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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, 2023 USD ($) mi kV
Partial rebuild of Bristers-Ox 115 kV line in Fauquier and Prince William Counties, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-08
Approval Date | 2023-04
Type of Line | kV | 230,000,000
Miles of Lines | mi | 15,000,000
Cost Estimate | $ | $ 40
Construct new switching station, substations, transmission lines and related projects in Lunenberg and Mecklenburg Counties Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-10
Approval Date | 2023-06
Type of Line | kV | 230,000,000
Miles of Lines | mi | 18,000,000
Cost Estimate | $ | $ 230
Construct new switching station, substation, transmission lines and related projects in Charlotte, Halifax and Mecklenburg Counties, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-10
Approval Date | 2023-05
Type of Line | kV | 230,000,000
Miles of Lines | mi | 26,000,000
Cost Estimate | $ | $ 215
Construct new Mars and Wishing Star substations, transmission lines and related projects in Loudoun County, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-10
Approval Date | 2023-04
Type of Line | 500/230 kV
Miles of Lines | mi | 4
Cost Estimate | $ | $ 720
Construct new Altair switching station, transmission lines and related projects in Loudoun County, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-11
Approval Date | 2023-06
Type of Line | 230
Miles of Lines | mi | 2
Cost Estimate | $ | $ 50
Construct new Cirrus and Keyser switching stations, transmission lines and related projects in Culpeper, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2022-11
Approval Date | 2023-10
Type of Line | 230
Miles of Lines | mi | 5
Cost Estimate | $ | $ 65
Rebuild of Lines #2019 and #2007 in the City of Virginia Beach, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2023-02
Approval Date | 2023-08
Type of Line | kV | 230,000,000
Miles of Lines | mi | 5
Cost Estimate | $ | $ 95
Install transformer at Possum Point substation, rebuild and construct transmission lines and related projects in Prince William County, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2023-03
Type of Line | kV | 230
Miles of Lines | mi | 2
Cost Estimate | $ | $ 35
Partial rebuild of Line #2011 in the Cities of Manassas and Manassas Park, Virginia and Prince William and Fairfax Counties, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2023-03
Approval Date | 2023-10
Type of Line | kV | 230
Miles of Lines | mi | 7
Cost Estimate | $ | $ 35
Construct new transmission lines and convert Jeffress switching station in Mecklenburg County, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2023-05
Type of Line | kV | 230
Miles of Lines | mi | 18
Cost Estimate | $ | $ 135
Construct new transmission lines and expand White Oak substation in Henrico County, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2023-06
Type of Line | kV | 230
Miles of Lines | mi | 5
Cost Estimate | $ | $ 45
Rebuild Line #235 in Halifax, Mecklenburg and Charlotte Counties, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2023-08
Type of Line | 230
Miles of Lines | mi | 16
Cost Estimate | $ | $ 35
Partial rebuild Line #249 in Dinwiddie County and the City of Petersburg, Virginia |
Public Utilities General Disclosures [Line Items] |
Application Date | 2023-09
Type of Line | 230
Miles of Lines | mi | 7
Cost Estimate | $ | $ 25

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