# Sabey Data Centers Ashburn - Building A

PJM data center · https://askthegrid.com/assets/facilities/sabey-data-centers-ashburn-building-a

Sabey Data Centers Ashburn Building A is an under-construction building at 21735 Red Rum Drive in Ashburn. Sabey describes it as the third and final facility in its Ashburn campus expansion, with 54 MW of reported capacity and a planned 2026 completion. Those project details remain explicitly building-scoped and forward-looking; they are not represented as operating load or guaranteed utility service. The exact building is mapped to the PJM-serving utility territory.

## Identity and location

- Operating status: under_construction
- Asset scope: building
- Location: 21735 Red Rum Drive, Ashburn, VA
- Owner: Sabey Data Center Properties, LLC (exact asset) — http://natadvisors.com/portfolio/sabey-data-center-properties
- Operator: Sabey Data Centers (exact asset) — http://sabeydatacenters.com/locations/ashburn-data-center
- Developer: Sabey Data Center Properties, LLC (exact asset) — http://natadvisors.com/portfolio/sabey-data-center-properties
- Utility: Dominion Energy (exact asset) — https://www.dominionenergy.com/en/About/Delivering-Energy/Electric-Transmission-Access

## Power and grid context

- Leasable it load: 54 MW · under_construction · building · Building A · as of 2026 — Building A - 54 MW
- Leasable it load: 23 MW · unknown · building · Building B — Building B - 23 MW
- Leasable it load: 7.4 MW · unknown · building · Building C — Building C - 7.4 MW
- Campus gross power: 85 MW · target · campus — Total campus capacity
- ISO/RTO: PJM
- Balancing authority: PJM Interconnection
- Electric utility: Dominion Energy Virginia

## Development

- Site status: under_construction
- Site area: 38 acres
- Buildings: 3
- Construction: Building A, the third and final three‑story data center on Sabey’s Ashburn campus, was announced on 2025-06-25, began construction on the same date, provides 54 MW of power, and is scheduled for completion and online availability in 2026; it is currently under construction.

## Compute and operations

- Facility classes: colocation
- Operating context: Building A, the third and final three‑story data center on Sabey’s Ashburn campus, is under construction with a planned capacity of 54 MW, offering air‑cooled, liquid‑cooled, and hybrid cooling options, and supporting high‑density deployments exceeding 100 kW per rack, with a Ready for Service date in 2026.

## Sources

- [http://datacenter.fyi/public-record/amazon-data-services-inc-iad-144-iad-145-393425b0](http://datacenter.fyi/public-record/amazon-data-services-inc-iad-144-iad-145-393425b0)
- [http://datacenterfrontier.com/colocation/article/33038547/dcf-tours-sabey-data-centers-sdc-ashburn-data-center-alley-virginia](http://datacenterfrontier.com/colocation/article/33038547/dcf-tours-sabey-data-centers-sdc-ashburn-data-center-alley-virginia)
- [http://dominionenergy.com/en/Virginia/Large-Business-Services/Data-Center-Requests](http://dominionenergy.com/en/Virginia/Large-Business-Services/Data-Center-Requests)
- [http://emergencyprocedures.pjm.com/ep/pages/regions.jsf](http://emergencyprocedures.pjm.com/ep/pages/regions.jsf)
- [http://info.sabeydatacenters.com/hubfs/SDC%20Downloadables/SDC%20Cutsheets/SDC%20Ashburn%2009242024.pdf](http://info.sabeydatacenters.com/hubfs/SDC%20Downloadables/SDC%20Cutsheets/SDC%20Ashburn%2009242024.pdf)
- [http://natadvisors.com/news-insights/sabey-data-center-properties-welcomes-strategic-investment-from-ares-strengthening-platform-for-continued-growth](http://natadvisors.com/news-insights/sabey-data-center-properties-welcomes-strategic-investment-from-ares-strengthening-platform-for-continued-growth)
- [http://sabeydatacenters.com/locations/ashburn-data-center](http://sabeydatacenters.com/locations/ashburn-data-center)
- [Construction Moving Along for Final Phase of… | Sabey Data Centers](http://sabeydatacenters.com/news/sabey-breaks-ground-on-final-phase-of-ashburn-campus-expansion)
- [Data centers in Loudoun County, VA: 51 tracked sites | Is a Data Center Coming](https://isadatacentercoming.com/va/loudoun-county) — Is a Data Center Coming · 2026-02-09
- [Phase 2: Data Center Standards & Locations  | Loudoun County, VA - Official Website](https://loudoun.gov/6222/Phase-2-Data-Center-Standards-Locations)
- [Sabey Data Centers Breaks Ground on Final Phase of ...](https://natadvisors.com/news-insights/sabey-data-centers-breaks-ground-on-final-phase-of-ashburn-campus-expansion/)
- [SDC Ashburn | Sabey Data Centers](https://sabeydatacenters.com/locations/ashburn-data-center)
- [Intergate Ashburn, LLC — Loudoun County, VA | Groundwork](https://www.canonical.cc/labs/groundwork/site/intergate-ashburn-llc-loudoun/)
- [21735 Red Rum Dr, Ashburn, VA 20147](https://www.compass.com/homedetails/21735-Red-Rum-Dr-Ashburn-VA-20147/1TY79Q_pid/)
- [Ashburn Data Centers - 140 Facilities from 3 Operators](https://www.datacentermap.com/usa/virginia/ashburn/)
- [SDC Ashburn - Building A | Sabey Data Center Properties LLC](https://www.datacentermap.com/usa/virginia/ashburn/intergate-ashburn/)
- [A Repeat Performance: Sabey Intergate.Ashburn Data ...](https://www.indexc.com/news/story/a-repeat-performance-sabey-intergate-ashburn-data-center)
- [Data Centers in Loudoun County](https://www.loudoun.gov/6188/Data-Centers-in-Loudoun-County)
- [21735 Red Rum Dr, Ashburn, VA 20147](https://www.redfin.com/VA/Ashburn/21735-Red-Rum-Dr-20147/home/40517853)
- [Data Center Retail Sales & Use Tax Exemption | Virginia Economic Development Partnership](https://www.vedp.org/incentive/data-center-retail-sales-use-tax-exemption)

## Data quality

- No community benefit information found in the sources reviewed.
- Power values retain their reported, requested, contracted, energized, gross-campus, or critical-IT basis.

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Canonical page: https://askthegrid.com/assets/facilities/sabey-data-centers-ashburn-building-a
Profile generated: 2026-09-04T13:53:33.256184Z
Source: Ask the Grid — https://askthegrid.com/