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Virginia fines a Microsoft data center for emissions violations

Virginia fines a Microsoft data center for emissions violations

Summary

Virginia fined Microsoft nearly $2.5 million because its Leesburg data center exceeded pollution limits during an equipment failure in June 2025. Microsoft agreed to invest $2.4 million in a local project to monitor air quality in Loudoun County, an area with a high number of data centers.

Key Facts

  • Virginia's Department of Environmental Quality fined Microsoft $2.5 million for emissions violations at its Leesburg data center.
  • The data center ran 62 emergency engines for seven days after an electrical substation failure in June 2025.
  • Pollutants released included carbon monoxide (CO), volatile organic compounds (VOC), and fine particulate matter (PM10 and PM2.5).
  • Microsoft will invest $2.4 million to help expand air-quality monitoring in Loudoun County, known as "Data Center Alley."
  • Loudoun County has over 250 data centers, raising community concerns about pollution and health effects.
  • The county board voted to pause approval of new data center applications for one year starting September 15, 2025, but applicants can still submit proposals.
  • Critics want stricter rules for future data center construction to reduce environmental impact.
  • Supporters of data centers highlight their economic benefits, including a projected $1.3 billion in local tax revenue.
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