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Regulatory Matters - Summary of Virginia Power Electric Transmission Project Applied (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) mi kV
Rebuild and operate between Lanexa and the Northern Neck in Virginia |
Public Utilities, General Disclosures [Line Items] |
Capacity of transmission line (kV) | kV | 230
The total estimated capital investment | $ | $ 30
Virginia Electric and Power Company | Build a new substation and connect three existing transmission lines thereto in Fluvanna County, Virginia |
Public Utilities, General Disclosures [Line Items] |
Capacity of transmission line (kV) | kV | 230
Virginia Electric and Power Company | Rebuild and operate the Glebe substation and relocate and operate in Arlington County, Virginia and the City of Alexandria, Virginia existing overhead line underground |
Public Utilities, General Disclosures [Line Items] |
Capacity of transmission line (kV) | kV | 230
Virginia Electric and Power Company | Rebuild and operate between Valley, Virginia and Mt. Storm, West Virginia |
Public Utilities, General Disclosures [Line Items] |
Capacity of transmission line (kV) | kV | 500
Virginia Electric and Power Company | Rebuild and operate between the Suffolk and the Virginia/North Carolina state line |
Public Utilities, General Disclosures [Line Items] |
Capacity of transmission line (kV) | kV | 230
Virginia Electric and Power Company | Rebuild and operate five segments between the Loudoun and Ox substations |
Public Utilities, General Disclosures [Line Items] |
Capacity of transmission line (kV) | kV | 230
Virginia Electric and Power Company | Build new switching station and line loop in Loudon County, Virginia (Evergreen Mills) |
Public Utilities, General Disclosures [Line Items] |
Capacity of transmission line (kV) | kV | 230
Virginia Electric and Power Company | Build new substation and line loop in Loudon County, Virginia (Lockridge) |
Public Utilities, General Disclosures [Line Items] |
Capacity of transmission line (kV) | kV | 230
Virginia Electric and Power Company | Virginia Regulation | Rebuild and operate between Lanexa and the Northern Neck in Virginia |
Public Utilities, General Disclosures [Line Items] |
Application Date | 2018-06
Length of kV line (miles) | mi | 3
Virginia Electric and Power Company | Virginia Regulation | Build a new substation and connect three existing transmission lines thereto in Fluvanna County, Virginia |
Public Utilities, General Disclosures [Line Items] |
Approval Date | 2019-06
Length of kV line (miles) | mi | 1
The total estimated capital investment | $ | $ 30
Virginia Electric and Power Company | Virginia Regulation | Rebuild and operate the Glebe substation and relocate and operate in Arlington County, Virginia and the City of Alexandria, Virginia existing overhead line underground |
Public Utilities, General Disclosures [Line Items] |
Application Date | 2019-03
Length of kV line (miles) | mi | 1
The total estimated capital investment | $ | $ 125
Virginia Electric and Power Company | Virginia Regulation | Rebuild and operate between Valley, Virginia and Mt. Storm, West Virginia |
Public Utilities, General Disclosures [Line Items] |
Application Date | 2019-04
Approval Date | 2019-11
Length of kV line (miles) | mi | 65
The total estimated capital investment | $ | $ 290
Virginia Electric and Power Company | Virginia Regulation | Rebuild and operate between the Suffolk and the Virginia/North Carolina state line |
Public Utilities, General Disclosures [Line Items] |
Application Date | 2019-05
Approval Date | 2019-11
Length of kV line (miles) | mi | 11
The total estimated capital investment | $ | $ 20
Virginia Electric and Power Company | Virginia Regulation | Rebuild and operate five segments between the Loudoun and Ox substations |
Public Utilities, General Disclosures [Line Items] |
Application Date | 2019-08
Approval Date | Pending
Length of kV line (miles) | mi | 19
The total estimated capital investment | $ | $ 70
Virginia Electric and Power Company | Virginia Regulation | Build new switching station and line loop in Loudon County, Virginia (Evergreen Mills) |
Public Utilities, General Disclosures [Line Items] |
Approval Date | Pending
Length of kV line (miles) | mi | 2
Virginia Electric and Power Company | Virginia Regulation | Build new substation and line loop in Loudon County, Virginia (Lockridge) |
Public Utilities, General Disclosures [Line Items] |
Application Date | 2019-12
Approval Date | Pending
Length of kV line (miles) | mi | 1
The total estimated capital investment | $ | $ 30
Virginia Electric and Power Company | Virginia Regulation | Rebuild of overhead transmission lines between Chesterfield Substation and Tyler Substation in Chesterfield County, Virginia |
Public Utilities, General Disclosures [Line Items] |
The total estimated capital investment | $ | $ 35

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