Backer profile · Developer

Carlisle Development Partners, LLC

Carlisle Development Partners, LLC is the developer of the Pennsylvania Digital I (PAX) campus in Middlesex Township, Cumberland County, near Carlisle, and it's the intervening developer in the residents' land use appeals there. It's the joint venture of Pennsylvania Data Center Partners and PowerHouse Data Centers, which announced PAX in July 2025 as a $15 billion project of 1.35 gigawatts that could grow to 1.8 gigawatts. Township supervisors gave final approval to the first six data center buildings in September 2026, and site work and a PPL substation are under construction.

PowerHouse, which is wholly owned by American Real Estate Partners, said in July 2025 that it had 86 data centers underway or in planning, totaling more than 24 million square feet and 6 gigawatts in seven markets.

Scoreboard

Pennsylvania project on our map

1 approved or built

Developer: 1

Approved or built1

In process0

Stopped0

Megawatts named1,800 MWpublished for 1 of 1

Building area named4.0 million sq ftpublished for 1 of 1

Land involved700 acrespublished for 1 of 1

Investment announced$15.0 billionpublished for 1 of 1

Permanent jobs claimed450claimed for 1 of 1

Water, maximum0.4 million gal/daypublished for 1 of 1

Counties1Cumberland

Earliest project2025first public announcement

Local groups opposing2across its projects

Legal filings3appeals, challenges and suits on file

Community impacts9documented on its projects

News stories18in our coverage log

Projects

Project	Status	Role	Size named
Pennsylvania Digital I (PAX)Middlesex Township (near Carlisle), Cumberland CountySuggest a correction	Under Construction	Developer	1,800 MW 4.0 million sq ft

Sources

Pennsylvania Data Center Partners and PowerHouse Data Centers Launch Joint Venture to Build Next-Gen 1.35 GW Hyperscale Data Center Campus in Carlisle, Pennsylvania GlobeNewswire (via FinancialContent) · 2025-07-15
Order on Motion to Quash Land Use Appeal and Motion to Stay, No. 2026-06465 Civil Term Cumberland County Court of Common Pleas (copy posted by Stop PAX-1) · 2026-09-22
Pennsylvania Digital I (PAX) No Conshy Data Centers · 2026-10-22

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