Spring Valley Technology Park
Loudoun County, VADeveloper: Active Infrastructure
Also known as LEGI-2024-0074
- Rumored
- Proposed
- Approved
- Under construction
- Operating
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Active Infrastructure seeks to rezone about 325 acres on Evergreen Mills Road near Beaverdam Reservoir, south of Leesburg, for a data center campus of about 3.25 million sq ft with three substations and on-site fuel cell power. The Planning Commission unanimously recommended denial in July 2026, citing scale, policy-area fit and impacts on the reservoir and nearby homes. The application now goes to the Board of Supervisors, which in September 2026 also directed staff to draft a 12-month pause on new data center applications.
Key facts
Size & schedule
| Site size | 325 acres [2] earlier plans cited 362 acres |
|---|---|
| Floor area | 3,250,000 sq ft [2] per Loudoun Now/DCD; Loudoun Times reports 3.84M sq ft; earlier plans up to 3.5M sq ft |
| Buildings | 12 [1] Loudoun Times and DCD report 12; Loudoun Now reports 10 |
How big is that? Data center sizes compared with football fields and Central Park.
Power
| Power supply | Natural gas-powered hydrogen fuel cells with battery storage, plus three on-site substations [5] |
|---|---|
| Backup generators | Tier 4 generators enclosed on six sides (applicant commitment) [9]Source excerpt“Those include committing to Tier 4 generators, which produce fewer emissions than standard Tier 2 generators; enclosing generators on six sides to reduce noise;” |
Water
| Cooling | Air-cooling technology (applicant commitment) [9]Source excerpt“committing to water quality controls and air-cooling technology; and providing significant buffering, open space and dark-sky lighting.” |
|---|
Local decisions & site
| Zoning | Rezoning of 325 acres from Transitional Residential-10 (TR-10) to Industrial Park requested [9]Source excerpt“The application, brought forward by Active Infrastructure, is seeking to rezone 325 acres from Transitional Residential – 10 to Industrial Park, allowing construction of 10 data center buildings, three substations, and a backup power storage facility.” |
|---|
Figures are as stated by the cited source. Where sources disagree, each figure is shown.
Water and power
Water
Not disclosed. No source reviewed gives a water figure for this site. The Census does not estimate one.
Power
| Power supply | Natural gas-powered hydrogen fuel cells with battery storage, plus three on-site substations [5] |
|---|
Disclosed figures only, each as the cited source states it. Many are projections or permit limits, not metered use. How data center water and power use is measured, and every disclosed figure →
Timeline
Active Infrastructure plans 3.5M sq ft fuel-cell-powered campus on Evergreen Mills Road [4]
Planning Commission votes 5-0 to recommend denial, following staff recommendation [1]
Board of Supervisors votes 7-1-1 to have staff draft a resolution pausing new data center applications for 12 months; final vote expected in October [7]
Issues raised
- Planning Commission cited scale and incompatibility with policy area, and impacts on neighborhoods and Beaverdam Reservoir [1]
- Residents and conservation groups raised water, air quality, noise, forest loss and Goose Creek concerns [1][5]
- Site includes a Spring Valley subdivision, a circa-1880 home and a family cemetery [2]
Issues are concerns and claims raised by the parties, officials or residents named in the cited sources. They are reported as attributed, not as findings by the Census.
Sources
- Planning Commission recommends denying 12-building data center campus near Beaverdam ReservoirLoudoun Times-Mirror · Jul 24, 2026 · news
- Active Infrastructure Eyes 3M Square Feet of Data Centers Along Evergreen MillsLoudoun Now · Jul 22, 2026 · news
- Loudoun Updates: Are Data Centers in Loudoun County Finally at a Tipping Point?Piedmont Environmental Council · Sep 9, 2026 · other
- Active Infrastructure looks to develop hydrogen-powered data center in Leesburg, VirginiaDatacenterDynamics · Oct 28, 2024 · news
- Spring Valley Technology ParkLoudoun Wildlife Conservancy · Jul 30, 2026 · other
- Loudoun County board pauses data center applicationsNBC4 Washington · Sep 15, 2026 · news
- Loudoun County votes to pause new data center applicationsWJLA · Sep 16, 2026 · news
- Loudoun County considering moratorium on new data center applications, rejects 3.25 million sq ft campusDatacenterDynamics · Jul 27, 2026 · news
- Loudoun Planning Commission Rejects 3M-Square-Foot Data Center CampusLoudoun Now · Jul 24, 2026 · news
Cite this page
Last updated Sep 23, 2026. Figures may change as records are updated — include the date you retrieved them.
| APA | Data Center Census. (2026). Spring Valley Technology Park. Retrieved from https://datacentercensus.com/dc/spring-valley-technology-park-loudoun-county-va |
|---|---|
| MLA | “Spring Valley Technology Park.” Data Center Census, Sep 23, 2026, https://datacentercensus.com/dc/spring-valley-technology-park-loudoun-county-va. |
| Link | https://datacentercensus.com/dc/spring-valley-technology-park-loudoun-county-va |
Republishing a figure or table? Attribute it to Data Center Census with a link to this page. The underlying data is downloadable as JSON and CSV; the press kit has standing figures and contact details.