# North Anna

PJM Nuclear, Conventional Hydroelectric · https://askthegrid.com/assets/facilities/north-anna

North Anna is a hydroelectric facility with 1,960.4 MW of EIA-reported operating capacity in Louisa County, Virginia, registered as EIA Plant ID 6168. Virginia Electric & Power Co owns and operates the plant. The plant's generating configuration is two three-loop Westinghouse pressurized-water nuclear reactors, plus conventional hydroelectric generation at the North Anna Hydro Power Station. The facility interconnects at North Anna substation.

## Key facts

- Technology: Nuclear, Conventional Hydroelectric
- Power capacity: 1960.4 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: PJM
- Balancing authority: PJM
- Substation: North Anna substation
- Point of interconnection: North Anna substation
- Transmission owner: Virginia Electric & Power Co. (Dominion Energy)

## Source-backed facts

- Owner logo domain: dominionenergy.com — North Anna Power Station | Dominion Energy · confidence: high
- Identifiers: [{"value":"6168","system":"EIA plant ID"},{"value":"1","system":"EIA nuclear generator ID — North Anna Unit 1"},{"value":"2","system":"EIA nuclear generator ID — North Anna Unit 2"},{"value":"PJM","system":"ISO/RTO and balancing authority"},{"value":"812","system":"PJM RPM market-resource ID — NORTH ANNA 1"},{"value":"813","system":"PJM RPM market-resource ID — NORTH ANNA 2"},{"value":"50-338; 50-339","system":"NRC docket numbers — North Anna Units 1 and 2"},{"value":"NPF-4; NPF-7","system":"NRC facility operating license numbers — North Anna Units 1 and 2"}] — Nuclear Reactor Ownership · confidence: medium
- Identifiers: [{"value":"6168","system":"EIA plant ID"},{"value":"1","system":"EIA nuclear generator ID — North Anna Unit 1"},{"value":"2","system":"EIA nuclear generator ID — North Anna Unit 2"},{"value":"PJM","system":"ISO/RTO and balancing authority"},{"value":"812","system":"PJM RPM market-resource ID — NORTH ANNA 1"},{"value":"813","system":"PJM RPM market-resource ID — NORTH ANNA 2"},{"value":"50-338; 50-339","system":"NRC docket numbers — North Anna Units 1 and 2"},{"value":"NPF-4; NPF-7","system":"NRC facility operating license numbers — North Anna Units 1 and 2"}] — Sheet1 · confidence: medium
- Identifiers: [{"value":"6168","system":"EIA plant ID"},{"value":"1","system":"EIA nuclear generator ID — North Anna Unit 1"},{"value":"2","system":"EIA nuclear generator ID — North Anna Unit 2"},{"value":"PJM","system":"ISO/RTO and balancing authority"},{"value":"812","system":"PJM RPM market-resource ID — NORTH ANNA 1"},{"value":"813","system":"PJM RPM market-resource ID — NORTH ANNA 2"},{"value":"50-338; 50-339","system":"NRC docket numbers — North Anna Units 1 and 2"},{"value":"NPF-4; NPF-7","system":"NRC facility operating license numbers — North Anna Units 1 and 2"}] — North Anna Power Station, Unit Nos. 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: medium
- Identifiers: [{"value":"6168","system":"EIA plant ID"},{"value":"1","system":"EIA nuclear generator ID — North Anna Unit 1"},{"value":"2","system":"EIA nuclear generator ID — North Anna Unit 2"},{"value":"PJM","system":"ISO/RTO and balancing authority"},{"value":"812","system":"PJM RPM market-resource ID — NORTH ANNA 1"},{"value":"813","system":"PJM RPM market-resource ID — NORTH ANNA 2"},{"value":"50-338; 50-339","system":"NRC docket numbers — North Anna Units 1 and 2"},{"value":"NPF-4; NPF-7","system":"NRC facility operating license numbers — North Anna Units 1 and 2"}] — 2026 Generation · confidence: medium
- Official project url: https://www.dominionenergy.com/en/About/Making-Energy/Nuclear-Facilities/North-Anna-Power-Station — North Anna Power Station | Dominion Energy · confidence: high
- Owner name: Dominion Energy (Virginia Electric & Power Co.) — Nuclear Reactor Ownership · confidence: medium
- Owner name: Dominion Energy (Virginia Electric & Power Co.) — North Anna Power Station · confidence: medium
- Description: North Anna is an operational power plant in Louisa County, Virginia, with nuclear and conventional hydroelectric generation. Its nuclear station has two three-loop Westinghouse pressurized-water reactors capable of providing nearly 2,000 MW at peak capacity; the separate North Anna Hydro Power Station has 1 MW of generating capacity and was formed in 1987 using outflows from Lake Anna. Virginia Electric & Power Co., operating as Dominion Energy, owns 88.4% of the North Anna nuclear station, while Old Dominion Electric Cooperative owns 11.6%. — North Anna Hydro Power Station | Dominion Energy · confidence: medium
- Description: North Anna is an operational power plant in Louisa County, Virginia, with nuclear and conventional hydroelectric generation. Its nuclear station has two three-loop Westinghouse pressurized-water reactors capable of providing nearly 2,000 MW at peak capacity; the separate North Anna Hydro Power Station has 1 MW of generating capacity and was formed in 1987 using outflows from Lake Anna. Virginia Electric & Power Co., operating as Dominion Energy, owns 88.4% of the North Anna nuclear station, while Old Dominion Electric Cooperative owns 11.6%. — Dominion Energy Receives Regulatory Approval to Extend North Anna Power Station Operations for 20 Years · confidence: medium
- Description: North Anna is an operational power plant in Louisa County, Virginia, with nuclear and conventional hydroelectric generation. Its nuclear station has two three-loop Westinghouse pressurized-water reactors capable of providing nearly 2,000 MW at peak capacity; the separate North Anna Hydro Power Station has 1 MW of generating capacity and was formed in 1987 using outflows from Lake Anna. Virginia Electric & Power Co., operating as Dominion Energy, owns 88.4% of the North Anna nuclear station, while Old Dominion Electric Cooperative owns 11.6%. — North Anna Power Station · confidence: medium
- Canonical name: North Anna — Nuclear Reactor Ownership · confidence: medium
- Canonical name: North Anna — North Anna Power Station | Dominion Energy · confidence: medium
- Identifiers.1: {"value":"1","system":"EIA nuclear generator ID — North Anna Unit 1"} — Nuclear Reactor Ownership · confidence: high
- Identifiers.2: {"value":"2","system":"EIA nuclear generator ID — North Anna Unit 2"} — Nuclear Reactor Ownership · confidence: high
- Identifiers.4: {"value":"812","system":"PJM RPM market-resource ID — NORTH ANNA 1"} — Sheet1 · confidence: high
- Identifiers.5: {"value":"813","system":"PJM RPM market-resource ID — NORTH ANNA 2"} — Sheet1 · confidence: high
- Identifiers.6: {"value":"50-338; 50-339","system":"NRC docket numbers — North Anna Units 1 and 2"} — North Anna Power Station, Unit Nos. 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: high
- Identifiers.7: {"value":"NPF-4; NPF-7","system":"NRC facility operating license numbers — North Anna Units 1 and 2"} — North Anna Power Station, Unit Nos. 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: high
- Parties.0: {"relationship":"Owner (88.4%) and operator","name":"Virginia Electric & Power Co. (Dominion Energy)","official_url":"https://www.dominionenergy.com/"} — Nuclear Reactor Ownership · confidence: high
- Parties.0: {"relationship":"Owner (88.4%) and operator","name":"Virginia Electric & Power Co. (Dominion Energy)","official_url":"https://www.dominionenergy.com/"} — North Anna Power Station | Dominion Energy · confidence: high
- Parties.1: {"relationship":"Co-owner (11.6%)","name":"Old Dominion Electric Cooperative","official_url":"https://www.odec.com/"} — Nuclear Reactor Ownership · confidence: high
- Parties.3: {"relationship":"Nuclear licensing authority","name":"U.S. Nuclear Regulatory Commission","official_url":"https://www.nrc.gov/"} — North Anna Power Station, Unit Nos. 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: high
- Interconnection: North Anna Substation — Dominion Supplemental Projects · confidence: medium
- Site acres: 1000 — Nuclear Facilities · confidence: medium
- Commercial operation date: 1978-06-06 — Source · confidence: medium
- Construction scope: North Anna comprises two Westinghouse three-loop pressurized-water nuclear reactors, rated at approximately 945 MW each (PRIS lists 948 MW for Unit 1 and 944 MW for Unit 2), plus a separate North Anna hydro station formed from two hydroelectric generation units with 1 MW total capacity using Lake Anna outflows. Reported scope also includes Alstom steam-turbine retrofit work on the two nuclear generating units. — North Anna Power Station | Dominion Energy · confidence: medium
- Product url: https://westinghousenuclear.com/nuclear-fuel/pressurized-water-reactor-pwr — Pressurized Water Reactor (PWR) | Westinghouse Nuclear · confidence: medium
- Product url: https://westinghousenuclear.com/nuclear-fuel/pressurized-water-reactor-pwr — PRIS - Reactor Details · confidence: medium
- Product url: https://westinghousenuclear.com/nuclear-fuel/pressurized-water-reactor-pwr — PRIS - Reactor Details · confidence: medium
- Kind: nuclear — North Anna Power Station | Dominion Energy · confidence: medium
- Equipment models.2: {"manufacturer_domain":null,"product_url":null,"count":2,"unit_mw":null,"name":"North Anna hydroelectric generation units — OEM/model not stated"} — North Anna Hydro Power Station | Dominion Energy · confidence: high
- Quality notes: ["The EIA plant total of 1,960.4 MW combines the nuclear and conventional-hydroelectric assets; Dominion separately describes the nuclear units at about 945 MW each and the hydro station at 1 MW.","The reported $3.861 billion figure is the original nuclear construction cost in 2007 dollars, not the consideration for ODEC's 11.6% ownership purchase. The purchase consideration was not stated in the ownership records reviewed.","No unit retirement has occurred in the reported history. NRC license extensions permit Unit 1 to operate through April 1, 2058, and Unit 2 through August 21, 2060; Dominion has described equipment replacements and refurbishments as life-extension upgrades rather than a new repowering project."] — Source · confidence: medium
- Quality notes: ["The EIA plant total of 1,960.4 MW combines the nuclear and conventional-hydroelectric assets; Dominion separately describes the nuclear units at about 945 MW each and the hydro station at 1 MW.","The reported $3.861 billion figure is the original nuclear construction cost in 2007 dollars, not the consideration for ODEC's 11.6% ownership purchase. The purchase consideration was not stated in the ownership records reviewed.","No unit retirement has occurred in the reported history. NRC license extensions permit Unit 1 to operate through April 1, 2058, and Unit 2 through August 21, 2060; Dominion has described equipment replacements and refurbishments as life-extension upgrades rather than a new repowering project."] — Dominion Energy Receives Regulatory Approval to Extend North Anna Power Station Operations for 20 Years · confidence: medium
- Quality notes: ["The EIA plant total of 1,960.4 MW combines the nuclear and conventional-hydroelectric assets; Dominion separately describes the nuclear units at about 945 MW each and the hydro station at 1 MW.","The reported $3.861 billion figure is the original nuclear construction cost in 2007 dollars, not the consideration for ODEC's 11.6% ownership purchase. The purchase consideration was not stated in the ownership records reviewed.","No unit retirement has occurred in the reported history. NRC license extensions permit Unit 1 to operate through April 1, 2058, and Unit 2 through August 21, 2060; Dominion has described equipment replacements and refurbishments as life-extension upgrades rather than a new repowering project."] — North Anna Nuclear Generating Station · confidence: medium
- Quality notes.0: The EIA plant total of 1,960.4 MW combines the nuclear and conventional-hydroelectric assets; Dominion separately describes the nuclear units at about 945 MW each and the hydro station at 1 MW. — Source · confidence: medium
- Quality notes.1: The reported $3.861 billion figure is the original nuclear construction cost in 2007 dollars, not the consideration for ODEC's 11.6% ownership purchase. The purchase consideration was not stated in the ownership records reviewed. — North Anna Nuclear Generating Station · confidence: medium
- Quality notes.2: No unit retirement has occurred in the reported history. NRC license extensions permit Unit 1 to operate through April 1, 2058, and Unit 2 through August 21, 2060; Dominion has described equipment replacements and refurbishments as life-extension upgrades rather than a new repowering project. — Dominion Energy Receives Regulatory Approval to Extend North Anna Power Station Operations for 20 Years · confidence: medium
- Commercial parties.3: {"relationship":"Nuclear licensing authority","name":"U.S. Nuclear Regulatory Commission","detail":"Issued the operating licenses for Units 1 and 2, approved their subsequent 20-year renewal in 2024, and issued combined license NPF-103 for the proposed Unit 3 in 2017.","official_url":"https://www.nrc.gov/"} — Dominion Energy Receives Regulatory Approval to Extend North Anna Power Station Operations for 20 Years · confidence: high
- Commercial parties.4: {"relationship":"Financing agency for ODEC's ownership acquisition","name":"U.S. Department of Agriculture Rural Electrification Administration","detail":"Provided the borrowing program identified as the financing source ODEC used to purchase its 11.6% North Anna interest beginning in 1983.","official_url":"https://www.rd.usda.gov/"} — Old Dominion Electric Cooperative · confidence: medium
- Timeline.0: {"event":"North Anna construction begins","date":"1971-02-19","detail":"Construction began for the original North Anna nuclear units."} — Source · confidence: medium
- Timeline.1: {"event":"Lake Anna dam and cooling reservoir development","date":"1972","detail":"The Lake Anna dam was completed in 1972 to provide cooling water for the nuclear station; the lake reached full height later that year."} — Source · confidence: high
- Timeline.2: {"event":"Unit 1 commercial operation","date":"1978-06-06","detail":"North Anna Unit 1, a Westinghouse three-loop pressurized-water reactor, entered commercial operation."} — North Anna Nuclear Generating Station · confidence: medium
- Timeline.3: {"event":"Unit 2 commercial operation","date":"1980-12-14","detail":"North Anna Unit 2 entered commercial operation."} — North Anna Nuclear Generating Station · confidence: medium
- Timeline.5: {"event":"North Anna hydro station begins operation","date":"1987","detail":"The separate North Anna Hydro Power Station began operating with two hydroelectric generating units using outflows from Lake Anna; its generating capacity is 1 MW."} — Source · confidence: high
- Timeline.6: {"event":"Initial nuclear license renewal","date":"2003","detail":"The NRC renewed the original operating licenses for an additional 20 years, extending the then-current operating horizon for the two units."} — Dominion Energy Receives Regulatory Approval to Extend North Anna Power Station Operations for 20 Years · confidence: high
- Timeline.7: {"event":"Proposed Unit 3 design changed","date":"2010-05","detail":"Virginia Power announced that the proposed third nuclear unit's previously selected reactor design would be replaced with Mitsubishi's US-APWR technology."} — Source · confidence: high
- Timeline.8: {"event":"ODEC exits proposed Unit 3 development","date":"2011-02","detail":"ODEC informed Virginia Power that it would no longer participate in development of the potential third nuclear unit."} — Source · confidence: high
- Timeline.9: {"event":"Virginia Power acquires ODEC's Unit 3 project interest","date":"2011-12","detail":"Virginia Power acquired ODEC's interest in the proposed Unit 3 development, terminating ODEC's participation in that project. This was separate from ODEC's continuing 11.6% ownership of the existing two-unit station."} — Source · confidence: high
- Timeline.11: {"event":"Proposed Unit 3 development suspended","date":"2017","detail":"After obtaining the federal license, Dominion suspended efforts to construct the proposed third reactor in late 2017; the unit was not built."} — North Anna Power Station · confidence: medium
- Timeline.12: {"event":"SMR development evaluation begins","date":"2020","detail":"Dominion began evaluating potential small modular reactor deployment at the North Anna site; the official project description states that no commitment to construction had been made."} — North Anna Power Station | Dominion Energy · confidence: high
- Timeline.13: {"event":"Second license renewal and life-extension program","date":"2024-08-28","detail":"The NRC approved an additional 20 years of operation, extending Unit 1 through 2058 and Unit 2 through 2060. Dominion identified replacement of main generators and condensers, reactor-coolant-pump refurbishment, and instrumentation and control work as longevity upgrades."} — Dominion Energy Receives Regulatory Approval to Extend North Anna Power Station Operations for 20 Years · confidence: high
- Later sale or transfer: No later transfer of the existing North Anna Units 1–2 ownership stake is shown. In December 2011, Virginia Power acquired ODEC’s interest in the proposed Unit 3 project, while the existing units remained jointly owned by Virginia Power/DVP and ODEC; that separate proposed-unit transaction is excluded. — 10-K · confidence: medium
- Transaction scope: ownership_stake — 10-K · confidence: high

## Timeline

- 1971-02-19 — North Anna construction begins
  Construction began for the original North Anna nuclear units.
  Source: Source (https://en.wikipedia.org/wiki/North_Anna_Nuclear_Generating_Station)
- 1980-12-14 — Unit 2 commercial operation
  North Anna Unit 2 entered commercial operation.
  Source: Source (https://en.wikipedia.org/wiki/North_Anna_Nuclear_Generating_Station)
- 1987 — North Anna hydro station begins operation
  The separate North Anna Hydro Power Station began operating with two hydroelectric generating units using outflows from Lake Anna; its generating capacity is 1 MW.
  Source: Source (https://dominionenergy.com/en/About/Making-Energy/Hydroelectric-Power-Facilities/North-Anna-Hydro-Power-Station)
- 2010-05 — Proposed Unit 3 design changed
  Virginia Power announced that the proposed third nuclear unit's previously selected reactor design would be replaced with Mitsubishi's US-APWR technology.
  Source: Source (https://www.nrc.gov/docs/ML1209/ML12090A215.pdf)
- 2017 — Proposed Unit 3 development suspended
  After obtaining the federal license, Dominion suspended efforts to construct the proposed third reactor in late 2017; the unit was not built.
  Source: North Anna Power Station (https://www.virginiaplaces.org/energy/nucleardominion.html)
- 2020 — SMR development evaluation begins
  Dominion began evaluating potential small modular reactor deployment at the North Anna site; the official project description states that no commitment to construction had been made.
  Source: North Anna Power Station | Dominion Energy (https://www.dominionenergy.com/en/About/Making-Energy/Nuclear-Facilities/North-Anna-Power-Station)

## Sources

- [North Anna Power Station](https://www.dominionenergy.com/en/About/Making-Energy/Nuclear-Facilities/North-Anna-Power-Station) — dominionenergy.com · tier other
- [Nuclear Reactor Ownership](https://www.eia.gov/nuclear/reactors/ownership.php) — eia.gov · tier regulatory
- [Sheet1](https://www.pjm.com/-/media/DotCom/markets-ops/rpm/rpm-auction-info/2025-2026/2025-2026-rpm-existing-resource-list-post.xlsx) — pjm.com · tier other
- [North Anna Power Station, Unit Nos. 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission](https://www.nrc.gov/reactors/operating/licensing/power-uprates/pwr-stretch/unit-1-2-north-anna) — nrc.gov · tier regulatory
- [2026 Generation](https://www.eia.gov/nuclear/generation/xls/usreact26.xlsx) — eia.gov · tier regulatory
- [North Anna Hydro Power Station | Dominion Energy](https://www.dominionenergy.com/en/About/Making-Energy/Hydroelectric-Power-Facilities/North-Anna-Hydro-Power-Station) — dominionenergy.com · tier other
- [Dominion Energy Receives Regulatory Approval to Extend North Anna Power Station Operations for 20 Years](https://investors.dominionenergy.com/news/press-release-details/2024/Dominion-Energy-Receives-Regulatory-Approval-to-Extend-North-Anna-Power-Station-Operations-for-20-Years/default.aspx) — investors.dominionenergy.com · tier other
- [Dominion Supplemental Projects](https://www.pjm.com/-/media/DotCom/committees-groups/committees/teac/2026/20260106/20260106-item-07---dom-supplemental-projects.pdf) — pjm.com · tier other
- [Nuclear Facilities](https://www.dominionenergy.com/en/About/Making-Energy/Nuclear-Facilities) — dominionenergy.com · tier other
- [North Anna Nuclear Generating Station](https://en.wikipedia.org/wiki/North_Anna_Nuclear_Generating_Station) — en.wikipedia.org · tier other
- [Pressurized Water Reactor (PWR) | Westinghouse Nuclear](https://westinghousenuclear.com/nuclear-fuel/pressurized-water-reactor-pwr) — westinghousenuclear.com · tier other
- [PRIS - Reactor Details](https://pris.iaea.org/PRIS/CountryStatistics/ReactorDetails.aspx?current=672) — pris.iaea.org · tier other
- [PRIS - Reactor Details](https://pris.iaea.org/PRIS/CountryStatistics/ReactorDetails.aspx?current=673) — pris.iaea.org · tier other
- [Source](https://dominionenergy.com/en/About/Making-Energy/Hydroelectric-Power-Facilities/North-Anna-Hydro-Power-Station) — dominionenergy.com · tier other
- [Old Dominion Electric Cooperative](https://www.virginiaplaces.org/energy/odec.html) — virginiaplaces.org · tier other
- [Source](https://www.nrc.gov/docs/ML1209/ML12090A215.pdf) — nrc.gov · tier regulatory
- [North Anna Power Station](https://www.virginiaplaces.org/energy/nucleardominion.html) — virginiaplaces.org · tier other
- [10-K](https://www.sec.gov/Archives/edgar/data/885568/000095017025040959/ck0000885568-20241231.htm) — sec.gov · tier regulatory
- [North Anna to Bristers](https://www.dominionenergy.com/en/About/Delivering-Energy/Electric-Projects/Power-Line-Projects/North-Anna-Bristers) — dominionenergy.com · tier other
- [Source](https://dominionenergy.com/en/About/Making-Energy/Nuclear-Facilities/North-Anna-Power-Station) — dominionenergy.com · tier other
- [Press Releases](https://news.dominionenergy.com/press-releases/press-releases/2024/Dominion-Energy-Receives-Regulatory-Approval-to-Extend-North-Anna-Power-Station-Operations-for-20-Years-08-28-2024/default.aspx) — news.dominionenergy.com · tier other
- [Articles Tagged with: north anna -- ANS / Nuclear Newswire](https://www.ans.org/news/tag-north%20anna/) — ans.org · tier other
- [Virginia eyes nuclear to power booming data centers](https://virginiabusiness.com/virginia-data-centers-nuclear-energy/) — virginiabusiness.com · tier other

## Data quality

- The EIA plant total of 1,960.4 MW combines the nuclear and conventional-hydroelectric assets; Dominion separately describes the nuclear units at about 945 MW each and the hydro station at 1 MW. The reported $3.861 billion figure is the original nuclear construction cost in 2007 dollars, not the consideration for ODEC's 11.6% ownership purchase. The purchase consideration was not stated in the ownership records reviewed. No unit retirement has occurred in the reported history. NRC license extensions permit Unit 1 to operate through April 1, 2058, and Unit 2 through August 21, 2060; Dominion has described equipment replacements and refurbishments as life-extension upgrades rather than a new repowering project.

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Canonical page: https://askthegrid.com/assets/facilities/north-anna

Source: Ask the Grid — https://askthegrid.com/