Digital Realty ACC4

Operating · Grizzly Ventures LLC · 44480 Hastings Drive, Ashburn, VA

Digital Realty ACC4 is an operating facility at 44480 Hastings Drive in the Ashburn Corporate Center campus. Public operator material identifies the site as ACC4; historical sources also use the DuPont Fabros ACC4 name. The facility is described as LEED Gold-certified with high-density white space and diverse network entries. The profile keeps that facility identity separate from campus-wide capacity and grid claims, and maps the exact location to the PJM-serving utility territory.

Website Open in grid

Overview

Status: Operating
Operating facility
Exact-site power: 36 MW
Leasable IT Load · Operating
Facility size: 347,500 sq ft
1 reported building · Facility
Opened: 2007
ACC4
Compute profile

Digital Realty ACC4

Operating · Grizzly Ventures LLC · 44480 Hastings Drive, Ashburn, VA

Digital Realty ACC4 is an operating facility at 44480 Hastings Drive in the Ashburn Corporate Center campus. Public operator material identifies the site as ACC4; historical sources also use the DuPont Fabros ACC4 name. The facility is described as LEED Gold-certified with high-density white space and diverse network entries. The profile keeps that facility identity separate from campus-wide capacity and grid claims, and maps the exact location to the PJM-serving utility territory.

Website Open in grid

Overview

Status: Operating
Operating facility
Exact-site power: 36 MW
Leasable IT Load · Operating
Facility size: 347,500 sq ft
1 reported building · Facility
Opened: 2007
ACC4
Compute profile

Colocation

Cooling design

water

Water-cooled chillers · CRAH/CRAC · Cooling tower

Profile

Project scope: Single-building, operating Digital Realty facility (ACC4) at 44480 Hastings Drive; LEED Gold–certified, listed as one 1‑story data center building on a ~17‑acre Ashburn Corporate Center campus. Operator: Digital Realty; owner recorded as Grizzly Ventures LLC.
Power and grid: 36 MW of leasable it load is reported for the exact facility.
Compute role: ACC4 is a colocation data center operated by Digital Realty, providing high‑density white‑space capability and multiple diverse fiber/network entries.
Cooling and environment: Water-cooled chillers. CRAH/CRAC.
Local reporting: The ACC4 facility is identified as a high‑density data center with 207 W/ft², eco‑friendly reclaimed water cooling, and is listed in a community‑response tracker that compiles local news, public reporting, and government records.

Organizations

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

OrganizationRoleScope

Grizzly Ventures LLCOwnerExact Asset

Digital RealtyOperatorExact Asset

DuPont Fabros (original developer; later merged with Digital Realty)DeveloperExact Asset

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

2007
2007
ACC4 entered operation
ACC4 single-building phase (one 1‑story building) with ~347,500 ft² gross building area; LEED Gold certified; multiple diverse fiber entrances; marketed data halls commonly cited as ~10,000 ft² each.