R E Ginna Nuclear Power Plant
Constellation Energy Generation, LLC - Wayne County - NYISO
R.E. Ginna Nuclear Power Plant, also marketed as the R.E. Ginna Clean Energy Center, is a single-unit Westinghouse pressurized-water reactor near Ontario in Wayne County, New York. It began commercial operation in July 1970 and is currently operated by Constellation Energy Generation, LLC under NRC Facility Operating License No. DPR-18. The facility can produce up to 576 MW of electricity and is located on 426 acres along the south shore of Lake Ontario. The current operating license expires September 18, 2029, and a subsequent renewal application was filed in June 2026 for an additional 20-year operating term.
Overview
Key fields
- Nameplate capacity
- 614 MW
Canonical EIA plant baseline.
- Registry anchor
- Plant 6122
plant-6122
Structured profile
- Technology
- Nuclear
- Operator
- Constellation Energy Generation, LLC
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 614 MW 581.5 MW summer | Nuclear Nuclear · ST | Jul 1970 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 614 MW
- National rank
- #54
- NY rank
- #3
Monthly generation
Download CSVMonthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Nearby substations
HIFLD infrastructure inventoryCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Transactions and agreements
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
Drag organizations to explore the network. Select a node to pin its details and available page link.
Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Owner / operator | Owner, licensee, and operator | |
| Former owner | Rochester Gas and Electric Corporation | Original owner and seller |
| Regulator | Nuclear regulatory authority | |
| Construction contractor / equipment supplier | Prime contractor; NSSS, turbine, and condenser supplier | |
| Grid selection | plant:plant-6122 | Canonical asset page /nyiso/assets/plant/r-e-ginna-nuclear-power-plant. |
Reporting portfolio
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Peach Bottom | 2,876.4 MW | PA | |
| Braidwood Generation Station | 2,449.8 MW | IL | |
| Byron Generating Station | 2,449.8 MW | IL | |
| LaSalle Generating Station | 2,340 MW | IL | |
| Limerick | 2,277 MW | PA | |
| Quad Cities Generating Station | 2,018.6 MW | IL | |
| Dresden Generating Station | 2,018.6 MW | IL | |
| Nine Mile Point Nuclear Station | 1,901.1 MW | NY |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioTimeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Construction permit and operating license application filednrc.gov
Rochester Gas and Electric filed the application for a construction permit and operating license.
- Construction Permit Issuednrc.gov
The NRC issued the construction permit for the R.E. Ginna Nuclear Power Plant.
- Initial provisional operating license issuednrc.gov
The NRC issued the initial provisional operating license for the R.E. Ginna Nuclear Power Plant.
- Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
- Commercial Operation Beginsnrc.gov
Ginna Station began commercial operation at 1,300 MWt licensed thermal power and 420 MW net electrical output.
- Initial Power Increasenrc.gov
Licensed thermal output increased to 1,520 MWt and net electrical output increased to 490 MW.
- New York PSC approves Ginna transfer to Constellationdocuments.d...
The New York Public Service Commission issued an order approving the transfer of Ginna from Rochester Gas & Electric to Constellation Energy entities, finding the sale in the public interest.
- Ginna Acquisition Completednucnet.org
Constellation Energy completed its acquisition of the R.E. Ginna Nuclear Power Plant from Rochester Gas and Electric for $401 million (excluding $21.6 million for purchased nuclear fuel and the $202 million decommissioning fund transfer).
- Extended power uprate approvednrc.gov
NRC Amendment No. 97 approved a 16.8% extended power uprate, increasing steady-state thermal power from 1,520 MWt to 1,775 MWt and the design electrical rating from 470 MW to 585 MW; project was completed during the October 2006 refueling outage.
- Direct operating-authority transfer to Exelon Generationnrc.gov
NRC approved direct transfer of operating authority to Exelon Generation. The order states that ownership was not affected and that no physical or day-to-day operational changes were proposed.
- EDF put option announcement for 49.99% CENG stakeconstellati...
Exelon Generation announced that EDF was exercising its put option to sell its 49.99% indirect interest in Ginna and other jointly owned nuclear facilities. The announcement stated that the purchase would have no impact on plant operations or employees.
- Exelon completes acquisition of EDF's CENG stakeenerdata.net
Exelon Generation completed its acquisition of EDF's 49.99% interest in CENG for $885 million, making Exelon the sole CENG shareholder and 100% indirect owner of Ginna.
- Subsequent license-renewal application filedfederalregi...
Constellation Energy Generation, LLC submitted an application seeking authorization to operate Ginna for an additional 20 years beyond the current license term, which expires September 18, 2029.
Sources
Common questions about R E Ginna Nuclear Power Plant
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
How big is R E Ginna Nuclear Power Plant?
R E Ginna Nuclear Power Plant has a reported capacity of 614 MW. Source: EIA Form 860M.
What kind of plant is R E Ginna Nuclear Power Plant?
R E Ginna Nuclear Power Plant is a nuclear facility in Wayne County, NY, participating in the NYISO market.
Where is R E Ginna Nuclear Power Plant located?
R E Ginna Nuclear Power Plant is in Wayne County, NY, inside the NYISO balancing area.
Who operates R E Ginna Nuclear Power Plant?
R E Ginna Nuclear Power Plant is operated by Constellation Nuclear according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
How much electricity does R E Ginna Nuclear Power Plant generate?
R E Ginna Nuclear Power Plant reported 4,709.7 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
How does R E Ginna Nuclear Power Plant compare to other plants?
By capacity, R E Ginna Nuclear Power Plant ranks #54 of 54 operating plants of the same technology nationally. It ranks #3 of 3 in NY.
Co-located assets
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
Related assets
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