |  | $ | 654 |  |  |  | (b)
Costs of removal | 68 |  | 86 |  |  |  | (d)
Provision for rate refunds | 45 |  | 31 |  |  |  | (b)
Accrued pension and OPEB | 17 |  | 16 |  |  |  | (g)
Other | 55 |  | 40 |  |  |  | (b)
Total regulatory liabilities | 813 |  | 827 |  |  |  |
Less: current portion | 65 |  | 64 |  |  |  |
Total noncurrent regulatory liabilities | $ | 748 |  | $ | 763 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Recovery over the life of the associated assets. (e) Recovered via a rider mechanism. (f) Includes incentives on DSM/EE investments. (g) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Schedule of MISO Exit Fee Obligations | The following table provides a reconciliation of the beginning and ending balance of Duke Energy Ohio’s recorded liability for its exit obligation and share of MTEP costs recorded in Other within Current Liabilities and Other Noncurrent Liabilities on the Consolidated Balance Sheets. The retail portions of MTEP costs billed by MISO are recovered by Duke Energy Ohio through a non-bypassable rider. As of December 31, 2020, and 2019, $37 million and $40 million, respectively, are recorded in Regulatory assets on Duke Energy Ohio's Consolidated Balance Sheets.
|  |  | Provisions/ |  | Cash |  |
(in millions) | December 31, 2019 |  | Adjustments |  | Reductions |  | December 31, 2020
Duke Energy Ohio | $ | 54 |  |  | $ | (1) |  |  | $ | (3) |  |  | $ | 50 |
Duke Energy Indiana |
Public Utilities, General Disclosures [Line Items] |
Schedule of Regulatory Assets | The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana's Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 615 |  | $ | 529 |  |  | Yes | (b)
Accrued pension and OPEB | 245 |  | 243 |  |  |  | (e)
Retired generation facilities(c) | 43 |  | 49 |  |  | Yes | 2030
PISCC and deferred operating expenses(c) | 303 |  | 246 |  |  | Yes | (b)
Hedge costs deferrals | 22 |  | 23 |  |  |  | (b)
AMI | 19 |  | 18 |  |  |  | 2031
Vacation accrual | 12 |  | 12 |  |  |  | 2021
Deferred fuel and purchased power | 9 |  | — |  |  |  | 2021
Other | 60 |  | 52 |  |  |  | (b)
Total regulatory assets | 1,328 |  | 1,172 |  |  |  |
Less: current portion | 125 |  | 90 |  |  |  |
Total noncurrent regulatory assets | $ | 1,203 |  | $ | 1,082 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 956 |  | $ | 1,008 |  |  |  | (b)
Costs of removal | 599 |  | 599 |  |  |  | (d)
Accrued pension and OPEB | 100 |  | 90 |  |  |  | (e)
Amounts to be refunded to customers | 17 |  | — |  |  |  | (b)
Other | 66 |  | 43 |  |  |  | (b)
Total regulatory liabilities | 1,738 |  | 1,740 |  |  |  |
Less: current portion | 111 |  | 55 |  |  |  |
Total noncurrent regulatory liabilities | $ | 1,627 |  | $ | 1,685 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Refunded over the life of the associated assets. (e) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Schedule Of Regulatory Liabilities | The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana's Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 615 |  | $ | 529 |  |  | Yes | (b)
Accrued pension and OPEB | 245 |  | 243 |  |  |  | (e)
Retired generation facilities(c) | 43 |  | 49 |  |  | Yes | 2030
PISCC and deferred operating expenses(c) | 303 |  | 246 |  |  | Yes | (b)
Hedge costs deferrals | 22 |  | 23 |  |  |  | (b)
AMI | 19 |  | 18 |  |  |  | 2031
Vacation accrual | 12 |  | 12 |  |  |  | 2021
Deferred fuel and purchased power | 9 |  | — |  |  |  | 2021
Other | 60 |  | 52 |  |  |  | (b)
Total regulatory assets | 1,328 |  | 1,172 |  |  |  |
Less: current portion | 125 |  | 90 |  |  |  |
Total noncurrent regulatory assets | $ | 1,203 |  | $ | 1,082 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 956 |  | $ | 1,008 |  |  |  | (b)
Costs of removal | 599 |  | 599 |  |  |  | (d)
Accrued pension and OPEB | 100 |  | 90 |  |  |  | (e)
Amounts to be refunded to customers | 17 |  | — |  |  |  | (b)
Other | 66 |  | 43 |  |  |  | (b)
Total regulatory liabilities | 1,738 |  | 1,740 |  |  |  |
Less: current portion | 111 |  | 55 |  |  |  |
Total noncurrent regulatory liabilities | $ | 1,627 |  | $ | 1,685 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Refunded over the life of the associated assets. (e) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Piedmont |
Public Utilities, General Disclosures [Line Items] |
Schedule of Regulatory Assets | The following tables present the regulatory assets and liabilities recorded on Piedmont's Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – nuclear and other | $ | 20 |  | $ | 16 |  |  |  | (d)
Accrued pension and OPEB(c) | 88 |  | 90 |  |  |  | (f)
Vacation accrual | 12 |  | 12 |  |  |  | 2021
Derivatives – natural gas supply contracts(e) | 122 |  | 117 |  |  |  |
Amounts due from customers | 110 |  | 36 |  |  | Yes | (b)
Deferred pipeline integrity costs(c) | 71 |  | 62 |  |  |  | 2023
Other | 32 |  | 30 |  |  |  | (b)
Total regulatory assets | 455 |  | 363 |  |  |  |
Less: current portion | 153 |  | 73 |  |  |  |
Total noncurrent regulatory assets | $ | 302 |  | $ | 290 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 499 |  | $ | 555 |  |  |  | (b)
Costs of removal | 575 |  | 574 |  |  |  | (d)
Provision for rate refunds | 6 |  | 41 |  |  | Yes |
Accrued pension and OPEB(c) | 3 |  | 3 |  |  |  | (f)
Amounts to be refunded to customers | 34 |  | 34 |  |  | Yes | (b)
Other | 15 |  | 5 |  |  |  | (b)
Total regulatory liabilities | 1,132 |  | 1,212 |  |  |  |
Less: current portion | 88 |  | 81 |  |  |  |
Total noncurrent regulatory liabilities | $ | 1,044 |  | $ | 1,131 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Recovery over the life of the associated assets. (e) Balance will fluctuate with changes in the market. Current contracts extend into 2031. (f) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
Schedule Of Regulatory Liabilities | The following tables present the regulatory assets and liabilities recorded on Piedmont's Consolidated Balance Sheets.
| December 31, |  | Earns/Pays | Recovery/Refund
(in millions) | 2020 | 2019 |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – nuclear and other | $ | 20 |  | $ | 16 |  |  |  | (d)
Accrued pension and OPEB(c) | 88 |  | 90 |  |  |  | (f)
Vacation accrual | 12 |  | 12 |  |  |  | 2021
Derivatives – natural gas supply contracts(e) | 122 |  | 117 |  |  |  |
Amounts due from customers | 110 |  | 36 |  |  | Yes | (b)
Deferred pipeline integrity costs(c) | 71 |  | 62 |  |  |  | 2023
Other | 32 |  | 30 |  |  |  | (b)
Total regulatory assets | 455 |  | 363 |  |  |  |
Less: current portion | 153 |  | 73 |  |  |  |
Total noncurrent regulatory assets | $ | 302 |  | $ | 290 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 499 |  | $ | 555 |  |  |  | (b)
Costs of removal | 575 |  | 574 |  |  |  | (d)
Provision for rate refunds | 6 |  | 41 |  |  | Yes |
Accrued pension and OPEB(c) | 3 |  | 3 |  |  |  | (f)
Amounts to be refunded to customers | 34 |  | 34 |  |  | Yes | (b)
Other | 15 |  | 5 |  |  |  | (b)
Total regulatory liabilities | 1,132 |  | 1,212 |  |  |  |
Less: current portion | 88 |  | 81 |  |  |  |
Total noncurrent regulatory liabilities | $ | 1,044 |  | $ | 1,131 |  |  |  |
(a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Recovery over the life of the associated assets. (e) Balance will fluctuate with changes in the market. Current contracts extend into 2031. (f) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.

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