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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2019
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) | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Regulatory Assets |  |  |  |  |  |  |
AROs – coal ash | $ | 4,084 |  |  | $ | 4,255 |  |  | $ | 1,843 |  |  | $ | 2,061 |
AROs – nuclear and other | 739 |  |  | 772 |  |  | 668 |  |  | 601 |
Accrued pension and OPEB | 2,391 |  |  | 2,654 |  |  | 897 |  |  | 1,074 |
Storm cost deferrals | 1,399 |  |  | 1,117 |  |  | 1,214 |  |  | 953 |
Nuclear asset securitized balance, net | 1,042 |  |  | 1,093 |  |  | 1,042 |  |  | 1,093 |
Debt fair value adjustment | 1,019 |  |  | 1,099 |  |  | — |  |  | — |
Deferred fuel and purchased power | 528 |  |  | 838 |  |  | 305 |  |  | 600 |
Deferred asset – Lee and Harris COLA | 388 |  |  | 426 |  |  | 38 |  |  | 43 |
Hedge costs deferrals | 356 |  |  | 204 |  |  | 129 |  |  | 74 |
Demand side management (DSM)/Energy Efficiency (EE) | 343 |  |  | 449 |  |  | 241 |  |  | 256 |
Advanced metering infrastructure (AMI) | 338 |  |  | 367 |  |  | 114 |  |  | 127 |
Retired generation facilities | 331 |  |  | 402 |  |  | 266 |  |  | 324 |
Post-in-service carrying costs (PISCC) and deferred operating expenses | 329 |  |  | 320 |  |  | 33 |  |  | 36 |
Vacation accrual | 214 |  |  | 213 |  |  | 41 |  |  | 41 |
Derivatives – natural gas supply contracts | 117 |  |  | 141 |  |  | — |  |  | — |
Nuclear deferral | 107 |  |  | 133 |  |  | 40 |  |  | 46 |
Manufactured gas plant (MGP) | 102 |  |  | 99 |  |  | — |  |  | — |
Deferred pipeline integrity costs | 79 |  |  | 65 |  |  | — |  |  | — |
NCEMPA deferrals | 72 |  |  | 50 |  |  | 72 |  |  | 50 |
East Bend deferrals | 44 |  |  | 47 |  |  | — |  |  | — |
Transmission expansion obligation | 36 |  |  | 39 |  |  | — |  |  | — |
Amounts due from customers | 36 |  |  | 24 |  |  | — |  |  | — |
Grid modernization | 28 |  |  | 31 |  |  | — |  |  | — |
Other | 896 |  |  | 784 |  |  | 349 |  |  | 322 |
Total regulatory assets | 15,018 |  |  | 15,622 |  |  | 7,292 |  |  | 7,701 |
Less: current portion | 1,796 |  |  | 2,005 |  |  | 946 |  |  | 1,137 |
Total noncurrent regulatory assets | $ | 13,222 |  |  | $ | 13,617 |  |  | $ | 6,346 |  |  | $ | 6,564 |
Regulatory Liabilities |  |  |  |  |  |  |
Net regulatory liability related to income taxes | $ | 7,872 |  |  | $ | 8,058 |  |  | $ | 2,595 |  |  | $ | 2,710 |
Costs of removal | 5,756 |  |  | 5,421 |  |  | 2,561 |  |  | 2,135 |
AROs – nuclear and other | 1,100 |  |  | 538 |  |  | — |  |  | — |
Accrued pension and OPEB | 176 |  |  | 301 |  |  | — |  |  | 149 |
Amounts to be refunded to customers | 34 |  |  | 34 |  |  | — |  |  | — |
Deferred fuel and purchased power | 1 |  |  | 16 |  |  | 1 |  |  | 16 |
Other | 1,109 |  |  | 1,064 |  |  | 398 |  |  | 319 |
Total regulatory liabilities | 16,048 |  |  | 15,432 |  |  | 5,555 |  |  | 5,329 |
Less: current portion | 784 |  |  | 598 |  |  | 330 |  |  | 280 |
Total noncurrent regulatory liabilities | $ | 15,264 |  |  | $ | 14,834 |  |  | $ | 5,225 |  |  | $ | 5,049 |
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) | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Regulatory Assets |  |  |  |  |  |  |
AROs – coal ash | $ | 4,084 |  |  | $ | 4,255 |  |  | $ | 1,843 |  |  | $ | 2,061 |
AROs – nuclear and other | 739 |  |  | 772 |  |  | 668 |  |  | 601 |
Accrued pension and OPEB | 2,391 |  |  | 2,654 |  |  | 897 |  |  | 1,074 |
Storm cost deferrals | 1,399 |  |  | 1,117 |  |  | 1,214 |  |  | 953 |
Nuclear asset securitized balance, net | 1,042 |  |  | 1,093 |  |  | 1,042 |  |  | 1,093 |
Debt fair value adjustment | 1,019 |  |  | 1,099 |  |  | — |  |  | — |
Deferred fuel and purchased power | 528 |  |  | 838 |  |  | 305 |  |  | 600 |
Deferred asset – Lee and Harris COLA | 388 |  |  | 426 |  |  | 38 |  |  | 43 |
Hedge costs deferrals | 356 |  |  | 204 |  |  | 129 |  |  | 74 |
Demand side management (DSM)/Energy Efficiency (EE) | 343 |  |  | 449 |  |  | 241 |  |  | 256 |
Advanced metering infrastructure (AMI) | 338 |  |  | 367 |  |  | 114 |  |  | 127 |
Retired generation facilities | 331 |  |  | 402 |  |  | 266 |  |  | 324 |
Post-in-service carrying costs (PISCC) and deferred operating expenses | 329 |  |  | 320 |  |  | 33 |  |  | 36 |
Vacation accrual | 214 |  |  | 213 |  |  | 41 |  |  | 41 |
Derivatives – natural gas supply contracts | 117 |  |  | 141 |  |  | — |  |  | — |
Nuclear deferral | 107 |  |  | 133 |  |  | 40 |  |  | 46 |
Manufactured gas plant (MGP) | 102 |  |  | 99 |  |  | — |  |  | — |
Deferred pipeline integrity costs | 79 |  |  | 65 |  |  | — |  |  | — |
NCEMPA deferrals | 72 |  |  | 50 |  |  | 72 |  |  | 50 |
East Bend deferrals | 44 |  |  | 47 |  |  | — |  |  | — |
Transmission expansion obligation | 36 |  |  | 39 |  |  | — |  |  | — |
Amounts due from customers | 36 |  |  | 24 |  |  | — |  |  | — |
Grid modernization | 28 |  |  | 31 |  |  | — |  |  | — |
Other | 896 |  |  | 784 |  |  | 349 |  |  | 322 |
Total regulatory assets | 15,018 |  |  | 15,622 |  |  | 7,292 |  |  | 7,701 |
Less: current portion | 1,796 |  |  | 2,005 |  |  | 946 |  |  | 1,137 |
Total noncurrent regulatory assets | $ | 13,222 |  |  | $ | 13,617 |  |  | $ | 6,346 |  |  | $ | 6,564 |
Regulatory Liabilities |  |  |  |  |  |  |
Net regulatory liability related to income taxes | $ | 7,872 |  |  | $ | 8,058 |  |  | $ | 2,595 |  |  | $ | 2,710 |
Costs of removal | 5,756 |  |  | 5,421 |  |  | 2,561 |  |  | 2,135 |
AROs – nuclear and other | 1,100 |  |  | 538 |  |  | — |  |  | — |
Accrued pension and OPEB | 176 |  |  | 301 |  |  | — |  |  | 149 |
Amounts to be refunded to customers | 34 |  |  | 34 |  |  | — |  |  | — |
Deferred fuel and purchased power | 1 |  |  | 16 |  |  | 1 |  |  | 16 |
Other | 1,109 |  |  | 1,064 |  |  | 398 |  |  | 319 |
Total regulatory liabilities | 16,048 |  |  | 15,432 |  |  | 5,555 |  |  | 5,329 |
Less: current portion | 784 |  |  | 598 |  |  | 330 |  |  | 280 |
Total noncurrent regulatory liabilities | $ | 15,264 |  |  | $ | 14,834 |  |  | $ | 5,225 |  |  | $ | 5,049 |
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, 2019, 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) | 585 |  |  | $ | 152 |
Duke Energy Indiana |  |  |
Gallagher Units 2 and 4(b) | 280 |  |  | 114 |
Gibson Units 1-5(c) | 3,132 |  |  | 1,697 |
Cayuga Units 1-2(c) | 1,005 |  |  | 974 |
Total Duke Energy | $ | 5,002 |  |  | $ | 2,937 |
(a) | Duke Energy Carolinas will retire Allen Steam Station Units 1 through 3 by December 31, 2024, as part of the resolution of a lawsuit involving alleged New Source Review violations.
(b) | 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.
(c) 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, includes proposed depreciation rates reflecting retirement dates from 2026 to 2038.
Progress Energy |
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) | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Regulatory Assets |  |  |  |  |  |  |
AROs – coal ash | $ | 4,084 |  |  | $ | 4,255 |  |  | $ | 1,843 |  |  | $ | 2,061 |
AROs – nuclear and other | 739 |  |  | 772 |  |  | 668 |  |  | 601 |
Accrued pension and OPEB | 2,391 |  |  | 2,654 |  |  | 897 |  |  | 1,074 |
Storm cost deferrals | 1,399 |  |  | 1,117 |  |  | 1,214 |  |  | 953 |
Nuclear asset securitized balance, net | 1,042 |  |  | 1,093 |  |  | 1,042 |  |  | 1,093 |
Debt fair value adjustment | 1,019 |  |  | 1,099 |  |  | — |  |  | — |
Deferred fuel and purchased power | 528 |  |  | 838 |  |  | 305 |  |  | 600 |
Deferred asset – Lee and Harris COLA | 388 |  |  | 426 |  |  | 38 |  |  | 43 |
Hedge costs deferrals | 356 |  |  | 204 |  |  | 129 |  |  | 74 |
Demand side management (DSM)/Energy Efficiency (EE) | 343 |  |  | 449 |  |  | 241 |  |  | 256 |
Advanced metering infrastructure (AMI) | 338 |  |  | 367 |  |  | 114 |  |  | 127 |
Retired generation facilities | 331 |  |  | 402 |  |  | 266 |  |  | 324 |
Post-in-service carrying costs (PISCC) and deferred operating expenses | 329 |  |  | 320 |  |  | 33 |  |  | 36 |
Vacation accrual | 214 |  |  | 213 |  |  | 41 |  |  | 41 |
Derivatives – natural gas supply contracts | 117 |  |  | 141 |  |  | — |  |  | — |
Nuclear deferral | 107 |  |  | 133 |  |  | 40 |  |  | 46 |
Manufactured gas plant (MGP) | 102 |  |  | 99 |  |  | — |  |  | — |
Deferred pipeline integrity costs | 79 |  |  | 65 |  |  | — |  |  | — |
NCEMPA deferrals | 72 |  |  | 50 |  |  | 72 |  |  | 50 |
East Bend deferrals | 44 |  |  | 47 |  |  | — |  |  | — |
Transmission expansion obligation | 36 |  |  | 39 |  |  | — |  |  | — |
Amounts due from customers | 36 |  |  | 24 |  |  | — |  |  | — |
Grid modernization | 28 |  |  | 31 |  |  | — |  |  | — |
Other | 896 |  |  | 784 |  |  | 349 |  |  | 322 |
Total regulatory assets | 15,018 |  |  | 15,622 |  |  | 7,292 |  |  | 7,701 |
Less: current portion | 1,796 |  |  | 2,005 |  |  | 946 |  |  | 1,137 |
Total noncurrent regulatory assets | $ | 13,222 |  |  | $ | 13,617 |  |  | $ | 6,346 |  |  | $ | 6,564 |
Regulatory Liabilities |  |  |  |  |  |  |
Net regulatory liability related to income taxes | $ | 7,872 |  |  | $ | 8,058 |  |  | $ | 2,595 |  |  | $ | 2,710 |
Costs of removal | 5,756 |  |  | 5,421 |  |  | 2,561 |  |  | 2,135 |
AROs – nuclear and other | 1,100 |  |  | 538 |  |  | — |  |  | — |
Accrued pension and OPEB | 176 |  |  | 301 |  |  | — |  |  | 149 |
Amounts to be refunded to customers | 34 |  |  | 34 |  |  | — |  |  | — |
Deferred fuel and purchased power | 1 |  |  | 16 |  |  | 1 |  |  | 16 |
Other | 1,109 |  |  | 1,064 |  |  | 398 |  |  | 319 |
Total regulatory liabilities | 16,048 |  |  | 15,432 |  |  | 5,555 |  |  | 5,329 |
Less: current portion | 784 |  |  | 598 |  |  | 330 |  |  | 280 |
Total noncurrent regulatory liabilities | $ | 15,264 |  |  | $ | 14,834 |  |  | $ | 5,225 |  |  | $ | 5,049 |
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) | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Regulatory Assets |  |  |  |  |  |  |
AROs – coal ash | $ | 4,084 |  |  | $ | 4,255 |  |  | $ | 1,843 |  |  | $ | 2,061 |
AROs – nuclear and other | 739 |  |  | 772 |  |  | 668 |  |  | 601 |
Accrued pension and OPEB | 2,391 |  |  | 2,654 |  |  | 897 |  |  | 1,074 |
Storm cost deferrals | 1,399 |  |  | 1,117 |  |  | 1,214 |  |  | 953 |
Nuclear asset securitized balance, net | 1,042 |  |  | 1,093 |  |  | 1,042 |  |  | 1,093 |
Debt fair value adjustment | 1,019 |  |  | 1,099 |  |  | — |  |  | — |
Deferred fuel and purchased power | 528 |  |  | 838 |  |  | 305 |  |  | 600 |
Deferred asset – Lee and Harris COLA | 388 |  |  | 426 |  |  | 38 |  |  | 43 |
Hedge costs deferrals | 356 |  |  | 204 |  |  | 129 |  |  | 74 |
Demand side management (DSM)/Energy Efficiency (EE) | 343 |  |  | 449 |  |  | 241 |  |  | 256 |
Advanced metering infrastructure (AMI) | 338 |  |  | 367 |  |  | 114 |  |  | 127 |
Retired generation facilities | 331 |  |  | 402 |  |  | 266 |  |  | 324 |
Post-in-service carrying costs (PISCC) and deferred operating expenses | 329 |  |  | 320 |  |  | 33 |  |  | 36 |
Vacation accrual | 214 |  |  | 213 |  |  | 41 |  |  | 41 |
Derivatives – natural gas supply contracts | 117 |  |  | 141 |  |  | — |  |  | — |
Nuclear deferral | 107 |  |  | 133 |  |  | 40 |  |  | 46 |
Manufactured gas plant (MGP) | 102 |  |  | 99 |  |  | — |  |  | — |
Deferred pipeline integrity costs | 79 |  |  | 65 |  |  | — |  |  | — |
NCEMPA deferrals | 72 |  |  | 50 |  |  | 72 |  |  | 50 |
East Bend deferrals | 44 |  |  | 47 |  |  | — |  |  | — |
Transmission expansion obligation | 36 |  |  | 39 |  |  | — |  |  | — |
Amounts due from customers | 36 |  |  | 24 |  |  | — |  |  | — |
Grid modernization | 28 |  |  | 31 |  |  | — |  |  | — |
Other | 896 |  |  | 784 |  |  | 349 |  |  | 322 |
Total regulatory assets | 15,018 |  |  | 15,622 |  |  | 7,292 |  |  | 7,701 |
Less: current portion | 1,796 |  |  | 2,005 |  |  | 946 |  |  | 1,137 |
Total noncurrent regulatory assets | $ | 13,222 |  |  | $ | 13,617 |  |  | $ | 6,346 |  |  | $ | 6,564 |
Regulatory Liabilities |  |  |  |  |  |  |
Net regulatory liability related to income taxes | $ | 7,872 |  |  | $ | 8,058 |  |  | $ | 2,595 |  |  | $ | 2,710 |
Costs of removal | 5,756 |  |  | 5,421 |  |  | 2,561 |  |  | 2,135 |
AROs – nuclear and other | 1,100 |  |  | 538 |  |  | — |  |  | — |
Accrued pension and OPEB | 176 |  |  | 301 |  |  | — |  |  | 149 |
Amounts to be refunded to customers | 34 |  |  | 34 |  |  | — |  |  | — |
Deferred fuel and purchased power | 1 |  |  | 16 |  |  | 1 |  |  | 16 |
Other | 1,109 |  |  | 1,064 |  |  | 398 |  |  | 319 |
Total regulatory liabilities | 16,048 |  |  | 15,432 |  |  | 5,555 |  |  | 5,329 |
Less: current portion | 784 |  |  | 598 |  |  | 330 |  |  | 280 |
Total noncurrent regulatory liabilities | $ | 15,264 |  |  | $ | 14,834 |  |  | $ | 5,225 |  |  | $ | 5,049 |
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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 1,696 |  | $ | 1,725 |  |  | (i) | (b)
Accrued pension and OPEB | 477 |  | 581 |  |  |  | (j)
Storm cost deferrals | 178 |  | 160 |  |  | Yes | (b)
Deferred fuel and purchased power | 222 |  | 196 |  |  | (f) | 2021
Deferred asset – Lee COLA | 350 |  | 383 |  |  |  | (b)
Hedge costs deferrals(c) | 198 |  | 101 |  |  | Yes | 2041
DSM/EE | 100 |  | 169 |  |  | (h) | (h)
AMI | 166 |  | 176 |  |  | Yes | (b)
Retired generation facilities(c) | 16 |  | 21 |  |  | Yes | 2023
PISCC(c) | 33 |  | 34 |  |  | Yes | (b)
Vacation accrual | 80 |  | 78 |  |  | (e) | 2020
Nuclear deferral | 67 |  | 87 |  |  |  | 2021
Other | 327 |  | 266 |  |  |  | (b)
Total regulatory assets | 3,910 |  | 3,977 |  |  |  |
Less: current portion | 550 |  | 520 |  |  |  |
Total noncurrent regulatory assets | $ | 3,360 |  | $ | 3,457 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(d) | $ | 3,060 |  | $ | 3,082 |  |  |  | (b)
Costs of removal(c) | 1,936 |  | 1,968 |  |  | Yes | (g)
AROs – nuclear and other | 1,100 |  | 538 |  |  |  | (b)
Accrued pension and OPEB | 39 |  | 38 |  |  |  | (j)
Other | 543 |  | 572 |  |  |  | (b)
Total regulatory liabilities | 6,678 |  | 6,198 |  |  |  |
Less: current portion | 255 |  | 199 |  |  |  |
Total noncurrent regulatory liabilities | $ | 6,423 |  | $ | 5,999 |  |  |  |
(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 24.
(e) | Earns a return on outstanding balance in North Carolina.
(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) | Recovered over the life of the associated assets.
(h) | Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism.
(i) | Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders.
(j) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 1,696 |  | $ | 1,725 |  |  | (i) | (b)
Accrued pension and OPEB | 477 |  | 581 |  |  |  | (j)
Storm cost deferrals | 178 |  | 160 |  |  | Yes | (b)
Deferred fuel and purchased power | 222 |  | 196 |  |  | (f) | 2021
Deferred asset – Lee COLA | 350 |  | 383 |  |  |  | (b)
Hedge costs deferrals(c) | 198 |  | 101 |  |  | Yes | 2041
DSM/EE | 100 |  | 169 |  |  | (h) | (h)
AMI | 166 |  | 176 |  |  | Yes | (b)
Retired generation facilities(c) | 16 |  | 21 |  |  | Yes | 2023
PISCC(c) | 33 |  | 34 |  |  | Yes | (b)
Vacation accrual | 80 |  | 78 |  |  | (e) | 2020
Nuclear deferral | 67 |  | 87 |  |  |  | 2021
Other | 327 |  | 266 |  |  |  | (b)
Total regulatory assets | 3,910 |  | 3,977 |  |  |  |
Less: current portion | 550 |  | 520 |  |  |  |
Total noncurrent regulatory assets | $ | 3,360 |  | $ | 3,457 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(d) | $ | 3,060 |  | $ | 3,082 |  |  |  | (b)
Costs of removal(c) | 1,936 |  | 1,968 |  |  | Yes | (g)
AROs – nuclear and other | 1,100 |  | 538 |  |  |  | (b)
Accrued pension and OPEB | 39 |  | 38 |  |  |  | (j)
Other | 543 |  | 572 |  |  |  | (b)
Total regulatory liabilities | 6,678 |  | 6,198 |  |  |  |
Less: current portion | 255 |  | 199 |  |  |  |
Total noncurrent regulatory liabilities | $ | 6,423 |  | $ | 5,999 |  |  |  |
(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 24.
(e) | Earns a return on outstanding balance in North Carolina.
(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) | Recovered over the life of the associated assets.
(h) | Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism.
(i) | Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders.
(j) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 1,834 |  | $ | 2,051 |  |  | (h) | (b)
AROs – nuclear and other | 509 |  | 429 |  |  |  | (c)
Accrued pension and OPEB | 423 |  | 542 |  |  |  | (k)
Storm cost deferrals(d) | 801 |  | 571 |  |  | Yes | (b)
Deferred fuel and purchased power | 266 |  | 397 |  |  | (f) | 2021
Deferred asset – Harris COLA | 38 |  | 43 |  |  |  |
Hedge costs deferrals | 85 |  | 54 |  |  |  | (b)
DSM/EE(e) | 216 |  | 235 |  |  | (i) | (i)
AMI | 61 |  | 67 |  |  |  | (b)
Retired generation facilities | 83 |  | 105 |  |  | Yes | (b)
PISCC and deferred operating expenses | 33 |  | 36 |  |  | Yes | 2054
Vacation accrual | 41 |  | 41 |  |  |  | 2020
Nuclear deferral | 40 |  | 46 |  |  |  | 2021
NCEMPA deferrals | 72 |  | 50 |  |  | (g) | 2042
Other | 176 |  | 147 |  |  |  | (b)
Total regulatory assets | 4,678 |  | 4,814 |  |  |  |
Less: current portion | 526 |  | 703 |  |  |  |
Total noncurrent regulatory assets | $ | 4,152 |  | $ | 4,111 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(l) | $ | 1,802 |  | $ | 1,863 |  |  |  | (b)
Costs of removal | 2,294 |  | 1,878 |  |  | Yes | (j)
Accrued pension and OPEB | — |  | 93 |  |  |  | (k)
Other | 372 |  | 299 |  |  |  | (b)
Total regulatory liabilities | 4,468 |  | 4,133 |  |  |  |
Less: current portion | 236 |  | 178 |  |  |  |
Total noncurrent regulatory liabilities | $ | 4,232 |  | $ | 3,955 |  |  |  |
(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 23 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.
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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 1,834 |  | $ | 2,051 |  |  | (h) | (b)
AROs – nuclear and other | 509 |  | 429 |  |  |  | (c)
Accrued pension and OPEB | 423 |  | 542 |  |  |  | (k)
Storm cost deferrals(d) | 801 |  | 571 |  |  | Yes | (b)
Deferred fuel and purchased power | 266 |  | 397 |  |  | (f) | 2021
Deferred asset – Harris COLA | 38 |  | 43 |  |  |  |
Hedge costs deferrals | 85 |  | 54 |  |  |  | (b)
DSM/EE(e) | 216 |  | 235 |  |  | (i) | (i)
AMI | 61 |  | 67 |  |  |  | (b)
Retired generation facilities | 83 |  | 105 |  |  | Yes | (b)
PISCC and deferred operating expenses | 33 |  | 36 |  |  | Yes | 2054
Vacation accrual | 41 |  | 41 |  |  |  | 2020
Nuclear deferral | 40 |  | 46 |  |  |  | 2021
NCEMPA deferrals | 72 |  | 50 |  |  | (g) | 2042
Other | 176 |  | 147 |  |  |  | (b)
Total regulatory assets | 4,678 |  | 4,814 |  |  |  |
Less: current portion | 526 |  | 703 |  |  |  |
Total noncurrent regulatory assets | $ | 4,152 |  | $ | 4,111 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(l) | $ | 1,802 |  | $ | 1,863 |  |  |  | (b)
Costs of removal | 2,294 |  | 1,878 |  |  | Yes | (j)
Accrued pension and OPEB | — |  | 93 |  |  |  | (k)
Other | 372 |  | 299 |  |  |  | (b)
Total regulatory liabilities | 4,468 |  | 4,133 |  |  |  |
Less: current portion | 236 |  | 178 |  |  |  |
Total noncurrent regulatory liabilities | $ | 4,232 |  | $ | 3,955 |  |  |  |
(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 23 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.
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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash(c) | $ | 9 |  | $ | 10 |  |  |  | (b)
AROs – nuclear and other(c) | 159 |  | 172 |  |  |  | (b)
Accrued pension and OPEB(c) | 474 |  | 532 |  |  | Yes | (g)
Storm cost deferrals(c) | 413 |  | 382 |  |  | (e) | 2021
Nuclear asset securitized balance, net | 1,042 |  | 1,093 |  |  |  | 2036
Deferred fuel and purchased power | 39 |  | 203 |  |  | (f) | 2021
Hedge costs deferrals | 44 |  | 20 |  |  |  | 2038
DSM/EE(c) | 25 |  | 21 |  |  | Yes | 2024
AMI(c) | 53 |  | 60 |  |  | Yes | 2032
Retired generation facilities(c) | 183 |  | 219 |  |  | Yes | (b)
Other | 172 |  | 176 |  |  | (d) | (b)
Total regulatory assets | 2,613 |  | 2,888 |  |  |  |
Less: current portion | 419 |  | 434 |  |  |  |
Total noncurrent regulatory assets | $ | 2,194 |  | $ | 2,454 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(c) | $ | 793 |  | $ | 847 |  |  |  | (b)
Costs of removal(c) | 267 |  | 257 |  |  | (d) | (b)
Accrued pension and OPEB | — |  | 56 |  |  | Yes | (g)
Deferred fuel and purchased power(c) | 1 |  | 16 |  |  | (f) | 2021
Other | 26 |  | 20 |  |  | (d) | (b)
Total regulatory liabilities | 1,087 |  | 1,196 |  |  |  |
Less: current portion | 94 |  | 102 |  |  |  |
Total noncurrent regulatory liabilities | $ | 993 |  | $ | 1,094 |  |  |  |
(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 23 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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash(c) | $ | 9 |  | $ | 10 |  |  |  | (b)
AROs – nuclear and other(c) | 159 |  | 172 |  |  |  | (b)
Accrued pension and OPEB(c) | 474 |  | 532 |  |  | Yes | (g)
Storm cost deferrals(c) | 413 |  | 382 |  |  | (e) | 2021
Nuclear asset securitized balance, net | 1,042 |  | 1,093 |  |  |  | 2036
Deferred fuel and purchased power | 39 |  | 203 |  |  | (f) | 2021
Hedge costs deferrals | 44 |  | 20 |  |  |  | 2038
DSM/EE(c) | 25 |  | 21 |  |  | Yes | 2024
AMI(c) | 53 |  | 60 |  |  | Yes | 2032
Retired generation facilities(c) | 183 |  | 219 |  |  | Yes | (b)
Other | 172 |  | 176 |  |  | (d) | (b)
Total regulatory assets | 2,613 |  | 2,888 |  |  |  |
Less: current portion | 419 |  | 434 |  |  |  |
Total noncurrent regulatory assets | $ | 2,194 |  | $ | 2,454 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes(c) | $ | 793 |  | $ | 847 |  |  |  | (b)
Costs of removal(c) | 267 |  | 257 |  |  | (d) | (b)
Accrued pension and OPEB | — |  | 56 |  |  | Yes | (g)
Deferred fuel and purchased power(c) | 1 |  | 16 |  |  | (f) | 2021
Other | 26 |  | 20 |  |  | (d) | (b)
Total regulatory liabilities | 1,087 |  | 1,196 |  |  |  |
Less: current portion | 94 |  | 102 |  |  |  |
Total noncurrent regulatory liabilities | $ | 993 |  | $ | 1,094 |  |  |  |
(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 23 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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 16 |  | $ | 20 |  |  | Yes | (b)
Accrued pension and OPEB | 155 |  | 146 |  |  |  | (g)
Storm cost deferrals | 7 |  | 4 |  |  |  | 2023
Deferred fuel and purchased power | 1 |  | 2 |  |  |  | 2020
Hedge costs deferrals | 6 |  | 5 |  |  |  | (b)
DSM/EE | 2 |  | 10 |  |  | (f) | (e)
AMI | 40 |  | 46 |  |  |  | (b)
PISCC and deferred operating expenses(c) | 17 |  | 17 |  |  | Yes | 2083
Vacation accrual | 5 |  | 5 |  |  |  | 2020
MGP | 102 |  | 99 |  |  |  | (b)
Deferred pipeline integrity costs | 17 |  | 14 |  |  | Yes | (b)
East Bend deferrals | 44 |  | 47 |  |  | Yes | (b)
Transmission expansion obligation | 40 |  | 43 |  |  |  | (e)
Grid modernization | 28 |  | 31 |  |  | Yes | (b) (c)
Other | 118 |  | 75 |  |  |  | (b)
Total regulatory assets | 598 |  | 564 |  |  |  |
Less: current portion | 49 |  | 33 |  |  |  |
Total noncurrent regulatory assets | $ | 549 |  | $ | 531 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 654 |  | $ | 678 |  |  |  | (b)
Costs of removal | 86 |  | 126 |  |  |  | (d)
Accrued pension and OPEB | 16 |  | 18 |  |  |  | (g)
Other | 71 |  | 75 |  |  |  | (b)
Total regulatory liabilities | 827 |  | 897 |  |  |  |
Less: current portion | 64 |  | 57 |  |  |  |
Total noncurrent regulatory liabilities | $ | 763 |  | $ | 840 |  |  |  |
(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 23 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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 16 |  | $ | 20 |  |  | Yes | (b)
Accrued pension and OPEB | 155 |  | 146 |  |  |  | (g)
Storm cost deferrals | 7 |  | 4 |  |  |  | 2023
Deferred fuel and purchased power | 1 |  | 2 |  |  |  | 2020
Hedge costs deferrals | 6 |  | 5 |  |  |  | (b)
DSM/EE | 2 |  | 10 |  |  | (f) | (e)
AMI | 40 |  | 46 |  |  |  | (b)
PISCC and deferred operating expenses(c) | 17 |  | 17 |  |  | Yes | 2083
Vacation accrual | 5 |  | 5 |  |  |  | 2020
MGP | 102 |  | 99 |  |  |  | (b)
Deferred pipeline integrity costs | 17 |  | 14 |  |  | Yes | (b)
East Bend deferrals | 44 |  | 47 |  |  | Yes | (b)
Transmission expansion obligation | 40 |  | 43 |  |  |  | (e)
Grid modernization | 28 |  | 31 |  |  | Yes | (b) (c)
Other | 118 |  | 75 |  |  |  | (b)
Total regulatory assets | 598 |  | 564 |  |  |  |
Less: current portion | 49 |  | 33 |  |  |  |
Total noncurrent regulatory assets | $ | 549 |  | $ | 531 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 654 |  | $ | 678 |  |  |  | (b)
Costs of removal | 86 |  | 126 |  |  |  | (d)
Accrued pension and OPEB | 16 |  | 18 |  |  |  | (g)
Other | 71 |  | 75 |  |  |  | (b)
Total regulatory liabilities | 827 |  | 897 |  |  |  |
Less: current portion | 64 |  | 57 |  |  |  |
Total noncurrent regulatory liabilities | $ | 763 |  | $ | 840 |  |  |  |
(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 23 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, 2019, and 2018, $40 million and $43 million, respectively, are recorded in Regulatory assets on Duke Energy Ohio's Consolidated Balance Sheets.
|  |  | Provisions/ |  |  | Cash |  |  |
(in millions) | December 31, 2018 |  |  | Adjustments |  |  | Reductions |  |  | December 31, 2019 |
Duke Energy Ohio | $ | 58 |  |  | $ | — |  |  | $ | (4 | ) |  | $ | 54 |
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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 529 |  | $ | 450 |  |  |  | (b)
Accrued pension and OPEB | 243 |  | 222 |  |  |  | (f)
Deferred fuel and purchased power | — |  | 40 |  |  |  | 2020
Hedge costs deferrals | 23 |  | 24 |  |  |  | (b)
DSM/EE | — |  | 14 |  |  | (e) | (e)
AMI(c) | 18 |  | 18 |  |  | Yes | (b)
Retired generation facilities(c) | 49 |  | 57 |  |  | Yes | 2026
PISCC and deferred operating expenses(c) | 246 |  | 233 |  |  | Yes | (b)
Vacation accrual | 12 |  | 11 |  |  |  | 2020
Other | 52 |  | 88 |  |  |  | (b)
Total regulatory assets | 1,172 |  | 1,157 |  |  |  |
Less: current portion | 90 |  | 175 |  |  |  |
Total noncurrent regulatory assets | $ | 1,082 |  | $ | 982 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 1,008 |  | $ | 1,009 |  |  |  | (b)
Costs of removal | 599 |  | 628 |  |  |  | (d)
Accrued pension and OPEB | 90 |  | 67 |  |  |  | (f)
Amounts to be refunded to customers | — |  | 1 |  |  |  | 2020
Other | 43 |  | 42 |  |  |  | (b)
Total regulatory liabilities | 1,740 |  | 1,747 |  |  |  |
Less: current portion | 55 |  | 25 |  |  |  |
Total noncurrent regulatory liabilities | $ | 1,685 |  | $ | 1,722 |  |  |  |
(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) | Includes incentives on DSM/EE investments and is recovered through a tracker mechanism over a two-year period.
(f) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – coal ash | $ | 529 |  | $ | 450 |  |  |  | (b)
Accrued pension and OPEB | 243 |  | 222 |  |  |  | (f)
Deferred fuel and purchased power | — |  | 40 |  |  |  | 2020
Hedge costs deferrals | 23 |  | 24 |  |  |  | (b)
DSM/EE | — |  | 14 |  |  | (e) | (e)
AMI(c) | 18 |  | 18 |  |  | Yes | (b)
Retired generation facilities(c) | 49 |  | 57 |  |  | Yes | 2026
PISCC and deferred operating expenses(c) | 246 |  | 233 |  |  | Yes | (b)
Vacation accrual | 12 |  | 11 |  |  |  | 2020
Other | 52 |  | 88 |  |  |  | (b)
Total regulatory assets | 1,172 |  | 1,157 |  |  |  |
Less: current portion | 90 |  | 175 |  |  |  |
Total noncurrent regulatory assets | $ | 1,082 |  | $ | 982 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 1,008 |  | $ | 1,009 |  |  |  | (b)
Costs of removal | 599 |  | 628 |  |  |  | (d)
Accrued pension and OPEB | 90 |  | 67 |  |  |  | (f)
Amounts to be refunded to customers | — |  | 1 |  |  |  | 2020
Other | 43 |  | 42 |  |  |  | (b)
Total regulatory liabilities | 1,740 |  | 1,747 |  |  |  |
Less: current portion | 55 |  | 25 |  |  |  |
Total noncurrent regulatory liabilities | $ | 1,685 |  | $ | 1,722 |  |  |  |
(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) | Includes incentives on DSM/EE investments and is recovered through a tracker mechanism over a two-year period.
(f) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – nuclear and other | 16 |  | 19 |  |  |  | (d)
Accrued pension and OPEB(c) | 90 |  | 99 |  |  | Yes | (f)
Vacation accrual | 12 |  | 12 |  |  |  |
Derivatives – natural gas supply contracts(e) | 117 |  | 141 |  |  |  |
Deferred pipeline integrity costs(c) | 62 |  | 51 |  |  | Yes | (b)
Amounts due from customers | 36 |  | 24 |  |  | Yes | (b)
Other | 30 |  | 11 |  |  |  | (b)
Total regulatory assets | 363 |  | 357 |  |  |  |
Less: current portion | 73 |  | 54 |  |  |  |
Total noncurrent regulatory assets | $ | 290 |  | $ | 303 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 555 |  | $ | 579 |  |  |  | (b)
Costs of removal | 574 |  | 564 |  |  |  | (d)
Accrued pension and OPEB(c) | 3 |  | 1 |  |  | Yes | (f)
Amounts to be refunded to customers | 34 |  | 33 |  |  | Yes | (b)
Other | 46 |  | 41 |  |  |  | (b)
Total regulatory liabilities | 1,212 |  | 1,218 |  |  |  |
Less: current portion | 81 |  | 37 |  |  |  |
Total noncurrent regulatory liabilities | $ | 1,131 |  | $ | 1,181 |  |  |  |
(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 23 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) | 2019 |  | 2018 |  |  | a Return | Period Ends
Regulatory Assets(a) |  |  |  |  |
AROs – nuclear and other | 16 |  | 19 |  |  |  | (d)
Accrued pension and OPEB(c) | 90 |  | 99 |  |  | Yes | (f)
Vacation accrual | 12 |  | 12 |  |  |  |
Derivatives – natural gas supply contracts(e) | 117 |  | 141 |  |  |  |
Deferred pipeline integrity costs(c) | 62 |  | 51 |  |  | Yes | (b)
Amounts due from customers | 36 |  | 24 |  |  | Yes | (b)
Other | 30 |  | 11 |  |  |  | (b)
Total regulatory assets | 363 |  | 357 |  |  |  |
Less: current portion | 73 |  | 54 |  |  |  |
Total noncurrent regulatory assets | $ | 290 |  | $ | 303 |  |  |  |
Regulatory Liabilities(a) |  |  |  |  |
Net regulatory liability related to income taxes | $ | 555 |  | $ | 579 |  |  |  | (b)
Costs of removal | 574 |  | 564 |  |  |  | (d)
Accrued pension and OPEB(c) | 3 |  | 1 |  |  | Yes | (f)
Amounts to be refunded to customers | 34 |  | 33 |  |  | Yes | (b)
Other | 46 |  | 41 |  |  |  | (b)
Total regulatory liabilities | 1,212 |  | 1,218 |  |  |  |
Less: current portion | 81 |  | 37 |  |  |  |
Total noncurrent regulatory liabilities | $ | 1,131 |  | $ | 1,181 |  |  |  |
(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 23 for additional detail.

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- Definition Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 715 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382 + Details
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