PAX, Pennsylvania Digital I

Timeline from the record

Newest first. Record entries come from the filings and reports the registry cites. Coverage entries are headlines from publisher feeds we monitor daily, linked to the outlet; last checked September 14, 2026.

1. July 2025

   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 Source: GlobeNewswire

Opposition and litigation at this site

Yes. PAX, Pennsylvania Digital I in Carlisle, Cumberland County, Pennsylvania is contested. Hearings, public comment, petitions, or organized opposition are on record, and no lawsuit has been filed so far. 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.

How the community has taken it

Reception is a sourced signal, not an editorial judgment: contested means active public debate is on record, with hearings, petitions, or organized opposition, without litigation.

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.

Source: Protect Cumberland County PA

Power and water

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.

Notes on the record

'Pennsylvania Digital I' (PAX) in Carlisle, Cumberland County: a ~700-acre, three-campus development delivering 1.35 GW (expandable to 1.8 GW, in notes), each campus with six buildings and a 450 MW substation. The $15B is the project value across all three campuses (in notes). Near-term 300 MW by Q2 2027. Coordinates are the Carlisle area centroid. The $15B figure is the three-campus JV total, not broken out per campus -> investmentUsd omitted. Pennsylvania's data-center sales-tax exemption eligibility is likely but no confirmed award or LERTA designation was found. Partner: Pennsylvania Data Center Partners.

Other sites within 30 miles

Distances are between recorded coordinates, many of which are a city or county centroid, so treat them as approximate. Cumulative load on one utility and one aquifer is the question a planning commission rarely asks.

• Fairview Crossroads Data Center · Fairview Township · Elysian Partners18 mi · Proposed

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