Data Center Census

Loudoun County, VA

Spring Valley Technology Park

Also known as LEGI-2024-0074

ProposedPlanning Commission recommended denial 5-0 on 2026-07-23; awaits Board of Supervisors decision (date TBD). Board directed a 12-month pause on new applications Sept 2026
  1. Rumored
  2. Proposed
  3. Approved
  4. Under construction
  5. Operating

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 size325 acres [2]
earlier plans cited 362 acres
Floor area3.3 million sq ft [2]
per Loudoun Now/DCD; Loudoun Times reports 3.84M sq ft; earlier plans up to 3.5M sq ft
Buildings12 [1]
Loudoun Times and DCD report 12; Loudoun Now reports 10

Power

Power supplyNatural gas-powered hydrogen fuel cells with battery storage, plus three on-site substations [5]
Backup generatorsTier 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

CoolingAir-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

ZoningRezoning 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.

Timeline

  1. Active Infrastructure plans 3.5M sq ft fuel-cell-powered campus on Evergreen Mills Road [4]

  2. Planning Commission votes 5-0 to recommend denial, following staff recommendation [1]

  3. 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]

Sources

  1. Planning Commission recommends denying 12-building data center campus near Beaverdam Reservoir
    Loudoun Times-Mirror · Jul 24, 2026 · news
  2. Active Infrastructure Eyes 3M Square Feet of Data Centers Along Evergreen Mills
    Loudoun Now · Jul 22, 2026 · news
  3. Loudoun Updates: Are Data Centers in Loudoun County Finally at a Tipping Point?
    Piedmont Environmental Council · Sep 9, 2026 · other
  4. Active Infrastructure looks to develop hydrogen-powered data center in Leesburg, Virginia
    DatacenterDynamics · Oct 28, 2024 · news
  5. Spring Valley Technology Park
    Loudoun Wildlife Conservancy · Jul 30, 2026 · other
  6. Loudoun County board pauses data center applications
    NBC4 Washington · Sep 15, 2026 · news
  7. Loudoun County votes to pause new data center applications
    WJLA · Sep 16, 2026 · news
  8. Loudoun County considering moratorium on new data center applications, rejects 3.25 million sq ft campus
    DatacenterDynamics · Jul 27, 2026 · news
  9. Loudoun Planning Commission Rejects 3M-Square-Foot Data Center Campus
    Loudoun Now · Jul 24, 2026 · news