Data center · Loudoun County, Virginia, United States
CyrusOne Loudoun Tech Center
CyrusOne Loudoun Tech Center is a data center in Loudoun County, Virginia, United States, operated by CyrusOne, LLC.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Loudoun County, Virginia | Virginia DEQ issued data center air permits · Public records · checked 24 Oct 2026 |
| Address | 21111 Ridgetop Circle, Sterling, VA 20166 | Virginia DEQ issued data center air permits · record · Public records · checked 24 Oct 2026 |
| Permit date | 1 Nov 2016 (permit number: 74086-3, program: Article 6 - mNSR) | Virginia DEQ issued data center air permits · record · Public records · checked 24 Oct 2026 |
| Operator | CyrusOne, LLC | Virginia DEQ issued data center air permits · record · Public records · checked 24 Oct 2026 |
| Backup generators | 86.3 MW (39 generator sets, permit number: 74086-3) | Virginia DEQ issued data center air permits · record · Public records · checked 24 Oct 2026 |
| Coordinates | 39.0247, -77.4138 | US Census Bureau Geocoder · Public domain · checked 24 Oct 2026 |
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How its operator compares
CyrusOne, LLC operates 5 of the 244 data centers in the United States in our data with a named owner; 6 owners have more. Counts cover the data centers in our data that name an owner, holder or operator; an asset with several owners counts for each.
| Operator in United States | Rank | Data centers | Share |
|---|---|---|---|
| Amazon Data Services, Inc. | 1st | 52 | 21% |
| Microsoft Corporation | 2nd | 21 | 8.6% |
| 3rd | 19 | 7.8% | |
| Meta | 4th | 17 | 7% |
| CoreWeave | 5th | 8 | 3.3% |
| CyrusOne, LLC | 7th | 5 | 2% |
Timeline
Dated facts about this data center from its sources, oldest first.
- Air permit to build issued (minor new source review), no. 74086-3
- CyrusOne, LLC on record as operator
Nearby
Within 50 km of this data center: 2 power plants (1 operating, 812 MW), measured from the coordinates in the facts above.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Dulles Solar and Storage | Power plant | 150 MW | Under construction | 11 km |
| Potomac Energy Center, LLC | Power plant | 812 MW | Operating | 12 km |
Operator and place
More from CyrusOne, LLC
- CyrusOne Kincoradata center
- CyrusOne Northern Virginia Data Center - Maries Roaddata center
- CyrusOne Sterling IX/X/XIdata center
- CyrusOne – NVA14data center
Other data centers in Virginia
Data on this page
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- Epoch AI. Epoch AI data centers, CC BY 4.0.
- US Census Bureau Geocoder. US Census Bureau Geocoder, Public domain.
- Virginia DEQ issued data center air permits. Virginia DEQ issued data center air permits, Public records.