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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2022
Public Utilities General Disclosures [Line Items] |
Summary of Additional Significant Riders Associated with Virginia Power Projects | Significant riders associated with various Virginia Power projects are as follows:
Rider Name |  | Application Date |  | Approval Date |  | Rate Year Beginning |  | Total Revenue Requirement (millions) |  |  | Increase (Decrease) Over Previous Year (millions) |
Rider B |  | June 2022 |  | January 2023 |  | April 2023 |  |  | 34 |  |  | $ | 18 |
Rider B |  | June 2022 |  | January 2023 |  | April 2024 |  |  | 34 |  |  |  | — |
Rider BW |  | October 2021 |  | May 2022 |  | September 2022 |  |  | 145 |  |  |  | 32 |
Rider BW |  | October 2021 |  | May 2022 |  | September 2023 |  |  | 120 |  |  |  | (25 | )
Rider CCR |  | February 2022 |  | October 2022 |  | December 2022 |  |  | 231 |  |  |  | 15 |
Rider CE(1) |  | September 2021 |  | March 2022 |  | May 2022 |  |  | 71 |  |  |  | 61 |
Rider CE(2) |  | October 2022 |  | Pending |  | May 2023 |  |  | 89 |  |  |  | 18 |
Rider E |  | January 2022 |  | September 2022 |  | November 2022 |  |  | 101 |  |  |  | 34 |
Rider E |  | January 2023 |  | Pending |  | November 2023 |  |  | 109 |  |  |  | 8 |
Rider GT |  | August 2021 |  | May 2022 |  | June 2022 |  |  | 56 |  |  | N/A |
Rider GT |  | August 2022 |  | Pending |  | June 2023 |  |  | 16 |  |  |  | (40 | )
Rider GV |  | June 2021 |  | December 2021 |  | April 2023 |  |  | 127 |  |  |  | (15 | )
Rider OSW |  | November 2021 |  | August 2022(3) |  | September 2022 |  |  | 79 |  |  | N/A |
Rider OSW |  | November 2022 |  | Pending |  | September 2023 |  |  | 271 |  |  |  | 192 |
Rider PPA |  | December 2022 |  | Pending |  | September 2023 |  |  | (22 | ) |  |  | (17 | )
Rider R |  | June 2021 |  | March 2022 |  | April 2022 |  |  | 59 |  |  |  | 1 |
Rider R |  | June 2021 |  | March 2022 |  | April 2023 |  |  | 55 |  |  |  | (4 | )
Rider RGGI(4) |  | December 2021 |  | Withdrawn |  |  |  |  |  |  |  |
Rider RGGI(5) |  | December 2022 |  | Pending |  | September 2023 |  |  | 373 |  |  | N/A |
Rider RPS |  | December 2021 |  | June 2022 |  | September 2022 |  |  | 140 |  |  |  | 127 |
Rider RPS |  | December 2022 |  | Pending |  | September 2023 |  |  | 111 |  |  |  | (29 | )
Rider S |  | June 2021 |  | February 2022 |  | April 2023 |  |  | 191 |  |  |  | (1 | )
Rider SNA(6) |  | October 2021 |  | July 2022 |  | September 2022 |  |  | 107 |  |  | N/A |
Rider SNA(6) |  | October 2022 |  | Pending |  | September 2023 |  |  | 50 |  |  |  | (57 | )
Rider T1(7) |  | May 2022 |  | July 2022 |  | September 2022 |  |  | 706 |  |  |  | (168 | )
Rider U(8) |  | June 2021 |  | March 2022 |  | April 2022 |  |  | 95 |  |  |  | 15 |
Rider U(9) |  | June 2022 |  | Pending |  | April 2023 |  |  | 74 |  |  |  | (21 | )
Rider US-2 |  | October 2021 |  | June 2022 |  | September 2022 |  |  | 11 |  |  |  | 2 |
Rider US-3 |  | August 2021 |  | March 2022 |  | June 2022 |  |  | 50 |  |  |  | 12 |
Rider US-3 |  | August 2022 |  | Pending |  | June 2023 |  |  | 40 |  |  |  | (10 | )
Rider US-4 |  | August 2021 |  | March 2022 |  | June 2022 |  |  | 15 |  |  |  | 5 |
Rider US-4 |  | August 2022 |  | Pending |  | June 2023 |  |  | 17 |  |  |  | 2 |
Rider W |  | June 2022 |  | Pending |  | April 2023 |  |  | 106 |  |  |  | (15 | )
Rider W |  | June 2022 |  | Pending |  | April 2024 |  |  | 109 |  |  |  | 3 |
DSM Riders(10) |  | December 2021 |  | August 2022 |  | September 2022 |  |  | 91 |  |  |  | 17 |
DSM Riders(11) |  | December 2022 |  | Pending |  | September 2023 |  |  | 107 |  |  |  | 16 |
(1) Associated with solar generation and energy storage projects approved in March 2022, solar generation projects approved in April 2021 and certain small-scale solar projects. (2) Associated with solar generation and energy storage projects requested for approval in October 2022 and certain small-scale solar projects in addition to previously approved Rider CE projects. (3) In August 2022, Virginia Power filed a petition for limited reconsideration relating to a performance standard for operation of the CVOW Commercial Project included in the Virginia Commission’s August order. The Virginia Commission granted reconsideration and suspended in part the August order pending its reconsideration with Rider OSW approved on an interim basis. In December 2022, the Virginia Commission issued an order reinstating its August 2022 order granting approval of Rider OSW. (4) In January 2022, Virginia Power filed a motion to withdraw its application as a result of the announcement by the Governor of Virginia that he intends to withdraw Virginia from RGGI. The Virginia Commission granted Virginia Power’s motion in April 2022. In May 2022, Virginia Power filed a petition with the Virginia Commission requesting a suspension of Rider RGGI approved in August 2021. Virginia Power also requested that RGGI compliance costs incurred and unrecovered through July 2022 be recovered through existing base rates in effect during the period incurred. The Virginia Commission approved the request in June 2022. In the second quarter of 2022, Virginia Power recorded a charge of $180 million ($134 million after-tax) in impairment of assets and other charges (reflected in the Corporate and Other segment) for the amount deemed recovered through base rates through June 30, 2022, including the impact of certain non-jurisdictional customers which follow Virginia Power’s jurisdictional rate methodology. Virginia Power recorded $33 million ($25 million after-tax) in depreciation and amortization in the third quarter of 2022. (5) In December 2022, Virginia Power filed a petition to update and reinstate Rider RGGI to recover RGGI compliance costs incurred after July 2022 and those projected to occur through December 2023, with rate recovery from September 2023 through August 2024. For purposes of this proceeding, Virginia Power has assumed that Virginia will withdraw from RGGI on December 31, 2023, and accordingly did not project any RGGI compliance costs to be incurred after that date. (6) Virginia Power also requested approval of cost recovery of approximately $1.2 billion through Rider SNA for the first phase of nuclear life extension program which includes investments through 2024. In April 2022, Virginia Power, the Virginia Commission staff and certain interested parties filed a proposed stipulation recommending that costs incurred after February 2022 associated with the first phase of the nuclear life extension program for North Anna be deferred and requested for recovery in a subsequent Rider SNA filing. (7) Consists of $482 million for the transmission component of Virginia Power’s base rates and $224 million for Rider T1. (8) Consists of $60 million for previously approved phases and $35 million for phase six costs for Rider U. (9) As amended in June 2022, application consists of $74 million for previously approved phases of Rider U. (10) Associated with an additional nine new energy efficiency programs with a $140 million cost cap, with the ability to exceed the cost cap by no more than 15%. (11) Associated with an additional four new energy efficiency programs, one new demand response program and four new program bundles with a $150 million cost cap, with the ability to exceed the cost cap by no more than 15%.
Summary of Significant Virginia Power Electric Transmission Projects Applied | Electric Transmission Projects Significant Virginia Power electric transmission projects approved or applied for are as follows:
Description and Location of Project |  | Application Date |  | Approval Date |  | Type of Line |  | Miles of Lines |  | Cost Estimate (millions) |
Elmont-Ladysmith rebuild and related projects in the Counties of Hanover and Caroline, Virginia |  | April 2021 |  | April 2022 |  | 500 kV |  | 26 |  | $ | 95 |
Rebuild transmission lines and related projects in the City of Staunton and County of Augusta, Virginia |  | November 2021 |  | August 2022 |  | 230 kV |  | 21 |  |  | 45 |
Build new Dulles Towne Center substation and line loop in the County of Loudoun, Virginia |  | December 2021 |  | July 2022 |  | 230 kV |  | 1 |  |  | 105 |
Build new Aviator substation and line loop in the County of Loudoun, Virginia |  | February 2022 |  | November 2022 |  | 230 kV |  | 1 |  |  | 80 |
Nimbus line loop and substation and new 230 kV line in the County of Loudon, Virginia |  | February 2022 |  | October 2022 |  | 230 kV |  | 1 |  |  | 40 |
Partial rebuild of Bristers-Ox 115 kV line in Fauquier and Prince William Counties, Virginia |  | August 2022 |  | Pending |  | 115 kV |  | 15 |  |  | 40 |
Construct new switching station, substations, transmission lines and related projects in Lunenberg and Mecklenburg Counties, Virginia |  | October 2022 |  | Pending |  | 230 kV |  | 18 |  |  | 230 |
Construct new switching station, substation, transmission lines and related projects in Charlotte, Halifax and Mecklenburg Counties, Virginia |  | October 2022 |  | Pending |  | 230 kV |  | 26 |  |  | 215 |
Construct new Mars and Wishing Star substations, transmission lines and related projects in Loudoun County, Virginia |  | October 2022 |  | Pending |  | 500/230 kV |  | 4 |  |  | 720 |
Construct new Altair switching station, transmission lines and related projects in Loudoun County, Virginia |  | November 2022 |  | Pending |  | 230 kV |  | 2 |  |  | 50 |
Construct new Cirrus and Keyser switching stations, transmission lines and related projects in Culpeper, Virginia |  | November 2022 |  | Pending |  | 230 kV |  | 5 |  |  | 65 |

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