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Regulatory Matters - Schedule of Additional Significant Riders Associated with Virginia Power Projects (Detail) - Virginia Electric and Power Company $ in Millions | 9 Months Ended
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Sep. 30, 2024 USD ($)
Rider CCR |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-03 |
Approval Date | Pending |
Rate Year Beginning | 2024-12 |
Total Revenue Requirement (millions) | $ 103 | [1]
Increase (decrease) in revenue requirement | $ (91) |
Rider CE |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2023-10 | [2]
Approval Date | March 2024 | [2]
Rate Year Beginning | 2024-05 | [2]
Total Revenue Requirement (millions) | $ 133 | [1],[2]
Increase (decrease) in revenue requirement | $ 44 | [2]
Rider CE One |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-10 | [3]
Approval Date | Pending | [3]
Rate Year Beginning | 2025-05 | [3]
Total Revenue Requirement (millions) | $ 182 | [1],[3]
Increase (decrease) in revenue requirement | $ 49 | [2],[3]
Rider DIST |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-08 | [4]
Approval Date | Pending | [4]
Rate Year Beginning | 2025-06 | [4]
Total Revenue Requirement (millions) | $ 269 | [1],[4]
Rider E |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-01 |
Approval Date | September 2024 |
Rate Year Beginning | 2024-11 |
Total Revenue Requirement (millions) | $ 72 | [1]
Increase (decrease) in revenue requirement | $ (37) |
Rider GEN |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-06 | [5]
Approval Date | Pending | [5]
Rate Year Beginning | 2025-04 | [5]
Total Revenue Requirement (millions) | $ 438 | [1],[5]
Rider GEN One |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-06 |
Approval Date | Pending |
Rate Year Beginning | 2026-04 |
Total Revenue Requirement (millions) | $ 311 | [1]
Increase (decrease) in revenue requirement | $ (127) |
Rider GT |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2023-08 |
Approval Date | May 2024 |
Rate Year Beginning | 2024-06 |
Total Revenue Requirement (millions) | $ 145 | [1]
Increase (decrease) in revenue requirement | $ 131 |
Rider OSW |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2023-11 |
Approval Date | July 2024 |
Rate Year Beginning | 2024-09 |
Total Revenue Requirement (millions) | $ 486 | [1]
Increase (decrease) in revenue requirement | $ 215 |
Rider O S W One |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-11 | [6]
Approval Date | Pending | [6]
Rate Year Beginning | 2025-09 | [6]
Total Revenue Requirement (millions) | $ 640 | [1],[6]
Increase (decrease) in revenue requirement | $ 154 | [6]
Rider RPS |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2023-12 | [7]
Approval Date | August 2024 |
Rate Year Beginning | 2024-09 |
Total Revenue Requirement (millions) | $ 358 | [1]
Increase (decrease) in revenue requirement | $ 262 |
Rider SNA |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2023-10 |
Approval Date | July 2024 |
Rate Year Beginning | 2024-09 |
Total Revenue Requirement (millions) | $ 69 | [1]
Increase (decrease) in revenue requirement | $ 19 |
Rider S N A One |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-10 | [8]
Approval Date | Pending | [8]
Rate Year Beginning | 2025-09 | [8]
Total Revenue Requirement (millions) | $ 207 | [1],[8]
Increase (decrease) in revenue requirement | $ 138 | [8]
Rider T1 |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-05 | [9]
Approval Date | July 2024 | [9]
Rate Year Beginning | 2024-09 | [9]
Total Revenue Requirement (millions) | $ 1,170 | [1],[9]
Increase (decrease) in revenue requirement | $ 291 | [9]
Rider U |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2023-10 | [10]
Approval Date | July 2024 | [10]
Rate Year Beginning | 2024-08 | [10]
Total Revenue Requirement (millions) | $ 150 | [1],[10]
Increase (decrease) in revenue requirement | $ 76 | [10]
DSM Riders |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2023-12 | [11]
Approval Date | July 2024 | [11]
Rate Year Beginning | 2024-09 | [11]
Total Revenue Requirement (millions) | $ 86 | [1],[11]
Increase (decrease) in revenue requirement | $ (21) | [11]
[1] | In addition, Virginia Power has a rider associated with another project with a total annual revenue requirement of $18 million as of September 30, 2024. There is a pending application associated with this rider, which if approved, would result in a net annual revenue requirement increase of $7 million.
[2] | The Virginia Commission approved four solar generation projects and 13 power purchase agreements in addition to previously approved Rider CE projects. In addition, the approved total revenue requirement includes amounts which had previously been collected under a separate rider.
[3] | Associated with two solar generation projects, two small-scale solar projects and 24 purchased power agreements in addition to previously approved Rider CE projects.
[4] | Consists of $103 million in total revenue requirement for certain previously approved electric distribution grid transformation projects and $166 million for previously approved phases and proposed phase eight of certain new underground distribution facilities. If approved, would result in the consolidation of Riders GT and U and cease the separate collection of rates under these riders effective June 1, 2025.
[5] | Includes $348 million in total revenue requirement related to the consolidation of Riders BW, GV and four other riders associated with generation facilities, ceasing the separate collection of rates under these riders effective April 1, 2025 and the extension of existing rates for Rider BW through March 2025. In addition, Virginia Power also requests approval to recover costs associated with the Virginia LNG Storage Facility described above.
[6] | Includes a proposal for Virginia Power to establish a decommissioning trust fund associated with the CVOW Commercial Project. If approved, the applicable amount included within the total revenue requirement would be allocated for such purposes.
[7] | Virginia Power amended its application in February 2024.
[8] | Virginia Power also requested approval of cost recovery of approximately $1.7 billion through Rider SNA for the second phase of nuclear life extension program which includes investments for calendar years 2025 through 2027.
[9] | Consists of $532 million for the transmission component of Virginia Power’s base rates and $638 million for Rider T1.
[10] | Consists of $72 million for previously approved phases and $78 million for phase seven costs for Rider U. In addition, the Virginia Commission approved Virginia Power’s request to extend existing rates for Rider U through July 2024.
[11] | Associated with an additional three new energy efficiency programs and one new demand response program with a $102 million cost cap, with the ability to exceed the cost cap by no more than 15%.

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