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Key developments
Virginia sets Tier 4 data-center generator rule
The Code of Virginia published a 2026 update requiring data-center permit applications submitted on or after July 1, 2026 to meet emissions limits equal to or below those achieved by Tier 4-equivalent engine-generator sets. The rule defines Tier 4 equivalent as including selective catalytic reduction for nitrogen oxides, diesel oxidation catalyst controls for carbon monoxide, and diesel particulate filtration for particulate matter. It also preserves the Department’s authority to impose stricter BACT, LAER, RACT, NSPS, or NESHAP-based limits.
Why it matters
Virginia is the world’s largest data-center market, and backup-generator emissions rules can directly affect permitting, cost, and site design.
Sources & driving stories
CODE OF VIRGINIA
Code of Virginia coveragePrince William Digital Gateway is formally dead
OilPrice.com reported that Blackstone-owned QTS Realty Trust withdrew its Virginia Supreme Court appeal on July 2, ending the Prince William Digital Gateway fight. The 2,100-acre Prince William County proposal would have included 37 buildings and about 22 million square feet of data centers near Manassas National Battlefield Park, with an estimated $100 billion full build-out cost. Compass Datacenters dropped its appeal in April, and a prior rezoning was voided after a Virginia Court of Appeals ruling on defective public notice.
Why it matters
The collapse shows that even the largest, best-capitalized data-center projects remain vulnerable to land-use litigation and organized local opposition.
Sources & driving stories
OILPRICE.COM
OilPrice.com coverageDATA CENTER RICHNESS · Rich Miller
Data Center Richness coverageFederal ratepayer bill advances, but critics object
The Guardian reported that the bipartisan Ratepayer Protection Act moved through a House subcommittee in mid-June, while a full committee vote scheduled for July 1 was delayed. Critics including Food and Water Watch’s Jim Walsh and the Center for Biological Diversity’s Camden Weber argue the bill relies largely on voluntary guidance to state utility commissions while also including provisions that could speed grid interconnection and reduce NEPA review for infrastructure tied to data centers. Yahoo Finance’s Jennifer Green reported that sponsors frame the bill as shifting more grid-upgrade costs from households and small businesses to large-load customers.
Why it matters
The bill is becoming a federal test of whether AI data-center grid costs will be socialized through utility rates or assigned to developers.
Sources & driving stories
THE GUARDIAN
The Guardian coverageYAHOO FINANCE · Jennifer Green
Yahoo Finance coverageWorth noting
WORTH NOTING
Mississauga hyperscale opposition intensifies
The Pointer’s Anushka Yadav reported that Prologis’ roughly 220,015-square-foot proposal is Mississauga’s first hyperscale data-center application, with residents and councillors pressing for a moratorium after a June 25 town hall over noise, diesel emissions, water use, grid capacity, and property values.
WORTH NOTING
Abbott urges rural data-center limits
Texas Governor Greg Abbott said AI data centers should not be built in rural Texas neighborhoods and called for developers to fund their own power and water needs, while also seeking limits on incentives and new reporting rules.
WORTH NOTING
Sovereign AI compute funding grows
Yahoo reported that Abu Dhabi’s MGX closed its first fund on July 1 at $49 billion, while Saudi Arabia’s HUMAIN is targeting 1.9 GW of AI-dedicated data-center capacity by 2030 and up to 6.6 GW later.
Still unclear
OPEN QUESTION
Will ratepayer protections have enforceable teeth?
The current federal bill appears to combine cost-shift language with voluntary state-commission guidance, leaving open whether households will actually be insulated from data-center-driven grid spending.
OPEN QUESTION
Are local moratoriums becoming the default response?
New resistance in Virginia, Mississauga, Texas, Tennessee, North Carolina, New Mexico, and Pennsylvania suggests developers may increasingly need preemptive answers on power, water, noise, emissions, and local tax value.