Why 3/5: The bill establishes new emission standards for data centers effective July 1, 2026, impacting future air quality.
Starting July 1, 2026, new data centers in Virginia will face stricter operational requirements, as their engine-generators must meet or exceed Tier 4 emission standards to receive air permits. This change aims to reduce air pollution by ensuring that backup power systems for data centers operate with lower emissions.
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Constitutional reading dispensed Block Vote (on 2nd reading) (39-Y 0-N 0-A)
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Passed by for the day Block Vote (Voice Vote)
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Passed by for the day Block Vote (Voice Vote)
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Passed by for the day
Third reading
Read third time
Passed a chamber
Passed Senate (25-Y 15-N 0-A)
Enrolled
Enrolled
Passed a chamber
Bill text as passed House and Senate (HB507ER)
Passed a chamber
Signed by President
This bill has passed its votes and is headed to the Governor's desk. You still have a say — the Governor's office reads messages before deciding whether to sign.
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Summarized from the official bill text (“Data centers; permit requirements, emission limits for certain engine-generator sets.”) · Read the actual bill →
Passed a chamber
Signed by Speaker
Enrolled
Enrolled Bill communicated to Governor on March 31, 2026
Sent to the Governor
Governor's Action Deadline 11:59 p.m., April 13, 2026
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Fiscal Impact Statement from Department of Planning and Budget (HB507)
Signed into law
Approved by Governor-Chapter 397 (effective 7/1/2026)
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Acts of Assembly Chapter text (CHAP0397)