Firefox
South Riding, Loudoun County, Virginia
Parcel boundary
A permit or approval is on record. Construction may not have started.
- Status
- Permitted
- Owner
- Owner not independently traced
- Capacity
- not stated
- Location known to
- Parcel boundary
- County
- Loudoun County
- State
- Virginia
- Electric utility
- Not identified
- Grid operator
- PJM
Location and nearby
Firefox is on record as permitted in Loudoun County, Virginia. 402 other campuses are on record within 25 miles, 68 of them within 5 miles. The nearest is 0.54 mi away.
Nearest of each kind: Operating 0.54 mi Under construction 4.1 mi Permitted 0.72 mi Proposed 1.2 mi
Nearest campuses on record
- 0.54 mi
Operating · Loudoun County, VA
- 0.72 mi
Permitted · Fairfax County, VA
- 0.87 mi
Operating · Fairfax County, VA
- 1.0 mi
Unnamed data center (way/251716311)
Operating · Fairfax County, VA
- 1.1 mi
Amazon Data Services, Inc. IAD-61 IAD-63 IAD-65 IAD-86
Operating · Loudoun County, VA
- 1.2 mi approximate
Proposed · Fairfax County, VA
What is on record
Owner
Owner not independently traced
Listed as Brian Clifford/DLA PIPER LLP (US) by Cleanview, DataCentersExposed. We have not verified that against a filing.
What the signal was
-
dce directory attribution
Brian Clifford/DLA PIPER LLP (US)
dce tracker export (© DataCentersExposed contributors, datacentersexposed.com, ODbL 1.0. Contains data © OpenStreetMap contributors.) · Jun 18, 2026
Filed by: FIREFOX
- Capacity
- not stated
- Building area
- 641,451 sq ft
- Diesel generators
- No air permit found in the records we collect
- Water
- Not collected. State water withdrawal permits are not in this build.
- Electric utility
- More than one utility serves this county, and no filing we hold names which one
- Also recorded as
- Brian Clifford/DLA PIPER LLP (US) · FIREFOX · Firefox Dulles · ZMAP-2021-0018
How the status changed
- Proposed Jun 18, 2026 inferred
DCE status 'proposed'
- Permitted Sep 8, 2026
Loudoun County VA GIS: pipeline (proposed) data center areas: Approved
Loudoun County VA GIS: pipeline (proposed) data center areas
- Proposed Sep 8, 2026 inferred
Cleanview status 'Planned'
Cleanview state pages: facility markers (id, name, coordinates, status, MW, county)
About this data
Evidence
Primary record
A government filing, a federal permit, an assessor parcel or the operator’s own page.
Location known to
Parcel boundary
Matched to an assessor parcel, so the boundary is the parcel.
Independent sources
3
assessor parcel, directory, government record. Directories count once between them, because they copy each other.
Spotted something wrong? Tell us and we will fix it.
Where this comes from
4 source records back this page. Each row is a document we retrieved and kept, so a claim can be checked against the original.
| Document | Role | Row | Date |
|---|---|---|---|
| Loudoun County VA GIS: pipeline (proposed) data center areas US-VA-Loudoun | Primary | OBJECTID=85 | Sep 8, 2026 retrieved by us |
| Cleanview state pages: facility markers (id, name, coordinates, status, MW, county) US | Primary | id=1783 | Sep 8, 2026 retrieved by us |
| dce tracker export (© DataCentersExposed contributors, datacentersexposed.com, ODbL 1.0. Contains data © OpenStreetMap contributors.) US | Primary | slug=firefox-dulles | Jun 18, 2026 last changed on the server |
| Virginia statewide parcels (VGIN) (point queries) US-VA assessor parcel 097409598000, owner of record None, match pin_on_facility | Corroborating | query=38.92061,-77.47289 | Sep 9, 2026 retrieved by us |
Cleanview (cleanview.co) © DataCentersExposed contributors, datacentersexposed.com, ODbL 1.0. Contains data © OpenStreetMap contributors.
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