Peach Bottom is a nuclear power facility with 2,876.4 MW of EIA-reported nameplate capacity in York County, Pennsylvania, registered as EIA Plant ID 3166. Constellation Nuclear is the registered plant entity or operator. The plant's generating configuration is two operating General Electric Type 4, Mark I boiling-water reactors (Units 2 and 3), nuclear.
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Primary generation technology.
Constellation Nuclear · York County · PJM
Peach Bottom is currently operating; a closure or retirement is listed for October 31, 1974.
500 kV · PECO Energy Company (PECO)
Nuclear
Peach Bottom is currently operating; a closure or retirement is listed for October 31, 1974.
Peach Bottom is currently operating; a closure or retirement is listed for October 31, 1974.
500 kV · PECO Energy Company (PECO)
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 2 | 1,499.4 MW 1,264.7 MW summer | Nuclear Nuclear · ST | Jul 1974 | Operating |
| 3 | 1,377 MW 1,284.7 MW summer | Nuclear Nuclear · ST | Dec 1974 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Drag organizations to explore the network. Select a node to pin its details and available page link.
Project milestones and public references behind the asset profile.
Station history records list construction of Units 2 and 3 as beginning on January 31, 1968.
PJM
PJM · York County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Peach BottomCurrent | 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 portfolioEIA-860 lists generator 2 with this operating date.
EIA-860 lists generator 3 with this operating date.
PSEG Power completed acquisition of 82 MW share of Peach Bottom as part of three-plant nuclear-asset transaction from Atlantic City Electric Company. Total package consideration $22 million including nuclear fuel; amount not allocated specifically to Peach Bottom.
The NRC approved a further MUR uprate, increasing the maximum licensed thermal power for each unit from 3,951 MWt to 4,016 MWt.
The NRC approved a second 20-year license renewal, authorizing operation through 2053 for Unit 2 and 2054 for Unit 3.
Exelon completed the separation of its competitive generation business; Constellation Energy Generation, formerly Exelon Generation Company, became the corporate successor holding Exelon Generation’s 50% Peach Bottom interest and operating role.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Peach Bottom has a reported capacity of 2,876.4 MW. Source: EIA Form 860.
Peach Bottom is a nuclear facility in York County, PA, participating in the PJM market.
Peach Bottom is in York County, PA, inside the PJM balancing area.
Peach Bottom is operated by Constellation Nuclear according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Peach Bottom reported 21,944.1 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
Peach Bottom interconnects at Peach Bottom North and Peach Bottom South substations, on the PECO Energy Company (PECO) system.
By capacity, Peach Bottom ranks #4 of 54 operating plants of the same technology nationally. It ranks #1 of 4 in PA.
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.
