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980.8 MW Nuclear out of service in Dauphin, PA
980.8 MW
Nameplate Capacity
1
Generators
unit
Nuclear
Technology
1974
Operating Since
Coordinates
40.1515, -76.7232
County
Dauphin, PA
Nearby Plants
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Request a demo →Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Constellation Nuclear | Exelon Generation | Exelon |
| Owner(s) | Constellation Nuclear | Exelon | Exelon |
| Status | Out of service | retired | — |
Three Mile Island Nuclear Generating Station, is a shut-down nuclear power plant on Three Mile Island in Pennsylvania, US, on the Susquehanna River just south of Harrisburg. It has two separate units, Unit 1 (TMI-1) and Unit 2 (TMI-2).
Read more on WikipediaCrane Clean Energy Center is a 980.8 MW nuclear power plant located in Dauphin County, Pennsylvania. The plant, which began operating in 1974, has one generator and is owned by Exelon. Constellation Nuclear is the listed operator per EIA data. Crane Clean Energy Center is the 5th largest power plant in Pennsylvania and ranks 46th nationally among nuclear facilities.
The plant operates within the PJM Interconnection market and balancing authority, and is located within the RFC NERC region. The latest available annual generation data indicates an output of 5,214,196 MWh, achieving a capacity factor of 73.0%.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC (PJM)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
0 MWh
Latest Month
5.2M MWh
Annual Generation
73.0%
Capacity Factor
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Nearest Substation
TMI 230 kV Substation · 230 kV
Substation Distance
< 10 km
Operator
FirstEnergy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
20111201
Pricing Hub
WESTERN HUB
Node Source
EIA-860 direct report
Last updated 2026-04-19
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