A BILL to direct the Department of Environmental Quality to conduct a study that researches and models a variety of scenarios regarding aggregate air pollution in areas with a large volume of data centers and provide recommendations for future handling of minor air permits for generators and the need for increased air quality monitoring in the Commonwealth; report.
HB607 directs the Virginia Department of Environmental Quality to conduct a three-year study on aggregate air pollution associated with data centers in areas with a high concentration of such facilities. The study is intended to model multiple operating scenarios for data center generators, including planned outages, grid-strain outages, demand response use, and use as primary power when grid power is unavailable. It also requires the Department to compare maximum emissions against 2025 baseline use and assess how generator operations may contribute to cumulative air pollution beyond what is captured by individual minor air permits.
The bill requires the Department to examine emissions, geographic dispersion, timing and duration of generator use, and public health effects of different pollution exposure patterns. It specifically directs attention to impacts on nearby and distant communities, sensitive receptors such as schools, daycares, hospitals, and the elderly, as well as environmental justice communities and areas already burdened by poor air quality. The Department must report findings and recommendations by October 1, 2029, to legislative committee chairs and the Secretary of Natural and Historic Resources.
The bill does not directly change permitting standards or air quality rules, but it would require DEQ to undertake a formal study that could inform future regulation of minor air permits for data center generators and future air monitoring requirements. Its practical effect would be to create an evidentiary basis for possible changes to how cumulative emissions from multiple generators are evaluated, especially in data center-heavy regions. The study could influence future state policy on air pollution modeling, environmental justice analysis, and public health protections related to generator emissions.
The available context suggests the bill was treated as a study measure rather than a contentious regulatory overhaul, and it was continued to the next session in the Rules Committee by voice vote. That procedural outcome indicates no recorded floor opposition in the available history, but also that the bill did not advance immediately. Overall, the bill appears to have been received as a cautious, information-gathering proposal focused on a growing environmental issue tied to data center development.
The main policy tension in HB607 is between data center operations and air quality/public health concerns. Supporters of the study are likely concerned that existing minor air permits evaluate generators individually and may not capture cumulative pollution from many generators operating in the same area. Potential points of contention include whether data center backup generators should be treated more strictly, how to weigh demand response and outage-related emissions, and whether the bill could lead to tighter future permitting or monitoring requirements. The bill also highlights concern for environmental justice communities and sensitive populations, which may raise debate over where and how future restrictions should apply.