# Christopher M. Crane Clean Energy Center

PJM asset profile · https://askthegrid.com/assets/facilities/christopher-m-crane-clean-energy-center

Constellation Energy Generation, LLC - Dauphin County - PJM

The Christopher M. Crane Clean Energy Center, formerly Three Mile Island Nuclear Station, Unit 1, is a single pressurized-water nuclear reactor located in Dauphin County, Pennsylvania, on Three Mile Island in the Susquehanna River. Originally licensed in 1974 and renewed through 2034, the facility permanently ceased operations in September 2019 for economic reasons. Constellation Energy Generation, LLC currently owns and operates the unit and is pursuing NRC approval for restart. NRC licensing actions are underway, with Constellation targeting service restoration as early as 2027, pending regulatory approval and completion of component restoration and upgrades.

## Metrics

- **Nameplate capacity:** 980.8 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 8011 — plant-8011

## Facts

- **Technology:** Nuclear
- **Operator:** Constellation Energy Generation, LLC

## Related parties

- **Owner / operator:** Constellation Energy Generation, LLC — Owner and NRC licensee ([source](https://www.constellationenergy.com/))
- **Former owner / operator:** AmerGen Energy, LLC — Predecessor owner and operator
- **Offtaker:** Microsoft Corporation — Power purchaser/offtaker ([source](https://www.microsoft.com/))
- **Regulator:** U.S. Nuclear Regulatory Commission — Nuclear regulator ([source](https://www.nrc.gov/))
- **Lender:** U.S. Department of Energy, Office of Energy Dominance Financing — Federal lender ([source](https://www.energy.gov/))
- **Regulatory counterparty:** Pennsylvania Department of Environmental Protection — State environmental regulator ([source](https://www.pa.gov/agencies/dep))
- **Balancing authority / market operator:** PJM Interconnection, LLC — Balancing authority and market operator ([source](https://www.pjm.com/))

## Sources

- [world-nuclear.org](https://world-nuclear.org/nuclear-reactor-database/details/Three-Mile-Island-1) — world-nuclear.org · public_source — Source retained for exact-record publication review.
- [constellationenergy.com](https://www.constellationenergy.com/about/locations/crane-clean-energy-center.html) — constellationenergy.com · public_source — Source retained for exact-record publication review.
- [constellationenergy.com](https://www.constellationenergy.com/news/2024/Constellation-to-Launch-Crane-Clean-Energy-Center-Restoring-Jobs-and-Carbon-Free-Power-to-The-Grid.html) — constellationenergy.com · public_source — Source retained for exact-record publication review.
- [cumberlandcountypa.gov](https://www.cumberlandcountypa.gov/DocumentCenter/View/1356) — cumberlandcountypa.gov · authoritative — Source retained for exact-record publication review.
- [energy.gov](https://www.energy.gov/edf/crane-restart) — energy.gov · authoritative — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/christopher-m-crane-clean-energy-center
Website: [Constellation Energy Generation, LLC](https://www.constellationenergy.com/)

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