Data centers in Fairfax County, Virginia: a source-linked guide

Upcoming: Planning Commission public hearing on the Dominion Edsall Road substation (2232 review) serving the Plaza 500 data center area. The hearing was postponed from Sep 24 at Dominion's request (Patch).

Public hearing advertised on a zoning ordinance amendment aligning with state law that took effect Jul 1, 2026 (HB 153/SB 94): data center rezoning and special exception applications must include a noise study and the anticipated megawatts; for facilities expected to need 100 MW or more, also a sound profile for homes and schools within 500 feet and a utility statement on serving substations and transmission voltage (Fairfax County agenda and Board memo). [Unverified: the hearing outcome was not confirmed.]

Board unanimously directed staff to stay engaged with the Spanberger administration on state data center rules, focusing on community benefit plans, communication with residents and energy affordability, with a report back within 120 days (FFXnow).

Nature Forward reports the Vienna Cloud developer indefinitely deferred its Tysons data center application in late September 2026 (exact day not stated) and the November public hearing was removed from the calendar. Nature Forward is an advocacy group that opposes the project and expects it to be resubmitted.

Patch reported the Edsall Road substation hearing was postponed from Sep 24 and that the Plaza 500 developer had filed a building permit application in July for the first of two data center buildings. Patch also reports opposition from nearby residents, the City of Alexandria and Rep. Beyer.

DEQ's list of issued air permits for data centers shows registration 74332-2 (Article 6 - mNSR) issued 2026-07-31 to Herndon Technology Partners LLC in Fairfax County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74239-2 (Article 6 - mNSR) issued 2026-07-29 to Amazon Data Services Inc - IAD-134/135/136 in Fairfax County. The list gives no project size or status; the entry says nothing about whether the facility is built.

Planning Commission voted 8-0 on the Avion Substation application (2232-2025-SU-00006). The action document is the source, it does not say whether the substation serves a specific data center.

DEQ's list of issued air permits for data centers shows registration 74336-1 (Article 6 - mNSR) issued 2026-05-22 to Word of Grace Data Center in Fairfax County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 72375-9 (Article 6 - mNSR) issued 2026-03-10 to Chantilly Technology Partners, LLC/H5 VA in Fairfax County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74331-1 (Article 6 - mNSR) issued 2026-03-04 to Westfax Property Owner A LP/Westfax 4-5A in Fairfax County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74154-5 (Article 6 - mNSR) issued 2026-03-02 to Aerospace Data Facility - East in Fairfax County. The list gives no project size or status; the entry says nothing about whether the facility is built.

Planning Commission voted 10-0 (one absent, one recused) that Dominion's Singer Substation at 14701 Willard Road, Chantilly is consistent with the Comprehensive Plan. It would serve two planned data centers at 4260 Entre Court and Bogle Drive.