Northern Virginia Campus — Demo

Data center · Loudoun County, VA · target energization 2029-06-30

Tier 4 generator requirement (applications on or after July 1, 2026)

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Provenance

Authority

Virginia Department of Environmental Quality

Source document

Virginia HB 507 (2024) data center generator emissions — Va. Code § 10.1-1322.6 · effective 2026-07-01

Clause

Va. Code § 10.1-1322.6; DEQ APG-576 (Apr 9, 2026)

Trigger

Applies when generators are proposed (generator count >= 1); application date on/after 2026-07-01

Description

Va. Code § 10.1-1322.6 (HB 507) requires Tier 4 or equivalent emission performance for data center generator permit applications received on or after July 1, 2026; DEQ APG-576 sets a presumptive NOx limit of 0.60 g/hp-hr. Confirm the procured units meet it before the application is filed; a non-Tier 4 spec is a re-design.

Evidence required

Manufacturer emission certification (Tier 4 / 0.60 g/hp-hr NOx) for the specified units.

Edit

TitleCodeGateCategoryAuthoritySource documentClauseStatusOwnerOwner roleDue dateDuration (working days) Veto pointNext actionDescriptionEvidence required

Evidence (0)

Nothing attached. A requirement is only satisfied with evidence.

Dependencies

Must finish first (1)

Generator fleet emissions inventory and permit pathway determination Not started FS

Waits on this (1)

Air permit — state major NSR plus Title V operating permit Not started