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Regulatory Matters - Summary of Virginia Power Electric Transmission Project Applied (Detail) - Virginia Electric and Power Company $ in Millions | 9 Months Ended
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Sep. 30, 2024 USD ($) mi kV
Construct new Germanna substation, transmission line and related projects in Culpeper County, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2023-11 |
Approval Date | 2024-08 |
Type of Line | 230 kV |
Miles of Lines | mi | 2 |
Cost Estimate | $ | $ 55 | [1]
Construct Daves Store Transmission Line Extension In Prince William County, Virginia. |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-02 |
Approval Date | 2024-10 |
Type of Line | 230 kV |
Miles of Lines | mi | 3 |
Cost Estimate | $ | $ 70 | [1]
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 |
Type of Line | 500-230 kV |
Miles of Lines | mi | 10 |
Cost Estimate | $ | $ 690 | [1]
Partial rebuild Fredericksburg-Aquia Harbour transmission lines and related projects in Stafford County and the City of Fredericksburg, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-03 |
Type of Line | 230-115 kV |
Miles of Lines | mi | 24 |
Cost Estimate | $ | $ 135 | [1]
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 |
Type of Line | kV | 230 |
Miles of Lines | mi | 2 |
Cost Estimate | $ | $ 285 | [1]
Rebuild Dooms-Harrisonburg transmission lines and related projects in the Counties of Augusta and Rockingham and the Town of Grottoes, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-04 |
Type of Line | kV | 230 |
Miles of Lines | mi | 22 |
Cost Estimate | $ | $ 60 | [1]
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 |
Type of Line | kV | 500 |
Miles of Lines | mi | 14 |
Cost Estimate | $ | $ 205 | [1]
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 |
Type of Line | kV | 230 |
Miles of Lines | mi | 6 |
Cost Estimate | $ | $ 170 | [1]
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 |
Type of Line | 500-230 kV |
Miles of Lines | mi | 32 |
Cost Estimate | $ | $ 210 | [1]
Partial rebuild, reconductor and construct new New Post transmission lines and related projects in the Counties of Caroline and Spotsylvania, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-08 |
Type of Line | kV | 230 |
Miles of Lines | mi | 38 |
Cost Estimate | $ | $ 120 | [1]
Construct new centreport transmission line, substation and related projects in stafford county, Virginia |  |
Public Utilities General Disclosures [Line Items] |  |
Application Date | 2024-09 |
Type of Line | kV | 230 |
Miles of Lines | mi | 3 |
Cost Estimate | $ | $ 55 | [1]
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 |
Type of Line | kV | 230 |
Miles of Lines | mi | 11 |
Cost Estimate | $ | $ 190 | [1]
[1] | 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 or applied for and currently pending approval with aggregate cost estimates of approximately $145 million and $55 million, respectively.

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