Pennsylvania has become one of the busiest states for AI data center sites because of its retired and retiring power plants, its gas supply and its place in PJM. The best Pennsylvania sites reuse a plant’s switchyard and land, add on-site gas, or both. Invariant lists a 350 MW Pennsylvania campus with a signed utility service agreement, a 500 MW gas-plus-grid site and an energized 5 MW site.
Before you start
- Pennsylvania is in PJM, where long-term load forecasts are rising sharply on data center demand.
- Retired coal and gas plants offer switchyards, transmission rights and large acreage. The Homer City plant redevelopment is the best-known example.
- Gas from the Marcellus makes behind-the-meter power a real option.
- Signed utility agreements are scarce. Ours is 350 MW with a phased ramp starting in 2026.
Data center sites available in Pennsylvania
These Pennsylvania sites are in Invariant’s current inventory. Specs are as marketed by the owner and are checked against utility documents before any introduction.
| Region | Power | Land | Timing |
|---|---|---|---|
| Pennsylvania | 350 MW, signed utility service agreement | Former plant campus, lease | 50 MW end 2026, 300 MW end 2027 |
| Pennsylvania | 200 MW BTM gas + 300 MW grid | 120 ready acres | Phased |
| Pennsylvania | 5 MW turnkey | Land available | Now |
Exact locations, the utility documents behind each MW figure and pricing are shared on a call. We also hold sites that are not listed publicly; owners ask for discretion and a site that is shopped everywhere loses value.
PJM and plant reuse
PJM’s 20-year forecast shows load growing steeply, much of it data centers. That has made studies longer and capacity more valuable. FERC approved a streamlined PJM process for replacing retiring generation at the same interconnection point, which helps plant sites add new generation. The data center load still needs its own utility study.PJM Inside LinesPJM Inside Lines
Homer City, a former coal plant, is being redeveloped as a gas-powered AI campus. It is the template many Pennsylvania plant sites now follow.Data Center Knowledge
What to check in Pennsylvania
For plant sites: coal ash units, groundwater monitoring, deed restrictions and who holds the environmental liability. For gas sites: firm pipeline capacity and the air permit path. For grid sites: the load study date and whether the ramp fits your hardware schedule.U.S. Energy Information Administration
How to screen a Pennsylvania data center site
- Confirm the serving utility and the grid operator, then ask which document backs the MW: a will-serve letter, a load study or a signed agreement.
- Check that the substation has headroom for your load under contingency. Distance to a line is not capacity.
- Screen the county and any city that could annex the site for moratoriums, recent denials and the zoning path.
- Work out usable acres after wetlands, floodplain, slope, easements and setbacks, and reserve room for the substation.
- Kill sites that are already claimed, operating for someone else, contaminated or owned by an environmental liability buyer before spending on parcels.
Invariant runs this screen on every Pennsylvania site before an introduction and grades the result A, B or C by power evidence. Tell us your MW and date and we will send the Pennsylvania sites that fit, including off-market ones.
Browse data center sites by size and state
Questions that come up.
Why are data centers going to Pennsylvania?
Retired power plants with switchyards and land, Marcellus gas for on-site power, and access to the PJM grid. Several large AI campuses are planned on former plant sites.
Is there a Pennsylvania data center site with signed power?
Yes. Invariant lists a 350 MW campus with a signed utility service agreement, 50 MW at end of 2026 and 300 MW at end of 2027, available for lease. Details are shared on a call.
How do I find a data center site in Pennsylvania?
Start from power evidence, not land: confirm the serving utility, the document behind the MW and substation headroom, then screen local approval and usable acres. Invariant does this for buyers and currently lists Pennsylvania sites at 350 MW, signed utility service agreement, 200 MW BTM gas + 300 MW grid, 5 MW turnkey. Book a call or call (628) 220-8972.
Sources and references.
Site specifications are as marketed by the seller and are checked against utility documents before any introduction. Public sources checked on . The location, equipment, and operating plan determine which requirements apply to a project.
- PJM Inside LinesPJM's updated 20-year forecast continues to see significant long-term load growth ↗
- Data Center KnowledgeMajor AI data center planned for former Pennsylvania coal power plant ↗
- PJM Inside LinesFERC approves streamlined process to replace retiring facilities ↗
- U.S. Energy Information AdministrationPreliminary monthly electric generator inventory (EIA-860M) ↗
- PacesGrid planning for data centers and transmission investment ↗
- U.S. Energy Information AdministrationPennsylvania state energy profile ↗