Amazon IAD-1
4101 Westfax Drive · Chantilly, Fairfax County, VA
Source: OpenStreetMap
Amazon IAD-1 is an operating data center in Fairfax County, VA, operated by Amazon Data Services, Inc. and ultimately owned by Amazon.com, Inc.. DataCentersExposed has documented a 93,882 sq ft footprint at this site.
Reporting by Eric Keller · Updated Jun 14, 2026
Overview
source: linkIAD-1 is an operating Amazon Web Services data center in Chantilly, Fairfax County, Virginia, run by Amazon Data Services, Inc. and owned through its parent, Amazon.com, Inc. Its reported footprint is 93,882 square feet. The site draws power from Virginia Electric & Power Co inside the PJM grid.
Operator chain
- Ultimate parentAmazon.com, Inc.
- Files asAmazon Data Services, Inc.
- This facilityAmazon IAD-1
Grid & water — why here
source: HIFLD · EPAThe closest existing grid infrastructure and the municipal water system this location sits in — the same constraints the buildout model screens on (it won't site a campus more than ~2 km from a substation or ~5 km from municipal water). Distances are straight-line to public HIFLD/EPA features, not a metered connection.
In the news
source: Google News- Developer seeks zoning change for Chantilly flex building to broaden tenant poolThe Business Journals· May 13, 2026
- Amazon acquires leased data center in Virginia for $65 millionData Center Dynamics· May 12, 2026
- Data center powered by natural gas fuel cells pitched in ChantillyThe Business Journals· May 12, 2026
- Amazon buys 44 acres in Prince William County, VirginiaData Center Dynamics· Apr 14, 2026
- Fairfax County OKs Chantilly land sale to data center builder, as some cry foulFFXnow· Mar 19, 2026
- General Assembly’s data center tax dispute leaves Va. budget unresolvedFFXnow· Mar 17, 2026
Tax breaks & subsidies
source: Good Jobs First / GASB 77No per-deal tax break is linked to this site yet. No state discloses the recipient of a data-center abatement at the facility level, so per-site deals are rare in the public record. If you have a development agreement or board resolution for this site, send it to us.
Virginia reported $1B in Data Center Retail Sales and Use Tax Exemption (Va. Code § 58.1-609.3(18)) for FY2024 (Virginia Joint Legislative Audit and Review Commission (JLARC) / Weldon Cooper Center). Program-wide, not attributable to this site.
Water use
No public record of this facility's water use. We check state withdrawal reporting for self-supplied sites; municipally supplied sites only become visible through a public-records request to the local water utility — a per-facility request tool is coming. If you have a utility document for this site, send it to us.
EPA permits & violations
source: EPA ECHONo reported violations as of last sync.
Environmental permits
source: Permit register- VA DEQ air permit (minor NSR)73294Diesel backup-generator air permit. Program: mNSR. Reg. 73294.
What this site costs the grid
source: PJM RPM auction reportsPJM's capacity auction sets a $/MW-day price that utilities pass on to every household and business in the zone. This site sits in PJM's DOM pricing zone, where soaring data-center demand is a documented driver. See the full zone-by-zone breakdown →
An estimated ~15 to 40 MW of load at the zone's $333/MW-day, annualized — the capacity charge a load this size carries at the current auction price. Estimated from the building footprint at 200 to 400 W/ft² (the typical range for modern data centers). A rough order-of-magnitude figure, not a metered or permitted capacity.
Separately, a typical home in this zone pays an estimated $4 to $10/mo more on the capacity portion of its bill that PJM's market monitor attributes to data-center demand. See your address's full impact →
Air quality near this site
source: AirNowAir Quality Index from the nearest AirNow reporting area (Northern Virginia), as of 2026-06-10. Regional context — not this facility's own emissions.
Who lives nearby
source: Census ACS 2023Demographics of the census tract this facility sits in (American Community Survey 5-year estimates). Environmental-justice context for who bears the local impacts.
Nearest school
source: HIFLD / NCESThe nearest public school, Westfield High in Chantilly, is 1.0 mi from this site (2,686 students).
Schools are sensitive receptors for the noise, backup-generator exhaust, and traffic a large data center brings. Straight-line distance to the nearest public school (HIFLD/NCES, US public schools only).
Hearings timeline
No public-hearing records linked to this site yet. We surface planning-commission and board-of-supervisors dates when a record names a facility. If you know of a hearing on this site, tell us.