Carlisle, PA · Cumberland County · 40.202°N 77.189°W
PAX — Pennsylvania Digital I
PowerHouse Data Centers / Pennsylvania Data Center Partners
Key facts
- Location
- Carlisle, PA, Cumberland County
- Capacity
- 1,350 MW planned
- Powered by
- —
- Announced
- 2025-07
- Last updated
Civic impact
Economics
Energy & water
- Energy source
- Grid · Utility: PPL Electric Utilities
- Cooling
- Evaporative
PPL Electric Utilities will connect the campuses via a new 500 kV-138 kV switching station; 1.35 GW delivered via the PJM grid. No on-site generation confirmed.
Evaporative cooling for peak thermal conditions. A $14.1M agreement with the Middlesex Township Municipal Authority grants access to up to 400,000 gal/day (0.4 MGD) - a contracted ceiling (~2,367 dwelling units), not measured operational use; regulated by PA DEP and the Susquehanna River Basin Commission.
Community sentiment
Middlesex Township supervisors voted 3-0 (Ordinance 3-2025, May 30 2025) to create a 694-acre Data Center Overlay District making data centers a by-right use; Protect Cumberland County PA documents organized opposition over water, pollution, utility rates, and private-well impacts (Rep. Barb Gleim questioned utility-bill effects). No litigation as of 2026-07-08.
Middlesex Township data center overlayStatus history
- Under construction
PA Data Center Partners and PowerHouse launched a $15B JV for a 1.35 GW hyperscale campus (Pennsylvania Digital I / PAX) in Carlisle; near-term 300 MW by Q2 2027
Pennsylvania Data Center Partners and PowerHouse Data Centers launch JV to build 1.35 GW hyperscale campus in Carlisle
Location
Sources & data provenance
Confirmed: data verified against official filings, permits, or direct operator announcements.
Last updated:
- GlobeNewswireRetrieved:
- PowerHouse Data CentersRetrieved:
- Common DreamsRetrieved:
- Government TechnologyRetrieved:
- Protect Cumberland County PARetrieved:
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