---
type: "Bill"
title: "Data centers; permit requirements, emission limits for certain engine-generator sets."
description: "Permit requirements for data centers; emission limits for certain engine-generator sets. Prohibits the Department of Environmental Quality from issuing an air permit for any application submitted for a data center on or after July 1, 2026, unless the emission limit for each engine-generator, defined in the bill, established by such permit is equal to or less than the emissions achieved by a Tier 4 equivalent engine-generator."
jurisdiction: "us/states/va"
legislature: "Virginia General Assembly"
session: "2026"
identifier: "HB 507"
citation: "Virginia HB 507 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["John Chilton McAuliff"]
version_count: 5
action_count: 33
vote_count: 6
first_action: "2026-01-12"
last_action: "2026-04-08"
source: "openstates"
source_identifier: "ocd-bill/539e103a-2922-4234-a279-6ed5881c3164"
source_url: "https://lis.virginia.gov/bill-details/20261/HB507"
source_hash: "e09a42b10a95f4736653a5aad187a72cdae5a4d8e05b91362e66bab5a6e8cf48"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-va"]
---

# Virginia HB 507 (2026) — Data centers; permit requirements, emission limits for certain engine-generator sets.

Permit requirements for data centers; emission limits for certain engine-generator sets. Prohibits the Department of Environmental Quality from issuing an air permit for any application submitted for a data center on or after July 1, 2026, unless the emission limit for each engine-generator, defined in the bill, established by such permit is equal to or less than the emissions achieved by a Tier 4 equivalent engine-generator.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](https://lis.blob.core.windows.net/files/1084724.PDF)
2. **Agriculture, Chesapeake and Natural Resources Substitute** (committee substitute) — [source](https://lis.blob.core.windows.net/files/1141274.PDF)
3. **Chaptered** (committee substitute) — [source](https://lis.blob.core.windows.net/files/1217630.PDF)
4. **Natural Resources Subcommittee Substitute** (committee substitute) — [source](https://lis.blob.core.windows.net/files/1142417.PDF)
5. **Enrolled** (enrolled) — [source](https://lis.blob.core.windows.net/files/1210694.PDF)

## Votes

- Subcommittee recommends reporting with substitute — **7–3** (pass) · lower
- H VOTE: — **60–34** (pass) · lower
- Reported from Agriculture, Conservation and Natural Resources — **10–5** (pass) · upper
- Reported from Agriculture, Chesapeake and Natural Resources with substitute — **16–6** (pass) · lower
- Passage R — **25–15** (pass) · upper
- Constitutional reading dispensed (on 2nd reading) — **39–0** (pass) · upper

## Sponsors

- John Chilton McAuliff — primary (person)
- JJ Singh — cosponsor (person)
- Joshua E. Thomas — cosponsor (person)
- Shelly A. Simonds — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2026-01-12** Prefiled and ordered printed; Offered 01-14-2026 26104969D `filing, introduction`
- **2026-01-12** Referred to Committee on Agriculture, Chesapeake and Natural Resources `referral-committee`
- **2026-02-09** Assigned HACNR sub: Natural Resources `referral-committee`
- **2026-02-09** Fiscal Impact Statement from Department of Planning and Budget (HB507)
- **2026-02-11** House subcommittee offered
- **2026-02-11** Subcommittee recommends reporting with substitute (7-Y 3-N) `substitution`
- **2026-02-11** Reported from Agriculture, Chesapeake and Natural Resources with substitute (16-Y 6-N) `committee-passage`
- **2026-02-11** Committee substitute printed 26107698D-H1 `substitution`
- **2026-02-13** Read first time `reading-1`
- **2026-02-16** Fiscal Impact Statement from Department of Planning and Budget (HB507)
- **2026-02-16** Read second time `reading-2`
- **2026-02-16** committee substitute agreed to `substitution`
- **2026-02-16** Engrossed by House - committee substitute `substitution`
- **2026-02-17** Read third time and passed House (61-Y 34-N 0-A) `passage, reading-3`
- **2026-02-18** Constitutional reading dispensed (on 1st reading)
- **2026-02-18** Referred to Committee on Agriculture, Conservation and Natural Resources `referral-committee`
- **2026-03-03** Reported from Agriculture, Conservation and Natural Resources (10-Y 5-N) `committee-passage`
- **2026-03-05** Rules suspended
- **2026-03-05** Constitutional reading dispensed Block Vote (on 2nd reading) (39-Y 0-N 0-A)
- **2026-03-05** Passed by for the day Block Vote (Voice Vote)
- **2026-03-06** Passed by for the day Block Vote (Voice Vote)
- **2026-03-09** Passed by for the day
- **2026-03-10** Read third time `reading-3`
- **2026-03-10** Passed Senate (25-Y 15-N 0-A) `passage`
- **2026-03-30** Enrolled `enrolled`
- **2026-03-30** Bill text as passed House and Senate (HB507ER) `passage`
- **2026-03-30** Signed by President `passage`
- **2026-03-31** Signed by Speaker `passage`
- **2026-03-31** Enrolled Bill communicated to Governor on March 31, 2026 `enrolled, executive-receipt`
- **2026-03-31** Governor's Action Deadline 11:59 p.m., April 13, 2026 `executive-receipt`
- **2026-04-01** Fiscal Impact Statement from Department of Planning and Budget (HB507)
- **2026-04-08** Approved by Governor-Chapter 397 (effective 7/1/2026) `executive-signature`
- **2026-04-08** Acts of Assembly Chapter text (CHAP0397)

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/539e103a-2922-4234-a279-6ed5881c3164`. Confidence: reported (aggregated from official Virginia legislature records).