Sabey Data Centers Ashburn Building B

Operating · Sabey Data Center Properties LLC · 21745 Red Rum Drive, Ashburn, VA

Sabey Data Centers Ashburn Building B is a building data center in Ashburn, Loudoun County, VA. Sabey Data Centers is identified as the operator, and the facility is operating. It is identified as part of Sabey Ashburn Campus. Spatial service-territory evidence associates the site with Dominion Virginia Power (Dominion); the profile assigns the asset to PJM through that documented market role. Reported development, power, and commercial facts retain their source-specific facility, campus, building, or phase scope; the page does not collapse those values into a single implied load.

Website Open in grid

Overview

Status: Operating
Operating building
Exact-site power: 2.25 MW
Backup Generation · Reported
Facility size: 160,000 sq ft
Building
Campus power: 85 MW
Sabey Ashburn Campus · Campus Gross Power
Opened

Sabey Data Centers Ashburn Building B

Operating · Sabey Data Center Properties LLC · 21745 Red Rum Drive, Ashburn, VA

Sabey Data Centers Ashburn Building B is a building data center in Ashburn, Loudoun County, VA. Sabey Data Centers is identified as the operator, and the facility is operating. It is identified as part of Sabey Ashburn Campus. Spatial service-territory evidence associates the site with Dominion Virginia Power (Dominion); the profile assigns the asset to PJM through that documented market role. Reported development, power, and commercial facts retain their source-specific facility, campus, building, or phase scope; the page does not collapse those values into a single implied load.

Website Open in grid

Overview

Status: Operating
Operating building
Exact-site power: 2.25 MW
Backup Generation · Reported
Facility size: 160,000 sq ft
Building
Campus power: 85 MW
Sabey Ashburn Campus · Campus Gross Power
Opened

2018-2019

Building B

Compute profile

Colocation

colocation

Profile

Project scope: Building B was completed and became fully operational around 2018‑2019, providing 22 MW of mission‑critical power and 160,000 sq ft of data‑hall space, with on‑site generators of 2.25 MW capacity and 48‑hour run‑time.
Power and grid: 2.25 MW of backup generation is reported for the exact facility. 85 MW applies to the wider Sabey Ashburn Campus, not this building alone.
Compute role: A carrier‑neutral colocation data center offering 22 MW of power, 160 k sq ft of floor space, robust power, cooling, security, and connectivity.
Cooling and environment: Evaporative and economizer cooling. Liquid cooling enabled. Low water stress (<10%).
Local reporting: Sabey Data Centers' SDC Intergate Ashburn Building B is located at 21745 Red Rum Drive, offering 22 MW of power and 160,000 sq ft of space.

Organizations

Material, source-backed organizations directly involved with this facility or its parent campus. Duplicate legal names and incidental community mentions are excluded.

OrganizationRoleScope

Sabey Data Center Properties LLCOwnerExact Asset

Sabey Data CentersOperatorExact Asset

Dominion EnergyUtilityExact Asset

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Mar 12, 2024
Mar 12, 2024
DCF Tours: Sabey Data Centers' SDC Ashburn, Data Center Alley, VirginiaData Center...
A tour of Sabey's SDC Ashburn shows Building B sold out, with 22 MW of power and a 38‑acre campus in Data Center Alley.
Jun 25, 2025
Jun 25, 2025
Construction Moving Along for Final Phase of Ashburn Campus ExpansionSabey Data ...
Sabey announced construction of the final phase of its Ashburn campus, delivering additional capacity and describing the campus size and power.

Sources

PublisherReferenceType

loudoun.govSourceGovernment filing