Crane Clean Energy Center (Three Mile Island)
Middletown, Dauphin County County, PA
Source: Primary source
Crane Clean Energy Center (Three Mile Island) is a under construction data center in Dauphin County County, PA, operated by Constellation Energy. DataCentersExposed has documented 835 MW of reported power capacity at this site.
Reporting by Eric Keller · Updated Jun 18, 2026
Overview
source: linkTMI Unit 1 restart (835MW) under 20-yr Microsoft PPA; online 2028.
Operator chain
- Files asConstellation Energy
- This facilityCrane Clean Energy Center (Three Mile Island)
Grid & water — why here
source: HIFLD · EPAThe closest existing grid infrastructure and the municipal water system this location sits in — the same constraints the buildout model screens on (it won't site a campus more than ~2 km from a substation or ~5 km from municipal water). Distances are straight-line to public HIFLD/EPA features, not a metered connection.
In the news
source: Google News- Constellation Energy tops profit estimates on strong power demand, Calpine boostBNN Bloomberg· May 11, 2026
- PJM market monitor opposes waivers for Constellation’s Three Mile Island nuclear restartUtility Dive· Apr 23, 2026
- Constellation Energy tops profit estimates on robust data center-driven power demandBNN Bloomberg· Feb 24, 2026
- Three Mile Island, site of 1979 nuclear reactor accident, reopening to power AIABC News - Breaking News, Latest News and Videos· Feb 11, 2026
- Three Mile Island Restarts in U.S. Nuclear Revival조선일보· Dec 4, 2025
- Trump administration backs Three Mile Island nuclear restart with $1 billion loan to ConstellationCNBC· Nov 18, 2025
Tax breaks & subsidies
source: Good Jobs First / GASB 77No per-deal tax break is linked to this site yet. No state discloses the recipient of a data-center abatement at the facility level, so per-site deals are rare in the public record. If you have a development agreement or board resolution for this site, send it to us.
Water use
No public record of this facility's water use. We check state withdrawal reporting for self-supplied sites; municipally supplied sites only become visible through a public-records request to the local water utility — a per-facility request tool is coming. If you have a utility document for this site, send it to us.
EPA permits & violations
source: EPA ECHONo reported violations as of last sync.
Nearest school
source: HIFLD / NCESThe nearest public school, Fink El Sch in Middletown, is 0.4 mi from this site (226 students).
Schools are sensitive receptors for the noise, backup-generator exhaust, and traffic a large data center brings. Straight-line distance to the nearest public school (HIFLD/NCES, US public schools only).
Hearings timeline
No public-hearing records linked to this site yet. We surface planning-commission and board-of-supervisors dates when a record names a facility. If you know of a hearing on this site, tell us.