# Peach Bottom

PJM asset profile · https://askthegrid.com/assets/facilities/peach-bottom

## Current generation inventory

EIA plant 3166 · Inventory reporting month: 2026-09.

- nuclear: 2876.4 MW operating nameplate
- Capacity basis: operating_generator_nameplate_mw
- Source inventory: [EIA-860M workbook (preliminary)](https://www.eia.gov/electricity/data/eia860m/xls/september_generator2026.xlsx)
- Inventory retrieved: 2026-10-24T16:00:14.685130+00:00
- Filed coordinate (longitude, latitude): -76.26874, 39.758936
- OSM extract: 2026-10-09T20:21:04Z
- OSM mapped edit: 2025-12-24 06:06:05+00:00
- Map prepared: 2026-10-24T16:02:01.617546+00:00

Battery power (MW) and stored energy (MWh) are separate measures. Shared physical-site membership does not establish electrical connectivity, settlement or a common export limit.

## Reviewed overview

Peach Bottom, in York County, Pennsylvania, is a two-unit boiling water reactor plant that can generate 2,770 MW. Constellation owns half and operates it; PSEG owns the other half. Units 2 and 3 began operating in 1974 and gained an extended power uprate approved in 2014. On September 30, 2025 the NRC restored their subsequent renewed licenses to August 8, 2053 and July 2, 2054, making Peach Bottom licensed for up to 80 years. Unit 1, an HTGR shut in 1974, remains in SAFSTOR.

## Reviewed metrics

- **Nameplate capacity:** 2876.4 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 3166 — plant-3166

## Facts

- **Technology:** Nuclear

## Related parties

- **Transmission owner:** PECO Energy Company — transmission_owner ([source](https://www.peco.com))
- **Balancing authority:** PJM Interconnection — balancing_authority ([source](https://www.pjm.com))

## Sources

- [constellationenergy.com](https://www.constellationenergy.com/our-company/locations/location-sites/peach-bottom-atomic-power-station.html) — constellationenergy.com · public_source — Source retained for exact-record publication review.
- [govinfo.gov](https://www.govinfo.gov/content/pkg/FR-2025-12-31/html/2025-24101.htm) — govinfo.gov · authoritative — Source retained for exact-record publication review.
- [puc.pa.gov](https://www.puc.pa.gov/pcdocs/1893047.pdf) — puc.pa.gov · authoritative — Source retained for exact-record publication review.
- [world-nuclear-news.org](https://www.world-nuclear-news.org/articles/uprates-approved-for-peach-bottom-reactors) — world-nuclear-news.org · public_source — Source retained for exact-record publication review.

---

Canonical page: https://askthegrid.com/assets/facilities/peach-bottom
Website: [Constellation Energy Generation, LLC](https://www.constellationenergy.com)

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