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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2019
Public Utilities, General Disclosures [Line Items] |
Summary of Additional Significant Riders Associated with Virginia Power Projects |
• | Additional significant riders associated with various Virginia Power projects are as follows:
Rider Name |  | Application Date |  |  | Approval Date |  |  | Rate Year Beginning |  |  | Total Revenue Requirement (millions) |  |  | Increase (Decrease) Over Previous Year (millions) |
Rider S |  |  | May 2019 |  |  |  | February 2020 |  |  |  | April 2020 |  |  |  | $195 |  |  |  | $(20 | )
Rider GV |  |  | May 2019 |  |  |  | February 2020 |  |  |  | April 2020 |  |  |  | 132 |  |  |  | 12 |
Rider W |  |  | May 2019 |  |  |  | February 2020 |  |  |  | April 2020 |  |  |  | 106 |  |  |  | 1 |
Rider R |  |  | May 2019 |  |  |  | February 2020 |  |  |  | April 2020 |  |  |  | 44 |  |  |  | (13 | )
Rider B |  |  | May 2019 |  |  |  | February 2020 |  |  |  | April 2020 |  |  |  | 32 |  |  |  | (6 | )
Rider US-3 |  |  | July 2019 |  |  |  | Pending |  |  |  | June 2020 |  |  |  | 31 |  |  |  | 21 |
Rider BW |  |  | October 2019 |  |  |  | Pending |  |  |  | September 2020 |  |  |  | 120 |  |  |  | 1 |
Rider US-2 |  |  | October 2019 |  |  |  | Pending |  |  |  | September 2020 |  |  |  | 10 |  |  |  | (5 | )
Rider E |  |  | January 2020 |  |  |  | Pending |  |  |  | November 2020 |  |  |  | 88 |  |  |  | (16 | )
Summary of Additional Significant Virginia Power Electric Transmission Projects Approved and Applied | Additional significant Virginia Power electric transmission projects approved or applied for are as follows:
Description and Location of Project |  | Application Date |  |  | Approval Date |  |  | Type of Line |  |  | Miles of Lines |  |  | Cost Estimate (millions) |
Rebuild and operate transmission line between Lanexa and the Northern Neck in Virginia |  |  | June 2018 |  |  |  | February 2019 |  |  |  | 230 kV |  |  |  | 3 |  |  |  | $ 30 |
Build a new substation and connect three existing transmission lines thereto in Fluvanna County, Virginia |  |  | October 2018 |  |  |  | June 2019 |  |  |  | 230 kV |  |  |  | <1 |  |  |  | 30 |
Rebuild and operate the Glebe substation and relocate and operate in Arlington County, Virginia and the City of Alexandria, Virginia existing overhead line underground |  |  | March 2019 |  |  |  | September 2019 |  |  |  | 230 kV |  |  |  | <1 |  |  |  | 125 |
Rebuild and operate transmission line between Valley, Virginia and Mt. Storm, West Virginia |  |  | April 2019 |  |  |  | November 2019 |  |  |  | 500 kV |  |  |  | 65 |  |  |  | 290 |
Rebuild and operate transmission line between the Suffolk substation and the Virginia/North Carolina state line |  |  | May 2019 |  |  |  | November 2019 |  |  |  | 230 kV |  |  |  | 11 |  |  |  | 20 |
Rebuild and operate five segments between the Loudoun and Ox substations |  |  | August 2019 |  |  |  | Pending |  |  |  | 230 kV |  |  |  | 19 |  |  |  | 70 |
Build new Evergreen Mills switching station and line loops in Loudoun County, Virginia |  |  | December 2019 |  |  |  | Pending |  |  |  | 230 kV |  |  |  | 2 |  |  |  | 30 |
Build new Lockridge substation and line loop in Loudoun County, Virginia |  |  | December 2019 |  |  |  | Pending |  |  |  | 230 kV |  |  |  | <1 |  |  |  | 35 |

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