# Amazon IAD-51 and IAD-56 Data Center Facility

PJM data center · https://askthegrid.com/assets/facilities/amazon-iad-51-and-iad-56-data-center-facility

Amazon Data Services IAD-51 and IAD-56 are data centers at 45220 and 45210 Prologis Plaza in Sterling, Loudoun County, on an 18.7-acre parcel owned by Prologis. They share Virginia DEQ air permit 74063 with IAD-88, IAD-89, IAD-192 and IAD-214. The permit, amended July 7, 2026, covers twenty-two 2,750 kW Caterpillar 3516E generators with SCR alongside earlier 2,500 kW and 2,000 kW Caterpillar emergency units, and allows operation during ISO-declared emergencies.

## Identity and location

- Operating status: operating
- Asset scope: facility
- Location: 45220 Prologis Plaza, Sterling, VA

## Development

- Construction: IAD-51 and IAD-56 share a Virginia DEQ permit with IAD-88, IAD-89, IAD-192 and IAD-214. Their 18.7-acre Prologis-owned parcel carries four commercial building records; the first, DC8 at 45190 Prologis Plaza, is an 88,504 sq ft data center built in 2012.

## Compute and operations

- Facility classes: hyperscale, cloud

## Sources

- [https://deq.zh-cn.virginia.gov/home/showpublisheddocument/37289/639195462842100000](https://deq.zh-cn.virginia.gov/home/showpublisheddocument/37289/639195462842100000)
- [U.S. Census street-address geocode](https://geocoding.geo.census.gov/geocoder/geographies/onelineaddress?address=45220+Prologis+Plaza%2C+Sterling%2C+VA%2C+20166&benchmark=Public_AR_Current&vintage=Current_Current&format=json)
- [Loudoun County](https://reparcelasmt.loudoun.gov/pt/datalets/datalet.aspx?mode=commercial&UseSearch=no&pin=045391908000)
- [Loudoun County](https://reparcelasmt.loudoun.gov/pt/datalets/datalet.aspx?mode=profileall&UseSearch=no&pin=045391908000)
- [Issued Air Permits for Data Centers | Virginia DEQ](https://web.archive.org/web/20261002062942/https://www.deq.virginia.gov/permits/air/issued-air-permits-for-data-centers)

## Data quality

- Power values retain their reported, requested, contracted, energized, gross-campus, or critical-IT basis.
- Map point: approximate U.S. Census street-address geocode.

---

Canonical page: https://askthegrid.com/assets/facilities/amazon-iad-51-and-iad-56-data-center-facility
Profile generated: 2026-10-09T04:03:13.152475Z
Source: Ask the Grid — https://askthegrid.com/