# Microsoft Leesburg Data Center

PJM data center · https://askthegrid.com/assets/facilities/microsoft-leesburg-data-center

Microsoft operates a data center at 19515 Compass Creek Parkway in Leesburg, Loudoun County. In 2025 a failure at the Cochran Mill substation cut grid power for seven days and the site ran 62 emergency engines. Its air permit covers 104 diesel generators and 3 fire pumps. Virginia DEQ proposed a $2,499,000 civil charge for exceeding fuel and emission limits, and Microsoft cited a $31 million dual-feed system to reduce the chance of a repeat.

## Identity and location

- Operating status: operating
- Asset scope: facility
- Location: 19515 Compass Creek Parkway, Leesburg, Loudoun County, VA

## Power and grid context

- Electric utility: Northern Virginia Electric Cooperative
- Substation: Cochran Mill

## Sources

- [https://deq.zh-cn.virginia.gov/home/showpublisheddocument/25964/638633868143730000](https://deq.zh-cn.virginia.gov/home/showpublisheddocument/25964/638633868143730000)
- [Microsoft Faces Proposed Penalty Over Leesburg Data Center Air](https://hoodline.com/2026/09/microsoft-faces-proposed-virginia-civil-penalty-over-leesburg-outage/)
- [U.S. Department of Transportation address point](https://services.arcgis.com/xOi1kZaI0eWDREZv/ArcGIS/rest/services/Address_Points_from_National_Address_Database_view/FeatureServer/0/query?f=json&where=Add_Number%3D19515&geometry=-77.594129%2C39.0447869%2C-77.534129%2C39.1047869&geometryType=esriGeometryEnvelope&inSR=4326&spatialRel=esriSpatialRelIntersects&outSR=4326&outFields=%2A&returnGeometry=true&resultRecordCount=2000) — U.S. Department of Transportation
- [Virginia DEQ proposes $2.5M penalty against Microsoft's Leesburg data center](https://wheninyourstate.com/virginia/virginia-deq-proposes-2-5m-penalty-against-microsofts-leesburg-data-center/)
- [Microsoft ordered nearly $3M fine for air pollution from Northern Virginia data center](https://wjla.com/news/local/story/virginia-microsoft-northern-virginia-air-pollution-environmental-quality-fine-public-comment-pollutnats-quality-compass-creek-parkway)
- [Microsoft Moving Ahead with Compass Creek Data Centers | Business | loudounnow.com](https://www.loudounnow.com/business/microsoft-moving-ahead-with-compass-creek-data-centers/article_64a023de-a136-577b-84fd-91f12d299cf1.html)
- [DEQ Requires Microsoft to Pay $2.5M for Leesburg Data Center Air Pollution | News | loudounnow.com](https://www.loudounnow.com/news/deq-requires-microsoft-to-pay-2-5m-for-leesburg-data-center-air-pollution/article_1ea7d005-5c94-43d8-95ec-0cf060e13cbe.html)

## Data quality

- Power values retain their reported, requested, contracted, energized, gross-campus, or critical-IT basis.
- Map point: government rooftop address point.

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Canonical page: https://askthegrid.com/assets/facilities/microsoft-leesburg-data-center
Profile generated: 2026-10-09T21:21:24.130176Z
Source: Ask the Grid — https://askthegrid.com/