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Regulatory Matters - Summary of Virginia Power Electric Transmission Project Applied (Detail) - Virginia Electric and Power Company $ in Millions | 6 Months Ended
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Jun. 30, 2025 USD ($) mi kV
Construct new Aspen and Golden substations, transmission lines and related projects in Loudoun County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-03 |
Approval Date | 2025-02 | [1]
Type of Line | 500-230 kV |
Miles of Lines | mi | 10 |
Cost Estimate | $ | $ 705 | [2]
Construct new Apollo-Twin Creek transmission lines, new substations and related projects in Loudoun County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-03 |
Approval Date | 2025-02 | [1]
Type of Line | kV | 230 |
Miles of Lines | mi | 2 |
Cost Estimate | $ | $ 285 | [2]
Rebuild and construct new Fentress-Yadkin transmission lines and related projects in the City of Chesapeake, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-06 |
Approval Date | 2025-02 |
Type of Line | kV | 500 |
Miles of Lines | mi | 14 |
Cost Estimate | $ | $ 205 | [2]
Partial rebuild, reconductor and construct new Network Takeoff transmission lines and related projects in the Counties of Fairfax and Loudoun, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-07 |
Approval Date | 2025-03 |
Type of Line | kV | 230 |
Miles of Lines | mi | 6 |
Cost Estimate | $ | $ 170 | [2]
Rebuild Aquia Harbour-Possum Point transmission lines and related projects in the Counties of Stafford and Prince William and the City of Fredericksburg, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-08 |
Approval Date | 2025-03 |
Type of Line | 500-230 kV |
Miles of Lines | mi | 32 |
Cost Estimate | $ | $ 210 | [2]
Partial Rebuild, Reconductor and Construct New New Post Transmission Lines and Related Projects in the Countries of Caroline and Spotsylvania, Virginia [Member] |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-08 |
Approval Date | 2025-05 |
Type of Line | 230 |
Miles of Lines | mi | 38 |
Cost Estimate | $ | $ 120 | [2]
Construct new Centreport transmission line, substation and related projects in Stafford County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-09 |
Approval Date | 2025-06 |
Type of Line | 230 |
Miles of Lines | mi | 3 |
Cost Estimate | $ | $ 55 | [2]
Partial rebuild and construct new Meadowville transmission lines, substations and related projects in Chesterfield County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-10 |
Approval Date | 2025-06 |
Type of Line | 230 |
Miles of Lines | mi | 11 |
Cost Estimate | $ | $ 190 | [2]
Construct new Technology Boulevard transmission lines, substation and related projects in Henrico County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2025-03 |
Type of Line | 230 |
Miles of Lines | mi | 5 |
Cost Estimate | $ | $ 60 | [2]
Construct new Hornbaker transmission lines, switching station and related projects in Prince William County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2025-03 |
Type of Line | kV | 230 |
Miles of Lines | mi | 5 |
Cost Estimate | $ | $ 95 | [2]
Construct new Golden-Mars transmission lines and related projects in Loudoun County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2025-03 |
Type of Line | 500-230 kV |
Miles of Lines | mi | 11 |
Cost Estimate | $ | $ 525 | [2]
Construct new Duval-Midlothian transmission lines, substation and related projects in Chesterfield County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2025-04 |
Type of Line | 230 kV |
Miles of Lines | mi | 7 |
Cost Estimate | $ | $ 125 | [2]
Rebuild Chickahominy-Elmont Transmission Line, New Future Transmission Line and Related Projects in the Countries of Charles City, Henrico and Hanover, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2025-05 |
Type of Line | 500-230 kV |
Miles of Lines | mi | 28 |
Cost Estimate | $ | $ 190 | [2]
Rebuild Septa-Yadkin transmission line, partial rebuild of Suffolk-Thrasher transmission line and related projects in Isle of Wight County and the Cities of Chesapeake and Suffolk, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2025-06 |
Type of Line | 500-230 kV |
Miles of Lines | mi | 33 |
Cost Estimate | $ | $ 250 | [2]
[1] | The final order of the Virginia Commission has been appealed to the Supreme Court of Virginia. This matter is pending.
[2] | Represents the cost estimate included in the application except as updated in the approval if applicable. In addition, Virginia Power had various other transmission projects approved during 2025 or applied for and currently pending approval with aggregate cost estimates of approximately $32 million and $33 million, respectively.

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