Data Center Atlas
Pennsylvania Digital I (PAX-1), Middlesex Township
Announced
United States · 1 project · Last reported
Summary
Hyperscale AI data center development on about 700 acres off Country Club Road in Middlesex Township, Cumberland County, roughly five miles northeast of Carlisle, Pennsylvania. Pennsylvania Data Center Partners and PowerHouse Data Centers announced the USD 15 billion joint venture in July 2025: three campuses of six buildings, each with its own 450 MW substation, for 1.35 GW of utility capacity expandable to 1.8 GW, connected by PPL Electric Utilities. Township supervisors approved subdivision plans in January 2026 and a 450 MW substation in March 2026, before vertical construction began. The developers target 300 MW of power by the second quarter of 2027.
Source record as of 2026-03-05 · Details and sources
Location
The interactive map needs JavaScript. Display anchor: 40.21670, -77.11640 (Point locator, WGS 84).
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Town or locality reference only; the facility position is not established.
Projects (1)
Pennsylvania Digital I (PAX-1), Middlesex Township
Announced last observed as of · Reported status
Location: Middlesex Township, Cumberland County, Pennsylvania, US. Coordinates are the Wikipedia point for Middlesex Township (s4). Local reporting places the site off Country Club Road about five miles northeast of Carlisle; the parcel was not geocoded. PowerHouse Data Centers; WHP580 Newsroom (iHeartMedia); Wikipedia
Use: Ai unspecified
Capacity, investment and other figures
| Measure | Value | Scope | As of | Notes | Sources |
|---|---|---|---|---|---|
| Power capacity | 1,350 MW | Planned · Campus · Grid connection | 2025-07-15 | Labelled utility capacity: three campuses, each with a dedicated 450 MW substation. | PowerHouse Data Centers; Construction Review Online |
| Power capacity | up to 1,800 MW | Planned · Campus · Grid connection | 2025-07-15 | Stated expansion potential. | PowerHouse Data Centers; Construction Review Online |
| Power capacity | 450 MW | Permitted · Phase · Grid connection · Substation approved March 2026 | 2026-03-04 | Approved unanimously by township supervisors; the master plan gives each of the three campuses its own 450 MW substation. | Construction Review Online |
| Power capacity | 300 MW | Planned · Phase · Grid connection · Near-term power delivery | 2025-07-15 | Targeted by the second quarter of 2027. | PowerHouse Data Centers; Construction Review Online |
| Investment | 15,000,000,000 USD | Announced · Campus | 2025-07-15 | Trade press reports a split of about USD 9.8 billion for IT equipment, USD 3 billion for construction, USD 1.5 billion for power infrastructure and USD 750 million for cooling, security and land. | PowerHouse Data Centers; WHP580 Newsroom (iHeartMedia); Construction Review Online |
| Land area | about 700 acres | Reported · Campus | 2026-01-09 | PowerHouse Data Centers; WHP580 Newsroom (iHeartMedia); Construction Review Online | |
| Buildings | 18 count | Planned · Campus | 2026-01-09 | Three campuses of six buildings each. | WHP580 Newsroom (iHeartMedia); Construction Review Online |
| Jobs construction | up to 30,000 count | Reported · Campus | 2026-03-05 | Peak construction jobs as reported by trade press; no company source for this figure was opened. | Construction Review Online |
| Jobs permanent | 270 count | Reported · Campus | 2026-03-05 | Construction Review Online |
Companies and organizations
| Name | Role | Notes | Sources |
|---|---|---|---|
| PowerHouse Data Centers | Developer | A division of American Real Estate Partners (AREP). | PowerHouse Data Centers; Construction Review Online |
| Pennsylvania Data Center Partners | Developer | PowerHouse Data Centers; Construction Review Online | |
| Carlisle Development Partners LLC | Developer | Entity named as developer in the township subdivision approval and as signatory of the water and sewer agreement. | WHP580 Newsroom (iHeartMedia); Construction Review Online |
| PPL Electric Utilities | Utility | PowerHouse Data Centers; Construction Review Online | |
| Middlesex Township Board of Supervisors | Government | WHP580 Newsroom (iHeartMedia); Construction Review Online |
Timeline
| Date | Event | Actual or planned | Notes | Sources |
|---|---|---|---|---|
| 2025-07-15 | Announced | Actual | Announced at the Pennsylvania Energy and Innovation Summit in Pittsburgh. | PowerHouse Data Centers |
| 2026-01 | Other | Actual | Township supervisors approved subdivision plans, as reported on 9 January 2026 (the vote date is not stated); land development plans and decisions on power and water were still needed before construction. | WHP580 Newsroom (iHeartMedia) |
| 2026-01-15 | Other | Actual | USD 14.1 million agreement with the township for rights to public water and sewer service. | Construction Review Online |
| 2026-03-04 | Permit approved | Actual | Supervisors unanimously approved the first 450 MW substation; vertical construction had not yet begun. | Construction Review Online |
| 2027-Q2 | First operational | Planned | Target for the first 300 MW of power delivery. | PowerHouse Data Centers; Construction Review Online |
Power supply
| Type | Description | Sources |
|---|---|---|
| Grid | PPL Electric Utilities will connect the campuses to its transmission system through dedicated 450 MW substations. | PowerHouse Data Centers; Construction Review Online |
Construction Review (published 5 March 2026, updated 15 June 2026) also reports that supervisors rejected adding more than 214 acres along Harrisburg Pike and signalled a pause on further data center zoning changes until the comprehensive plan is updated. No report of a construction start after March 2026 was found. WHP580 reported in January 2026 that the Middlesex water authority had committed to reserve up to 400,000 gallons a day.
Sources for these details
- 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 — PowerHouse Data Centers; 2025-07-15 · Archived source
- Plans Approved for 18-Building Data Center in Pennsylvania — WHP580 Newsroom (iHeartMedia); 2026-01-09 · Archived source
- $15 Billion AI Data Center Project in Pennsylvania Clears Key Milestone — Construction Review Online; 2026-03-05 · Archived source
- Middlesex Township, Cumberland County, Pennsylvania — Wikipedia; publication date not stated
- Companies
- Developer: PowerHouse Data Centers (unknown scope) evidence
- Developer: PowerHouse Data Centers (unknown scope) evidence
- Developer: Pennsylvania Data Center Partners (unknown scope) evidence
- Developer: Pennsylvania Data Center Partners (unknown scope) evidence
- Developer: Carlisle Development Partners LLC (unknown scope) evidence
- Developer: Carlisle Development Partners LLC (unknown scope) evidence
- Utility: PPL Electric Utilities (unknown scope) evidence
- Utility: PPL Electric Utilities (unknown scope) evidence
- Government: Middlesex Township Board of Supervisors (unknown scope) evidence
- Government: Middlesex Township Board of Supervisors (unknown scope) evidence
Source and location review
- Status source
- $15 Billion AI Data Center Project in Pennsylvania Clears Key Milestone evidence row
Construction Review Online · published 2026-03-05 · Trade publication - Locator
- Locality reference only · Compiled location reference · locality evidence
- Source checks
Not reviewed against imagery not_
reviewed
No imagery review is recorded for this project. Its status rests only on the dated authoritative source. · no independent imagery verificationStatus age at review: 236 days before the data update on 2026-10-27
Location details
- Coordinates
- 40.21670, -77.11640
- Geometry licence
- source-terms-not-recorded
- Use scope
- Locality reference only
- Scope class
- locality
- Authority
- Compiled location reference
- Source entity
- Project
- Method
- imported_reference_point
- Derivation
- imported_reference_point
- Precision scope
- Coordinates are the Wikipedia point for Middlesex Township (s4). Local reporting places the site off Country Club Road about five miles northeast of Carlisle; the parcel was not geocoded.
- Horizontal uncertainty
Not reported
The source record provides no measured horizontal uncertainty; original coordinate precision and note are preserved.
- Geometry evidence
- 0018bbb4
A locator places the site on the map. It is not a building footprint, a construction extent or a surveyed boundary unless the use scope is an official boundary, and even then it is a parcel or permit boundary.
Evidence
Sources are linked, not redistributed; each keeps its own terms. An archived copy is a lookup for the Wayback Machine capture nearest the retrieval date and may be unavailable or differ from what was reviewed. Each hash states what it covers; imported factual records are not publisher-page captures.
| Title | Publisher | Roles | Published | Retrieved | Licence | Attribution | Content hash (SHA-256) |
|---|---|---|---|---|---|---|---|
| $15 Billion AI Data Center Project in Pennsylvania Clears Key Milestone Archived copy | Construction Review Online Trade publication | Imported: Record, Imported: Status, Metric: Buildings, Metric: Investment, Metric: Jobs Construction, Metric: Jobs Permanent, Metric: Land Area, Metric: Power Capacity, Milestone: First Operational, Milestone: Other, Milestone: Permit Approved, Power Source: Grid, Role: Developer, Role: Government, Role: Utility | source-terms-not-recorded | Construction Review Online | 0ef6da5ff9b0e3e1c61d3c4765d417c31b4d55fcea2eff87d9b684eccaa063a0Factual source record; not the publisher page | ||
| Middlesex Township, Cumberland County, Pennsylvania Archived copy | Wikipedia Other | Imported: Geometry, Imported: Record | not stated | source-terms-not-recorded | Wikipedia | 1b7ba250598a26b9123a7eea36009b00d1b3f1e9ea4601f712db1dd14bd22bf1Factual source record; not the publisher page | |
| 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 Archived copy | PowerHouse Data Centers Company disclosure | Imported: Geometry, Imported: Record, Metric: Investment, Metric: Land Area, Metric: Power Capacity, Milestone: Announced, Milestone: First Operational, Power Source: Grid, Role: Developer, Role: Utility | source-terms-not-recorded | PowerHouse Data Centers | 4cce16b5f9b795c626ef774ea74f6a004c8ff277db09faf71484031577a29f73Factual source record; not the publisher page | ||
| Plans Approved for 18-Building Data Center in Pennsylvania Archived copy | WHP580 Newsroom (iHeartMedia) News | Imported: Geometry, Imported: Record, Metric: Buildings, Metric: Investment, Metric: Land Area, Milestone: Other, Role: Developer, Role: Government | source-terms-not-recorded | WHP580 Newsroom (iHeartMedia) | 49e2661d5a861a6e3f193814abaa1c1560a332dd24507723ef5ac391134ace8fFactual source record; not the publisher page |
Cite this site
Kyars, K. (2026). Pennsylvania Digital I (PAX-1), Middlesex Township [site vcc-site-07b3e2197c23d98b282e]. In Data Center Atlas (2026-10-27) [Data set]. https://kiankyars.github.io/datacenter-atlas/sites/vcc-site-07b3e2197c23d98b282e/
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