Microsoft Blue Ridge (IAD11-12-13) Data Center, in order
What happened with this project, oldest first: the stages it reached, what the county and its cities decided, and every dated step on the record. Each entry links its source.
2 events, January 1, 2024 to March 2025. Also on the record, under the month each belongs to: 7 figures from other sources and 5 lines that are not events of their own. The facts, newest first: the record; the place: Virginia.
A plain date is the day it happened, as the source states it, or as the line's own sentence states it ("voted on July 6"), which is where the line sits even when it was filed later. "Reported" and a date is the day a source published a line that carries no date of its own. Those lines, and lines that describe rather than report an act, sit under their month rather than on the timeline, with what was said and the figures other sources gave. Every timeline on the site reads its lines by this one rule. How dates are read.
2024 1 event
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(the year its own sentence names; filed under Sep 21, 2026)
Decision · Loudoun County (county)
Loudoun County Board of Supervisors launched data center policy review project in 2024 patch.com
2025 1 event
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(the month its own sentence names; no day is given; filed under Sep 21, 2026)
Decision · Loudoun County (county)
Phase one of Loudoun County data center policy overhaul was approved in March 2025 and ended by right data center development except for already approved projects patch.com
2026 12 under the months
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Also in September 2026: 7 figures from other sources and 5 lines that are not events of their own
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(source date; the content gives no date of its own)
Decision · Loudoun County (county)
Virginia's Loudoun County is considering limits on new data centers after decades of rapid growth baltimoresun.com
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(source date; the content gives no date of its own)
Decision · Loudoun County (county)
Loudoun County Board of Supervisors voted 7-1-1 to direct staff to prepare a 12 month pause resolution on data center and substation applications, effective September 15, 2026. yahoo.com
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(source date; the content gives no date of its own)
Figure · Technical.ly
2,500,000 USD: Virginia's environmental quality agency is ordering Microsoft to pay $2.5 million for exceeding set limits during a weeklong 2025 outage Technical.ly local outlet
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(source date; the content gives no date of its own)
Figure · WJLA
102 tons: From October 4, 2024 to October 3, 2025, Microsoft's facility NOx emissions were approximately 102 tons against permit limit of 94.67 tons WJLA local outlet
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(source date; the content gives no date of its own)
Figure · WJLA
5.16 tons: From October 4, 2024 to October 3, 2025, Microsoft's facility PM emissions were approximately 5.158 tons against permit limit of 3.34 tons WJLA local outlet
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(source date; the content gives no date of its own)
Figure · WJLA
31,000,000 dollars: Microsoft invested approximately 31 million dollars to install a system to prevent future extended outage WJLA local outlet
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(source date; the content gives no date of its own)
Figure · WJLA
1,190,000 gallons: Fuel throughput at Microsoft facility from October 4, 2024 to October 3, 2025 was approximately 1,190,000 gallons against permit limit of 665,850 gallons WJLA local outlet
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(source date; the content gives no date of its own)
Figure · WJLA
2,500,000 dollars: Virginia Department of Environmental Quality ordered Microsoft to pay approximately 2.5 million dollars for air pollution violations WJLA local outlet
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(source date; the content gives no date of its own)
Figure · WJLA
11.6 tons: From October 4, 2024 to October 3, 2025, Microsoft's facility VOC emissions were approximately 11.599 tons against permit limit of 6.86 tons WJLA local outlet
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(source date; the content gives no date of its own)
Decision · Loudoun County (county)
Loudoun County had already removed data centers as a by right zoning option and is exploring removing by right status to grandfathered projects datacenterdynamics.com
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(source date; the content gives no date of its own)
Decision · Loudoun County (county)
Loudoun County holding two open house meetings on September 28 and 30, 2026 to discuss phase two data center policy standards patch.com
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(source date; the content gives no date of its own)
Decision · Loudoun County (county)
Virginia Loudoun County moved future projects to special exception process commercialobserver.com
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On the timeline: a stage change; an entry that reports an act on the day the source or its own sentence gives; and a decision, a published scorecard event on a row at or under the record's county, that reports an act. Under the months: a statement that names this record, a figure another source gave about it, matched by place and developer, an entry dated only by the day its source was published, and an entry or a decision that describes rather than reports an act. Each is on the record in its own right and keeps its own link.
For researchers
- Slug
- microsoft-blue-ridge-iad11-12-13-data-center-aldie-va
- Status value
- not_verified
- Events on the timeline
- 2
- Under the months
- 12
- Stage changes
- 0
- Decisions
- 7
- Statements
- 0
- Figures
- 7
- Entries and decisions under the months
- 5