Equinix DC-21 and DC-22 (Ashburn East)
approved CampusOperated by Equinix, LLC
Virginia DEQ issued Equinix, LLC an air permit document (Registration No. 74189) on October 17, 2025 for diesel engine gen-sets at the DC-21 and DC-22 data centers on Beaumeade Circle in Ashburn, superseding the permit document dated December 18, 2024. The permit authorizes construction of three additional Cummins QSK95-G15 emergency diesel gen-sets rated 3,350 kWe each, alongside previously permitted emergency and non-emergency units dating to 2021 and 2023.
Land use jurisdiction: Loudoun County
Measurements on record
No disclosed measurements on record yet.
Approvals, by aspect
| Aspect | Approving body | Instrument | Status |
|---|---|---|---|
| Air permit (backup generators) | Virginia Department of Environmental Quality | Article 6 minor NSR permit (superseding), Registration No. 74189 (2025-10-17) document |
on record |
| Land use entitlement (CUP / rezoning) | not yet requested | ||
| CEQA review | not yet requested | ||
| Building permit | not yet requested | ||
| Water supply (will-serve) | not yet requested | ||
| Wastewater / septic | not yet requested | ||
| Stormwater / retention ponds / dry wells | not yet requested | ||
| Grid interconnection | not yet requested | ||
| Natural gas supply | not yet requested | ||
| Tax abatement / development agreement | not yet requested |
Location and sources
Ashburn, Loudoun County, Virginia
Every record links to its source: openly licensed datasets (Epoch AI, CC BY; Wikidata, CC0; US EPA, public domain) and public permit records. Full sourcing and licensing: methodology · sources.