James A Fitzpatrick
Constellation Energy Generation, LLCOswego County
Overview
- Registry anchor
- Plant 6110
- plant-6110
Infrastructure record
- Alternate name
- James A. FitzPatrick Nuclear Power Plant
- Mapped facility footprint
- Mapped infrastructure footprint
Mapped infrastructure geometry associated with this asset.
- In service
- 1976-08
Structured profile
- Technology
- Nuclear
- Operator
- Constellation Energy Generation, LLC
Generation and physical site
EIA plant 6110 · Inventory for Sep 2026.
Reported operating nameplate by technology
- Nuclear
- 883.3 MW
Generator records (1)
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Nuclear | Operating | 883.3 | Unknown |
- Physical map location · OpenStreetMap
- 43.52231, -76.39745
- Filed location · EIA
- 43.52139, -76.40839
Sources and observation dates
Related assets
Similar plants ranked by technology, capacity, and distance.
Units and generators
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 883.3 MW 844 MW summer | Nuclear ST | Aug 1976 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 883.3 MW
- Nuclear
- National rank
- #50
- of 54 operating peers
- NY rank
- #2
- of 3 operating peers
Monthly generation
Download CSVLatest 12 months
7.37 TWh
Reported net generation
Latest report
Jul 2026
EIA-923 monthly filing
2025 capacity factor
95.8%
Using current reported nameplate capacity
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 inventoryIN SERVICE · 345 kV
0.2 km
Commercial, 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
Construction Start
1969
The New York Power Authority's official timeline states that construction began on the James A. FitzPatrick Nuclear Power Plant (820,000 kW) on the shores of Lake Ontario near Oswego.
Power Authority of the State of New York (NYPA)
Commercial Operation
Jul 28, 1975
The James A. FitzPatrick Nuclear Power Plant entered commercial operation.
Power Authority of the State of New York (NYPA) · Niagara Mohawk Power Corporation
Closure Announcement
Nov 2, 2015
Entergy announced that FitzPatrick would be closed due to economic pressures, despite the operating license running through October 17, 2034.
Entergy Nuclear FitzPatrick, LLC / Entergy Nuclear Operations, Inc.
License Transfer
Nov 7, 2017
The NRC approved a direct transfer of the James A. FitzPatrick Renewed Facility Operating License DPR-59 and the associated Independent Spent Fuel Storage Installation (ISFSI) general license from Exelon Generation Company, LLC to its wholly owned subsidiary, Exelon FitzPatrick, LLC. Exelon Generation remained responsible for operation and maintenance.
Exelon Generation Company, LLC · Exelon FitzPatrick, LLC · U.S. Nuclear Regulatory Commission
Corporate Separation
Feb 1, 2022
Exelon completed the separation of its competitive generation and customer-facing energy businesses into Constellation Energy, now an independent, publicly traded company. Constellation Energy Generation, LLC (formerly Exelon Generation Company, LLC) is now the owner and operator of James A. FitzPatrick. Exelon no longer retains ownership interest in Constellation.
Exelon Corporation · Constellation Energy Generation, LLC
Regulatory Exemption
Nov 12, 2024
The NRC issued an exemption in response to Constellation's December 7, 2023 request, allowing timely-renewal protection if Constellation submits a subsequent license-renewal application (SLRA) at least 3 years prior to the expiration of the existing operating license. If an acceptable SLRA is submitted by October 17, 2031, the current license will not expire until the NRC makes a final determination on the SLRA. The current license expires October 17, 2034.
Constellation Energy Generation, LLC · U.S. Nuclear Regulatory Commission
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
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AssetOwner / operatorMarket / regulatorOrganizationRelated asset
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Construction Begannypa.gov
The New York Power Authority's official timeline states that construction began on the James A. FitzPatrick Nuclear Power Plant (820,000 kW) on the shores of Lake Ontario near Oswego.