6MAY

Prince William denies a 43m sq ft campus

2 min read

13:52UTC

Prince William County supervisors voted 8-0 on 7 July to reject the Dulles South data-centre campus, using zoning powers the county already held rather than a lawsuit or new statute.

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Key takeaway

Prince William blocked a giant campus with standing zoning, a refusal far harder to overturn than a moratorium.

The Prince William County Board of Supervisors voted 8-0 on Tuesday 7 July to deny the Dulles South Innovation Center, a 1,940-acre, 43-million-square-foot data-centre campus proposed by Sanders Lage Assemblage I LLC in the Gainesville district. ¹ Prince William sits at the western edge of the world's densest data-centre cluster, so a refusal here carries weight a rural county's would not. County staff had recommended denial because the site lay outside the Data Center Opportunity Zone Overlay District, the area zoned for such builds.

Supervisors cited the Occoquan watershed, which supplies drinking water to eight million people, and rejected what they called piecemeal development outside the county's 2040 Comprehensive Plan. No lawsuit, no new statute, no moratorium.

This was the county's second mega-rejection of 2026, and the more durable one. The neighbouring Digital Gateway campus died by a court ruling that voided its fast-track rezoning, and its developers dropped their remaining appeals the same week . Dulles South died by ordinary zoning, a refusal no appeal can easily reopen because the county simply applied rules it already held.

The demand behind the refusal has not moved: 43 million square feet of proposed capacity, in the busiest data-centre market on earth, blocked by tools already on the books.

Deep Analysis

In plain English

A Virginia county government voted unanimously, 8 to 0, to block a huge proposed data-centre complex, nearly 2,000 acres and 43 million square feet of buildings, because it would have put the local drinking-water supply at risk. The company behind the project, Sanders Lage Assemblage I LLC, will need a different site or a smaller plan if it wants to build in the area. This is the second major data-centre rejection in the same county in recent months. This time all eight supervisors voted to say no, well beyond the smaller faction that had opposed Digital Gateway.

Deep Analysis

Root Causes

The Occoquan watershed is the structural reason this vote succeeded where a purely procedural challenge like Digital Gateway's notice failure would not have: it supplies drinking water to roughly eight million people, giving supervisors a public-health rationale that survives legal challenge in a way a zoning-notice technicality does not.

Sanders Lage Assemblage I LLC's 43-million-square-foot proposal also arrived without the settlement leverage some Virginia developers have used elsewhere, such as pre-negotiated power or infrastructure deals; a raw rezoning ask, with no community commitments attached, gave the board nothing to trade against the water-supply risk.

What could happen next?

Precedent
A unanimous denial on watershed grounds gives Prince William a rationale other Virginia counties can cite without relitigating zoning-notice procedure.
Consequence
Sanders Lage Assemblage I LLC loses its Gainesville district site and must either resubmit at reduced scale or pursue a different county.

Source Landscape

This story draws on neutral-leaning sources

Primary parallel: The same board's Digital Gateway rezoning, a 2,000-acre, 37-building programme, was voided by the Virginia Court of Appeals in April for inadequate public notice, and Prince William declined to appeal rather than fight to revive it; Dulles South now fails for a different reason at a comparable scale, 1,940 acres against Digital Gateway's 2,000.

Counter-parallel: Loudoun County took the opposite structural route in the same period, stripping data centres of by-right zoning rather than denying individual projects outright, a standards-based approach that avoids a board vote on every application Prince William now faces one at a time.

Consensus view: The Piedmont Environmental Council, which has opposed large-scale Northern Virginia data-centre rezonings since the Digital Gateway fight, reads the 8-0 vote as confirmation that even the board's most development-friendly supervisors will now reject a large campus once a watershed argument is on the record.

Counter-view: NAIOP's Northern Virginia chapter, representing commercial developers, has argued in the Digital Gateway aftermath that county boards are moving the goalposts project by project rather than publishing clear siting standards, leaving developers unable to design around known constraints in advance.

Key tension: Whether Prince William's watershed rationale becomes a durable, publishable siting standard other Virginia counties adopt, or remains a case-by-case justification developers keep testing with new proposals.

Sources:WTOP

Mentions:Prince William County →Dulles South Innovation Center →Occoquan watershed →Digital Gateway →Virginia Court of Appeals →Northern Virginia →Virginia →

First Reported In

Update #10 · New York freezes data centres by decree

WTOP· 15 Jul 2026

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Causes and effects

Caused by

Prince William ends Digital Gateway fight

Prince William's Dulles South denial follows the same county's earlier Digital Gateway rezoning collapse and dropped appeal.

Occurred 10 May 2026

Read story →

This Event

Prince William denies a 43m sq ft campus

Virginia's densest data-centre county blocked a 43-million-square-foot campus with ordinary zoning, the most durable tool available.

Different Perspectives

Global hyperscale operators

Operators are still filing gigawatt-scale campuses and Meta is proceeding with its $10bn Lebanon, Indiana site despite the county-level bans nearby, betting Q2 capex outruns the patchwork of restrictions. Industry framing casts New York's freeze, Oregon's surcharge and Indiana's bans as taxes and levies that push build-out toward faster-permitting jurisdictions such as India and the Gulf.

EirGrid

EirGrid set a 900 MW instantaneous demand-loss ceiling because a single voltage dip can trip many data centres onto backup power at once, risking imbalance above 1,150 MW. It wrote the limit into a standing procedure rather than waiting for an emergency to force one.

US host communities and ratepayers

Prince William residents backed the 8-0 denial of Dulles South over the Occoquan watershed, drinking water for eight million people, while Oregon's approved tariff cuts residential bills 1.3% by charging large loads 29% more. Their position: consent and cost-attribution belong in law, not left to a developer's or a utility's discretion.

Hassan Allam Digital Infrastructure

Hassan Allam Digital Infrastructure, an Egyptian conglomerate rather than a foreign hyperscaler, reportedly secured a domestic hyperscale licence with a $400m first phase, per single-source reporting still to be verified. It reads as home-grown sovereign compute ambition, building national capacity rather than importing a US or Gulf operator's campus.

Damac Digital

Damac Digital keeps building toward roughly 6,000 megawatts of hyperscale capacity across 13 countries while Virginia taxes power and New York weighs a freeze. Every dollar or month of delay a US state adds is capacity a Gulf developer can site somewhere with faster permitting and no equivalent levy.

Acequia communities, Santa Fe County

Santa Fe County commissioners voted unanimously on 2 July to freeze any data centre over one megawatt, citing the acequia irrigation commons that has shared scarce water since Spanish colonial rule. They expect the low threshold to draw the same Fifth Amendment challenge RCM Hill brought against Hill County, Texas.