THREE MILE ISLAND
Substation-AdjacentYork County, Pennsylvania · PJM
THREE MILE ISLAND is a substation-adjacent datacenter candidate site in York County, Pennsylvania, interconnecting through PJM. It screens at 63.5/100 DC Readiness with a catalogued 1,000 MW of candidate capacity and a 3.8 yrs average interconnection-queue wait.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Keystone Opportunity Zone/KOEZ sales and property tax exemptions in designated areas.
Site location
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Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in York County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| BRUNNER ISLAND | Substation-Adjacent | 230 kV | 300 MW | 3.8 yrs | 60.2 |
| EC York Coal Area | Greenfield | — | — | 3.0 yrs | 60.2 |
| EC York Coal Area | Greenfield | — | — | 3.0 yrs | 59.9 |
| OZ York | Greenfield | — | — | 3.0 yrs | 59.8 |
| EC Near York Energy Center | Greenfield | — | — | 3.0 yrs | 59.5 |
| EC Near Brunner Island | Greenfield | — | — | 3.0 yrs | 59.5 |
| EC York Coal Area | Greenfield | — | — | 3.0 yrs | 59.4 |
| EC Near Brunner Island | Greenfield | — | — | 3.0 yrs | 59.3 |
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for THREE MILE ISLAND, York County. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.