STACK Loudoun County Arcola Data Center Campus

Ashburn, Virginia, United StatesPreconstruction

Planned critical IT: 144 MW
Updated: Oct 28, 2026

STACK Loudoun County Arcola Data Center Campus, also known as STACK Loudoun County 144MW Campus, is a data center project in Ashburn, VA, US developed and operated by STACK Infrastructure. Greater Ashburn campus planned as two 72 MW, two-story data center buildings totaling 144 MW. Closed-loop water cooling and flexible deployment models designed for AI, machine-learning and cloud workloads. STACK now markets the same Arcola/Loudoun campus at 200 MW across two two-story facilities, superseding the 144 MW announcement. It remains future capacity, not operating IT.

Capacity

Reported capacity

Design

144 MW

Source

Reported capacity

Planned / design or future potential

200 MW

Source

Operating IT capacity: Not established in published records

A missing figure does not mean zero. Planned, utility and generation figures are not operating IT capacity.

Development

Development, permitting and phased deliveryAnnounced or preconstruction

STACK now markets the same Arcola/Loudoun campus at 200 MW across two two-story facilities, superseding the 144 MW announcement. It remains future capacity, not operating IT.

Milestones (2)

STACK announced 144 MW Loudoun campus

Feb 11, 2025 · Recorded actual event

Completed · Announced

Source not linked

Current project page reports 200 MW Arcola plan

Aug 29, 2026 · Recorded actual event

Completed · Status changed

Source not linked

Participants

STACK Infrastructure

Developer

Sources by role

Developer (1)

STACK expands Loudoun County footprint with 144MW hyperscale campus · Feb 11, 2025 · Primary

Site & development

Location context

Actual

STACK Loudoun County 144MW Campus | Ashburn | VA | US

Source

Location context

Actual

STACK Loudoun County 144MW Campus | Ashburn | VA | US

Source

Site area

Design

122 acres

Source

Building count

Design

2 facilities

Source

Building form

Design

Two story

Source

Additional project facts

Lifecycle status

Actual

Preconstruction

Source

Capacity basis

Actual

STACK Infrastructure publishes 144 MW of critical IT capacity for this record boundary.

Source

Lifecycle status

Actual

Preconstruction

Source

Capacity basis

Actual

STACK now markets the same Arcola/Loudoun campus at 200 MW across two two story facilities, superseding the 144 MW announcement. It remains future capacity, not operating IT.

Source