Has Sentinel Ashburn Nexus Data Center had environmental violations?

As of the latest EPA ECHO sync, no enforcement actions are on record for Sentinel Ashburn Nexus Data Center.

Where is Sentinel Ashburn Nexus Data Center located?

Sentinel Ashburn Nexus Data Center is in Sterling, Loudoun County, VA.

Operating

Sentinel Ashburn Nexus Data Center

Q: What do data center tax breaks cost in Virginia?

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). That is a statewide program figure, not attributable to one site.

22262 Cloud Plaza · Sterling, Loudoun County, VA

Source: OpenStreetMap

Sentinel Ashburn Nexus Data Center is an operating data center in Loudoun County, VA. DataCentersExposed has documented a 224,621 sq ft footprint at this site.

Reporting by Eric Keller · Updated Jun 14, 2026

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Real parent

—

Operator

—

Est. capacity

~40-90 MW

Footprint

224,621 sq ft

Interconnection

~175 MW

Utility

Virginia Electric & Power Co

Grid

PJM

Attribution & capacity confidence:mediumprimary source

Status · click to filter

Most sites are mapped — located but awaiting a second source. How we verify

Dot size = disclosed capacity (MW). Smallest = undisclosed, not small.

Overview

source: link

Google

In the news

source: Google News

Tax breaks & subsidies

source: Good Jobs First / GASB 77

No 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.

Statewide cost of this incentive

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.

source · All Virginia subsidies →

Water use

Modeled estimate~3.3M gpd

Direct (onsite cooling)

~1.6M gpd

Indirect (its electricity)

~1.7M gpd

No measured record exists, so this is a low-confidence model from 175 MW (interconnection capacity): 1.8 L/kWh cooling (temperate climate) + 0.5 gal/kWh embedded in PJM grid mix. How we estimate. Have a utility document? Send it and we'll replace this with the real figure.

EPA permits & violations

source: EPA ECHO

No reported violations as of last sync.

Environmental permits

source: Permit register

Clean Air Act permitted sourceVA0000005110774156
NAICS 518210; ECHO compliance status: No Violation Identified
VA DEQ air permit (minor NSR)74156
Diesel backup-generator air permit. Program: mNSR. Reg. 74156.

What this site costs the grid

source: PJM RPM auction reports

Dominion (Virginia / NC) · 2027/28 auction

$333 /MW-day

Peaked at $444/MW-day in 2025/26 — 1.65× the rest of PJM

PJM'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 →

This site's capacity-market cost (estimated)

$4.9M to $10.9M/yr

An estimated ~40 to 90 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: AirNow

PM2.5

Moderate

Good

PM10

Good

Air 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 2023

Median household income

$131.4K

People of color

64%

Below poverty

Tract population

7,191

Demographics 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 / NCES

The nearest public school, Guilford Elementary in Sterling, is 1.3 mi from this site (541 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.