Amazon Data Services IAD-500 and IAD-501
approved CampusOperated by Amazon Data Services, Inc.
Virginia DEQ issued Amazon Data Services, Inc. an air permit (Registration No. 74300) on March 12, 2025 to construct and operate diesel generator sets at the IAD-500 and IAD-501 data center campus in Herndon, Fairfax County. The equipment list covers 70 MTU 20V4000 DS2800 non-emergency gen-sets rated 2,750 ekW each with selective catalytic reduction and catalyzed diesel particulate filters, 2 MTU 16V2000 units at 1,000 ekW, and 2 Caterpillar 3516C units at 2,000 ekW.
Land use jurisdiction: Town of Herndon
Measurements on record
Approvals, by aspect
| Aspect | Approving body | Instrument | Status |
|---|---|---|---|
| Air permit (backup generators) | Virginia Department of Environmental Quality | Article 6 minor NSR permit to construct and operate, Registration No. 74300 (2025-03-12) document |
on record |
| Land use entitlement (CUP / rezoning) | not yet requested | ||
| CEQA review | not yet requested | ||
| Building permit | not yet requested | ||
| Water supply (will-serve) | not yet requested | ||
| Wastewater / septic | not yet requested | ||
| Stormwater / retention ponds / dry wells | not yet requested | ||
| Grid interconnection | not yet requested | ||
| Natural gas supply | not yet requested | ||
| Tax abatement / development agreement | not yet requested |
Location and sources
Herndon, Fairfax County, Virginia
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