A proposed Environmental Protection Agency rule change could reshape how much notice communities receive before certain polluting facilities are built or expanded near them. The issue is becoming more visible as AI data centers grow and some operators turn to gas plants and diesel generators for power.
The proposal would not change emissions standards, according to an EPA spokesperson. Its practical impact would be on process: who gets notified, when the public can weigh in, and how much opportunity residents have to review permits for some new or modified sources of air pollution.
What the EPA proposal would change
On Wednesday, the Environmental Protection Agency held a public hearing on a proposed rule that would give states the authority to decide how the public participates in permitting for certain new sources of air pollution. The source article describes the change as one that could make it easier for polluters to build facilities with limited or no public notice.
The proposal matters because public participation is often the point at which neighbors, community groups, and legal advocates learn what is planned. For facilities tied to data centers, that may include the power infrastructure behind the project, such as gas plants or diesel generators.
An EPA spokesperson told WIRED that, if finalized, the rule “would put state and local agencies most familiar with local issues in the driver’s seat to determine whether, when, and for how long to provide opportunities for public participation for proposed new minor sources and modifications.” The spokesperson also said the rule would not alter emissions standards.
Why minor air permits matter for data centers
Facilities that release air pollution need permits under the Clean Air Act. The source explains that polluting sources can go through either a “major” permitting process or a “minor” one, depending on whether they meet or exceed thresholds for certain pollutants.
Major sources face review from federal and state regulators and come with broader requirements before and after construction. Minor sources receive less oversight, yet the category can cover a wide range of facilities, including dry cleaners, auto body shops, diesel engines, and gas engines.
That broad category is now relevant to the data center buildout. Diesel and gas engines are increasingly being used to power data centers, and operators such as xAI and Meta have used minor source permitting processes to build behind-the-meter gas plants.
For communities, the label matters because the process attached to a permit can determine how early residents hear about a project and whether they have a meaningful chance to respond. If more decisions are left to state and local agencies, the amount of public input may depend even more heavily on where a facility is proposed.
Public notice already varies by state
The Clean Air Act requires public involvement in permitting processes. Congress has specified several public steps for major sources, including a public hearing. EPA rules also require some public participation for minor source permits.
But the source article notes that state enforcement laws create a patchwork. Public engagement can differ widely across the US, and so can the question of whether state agencies are meeting EPA requirements.
That state-by-state variation is central to the concern. In places with stronger public notification systems, community and legal groups may be able to identify projects early, review air permit applications, and raise concerns before construction advances. In places with weaker processes, residents may have less warning about nearby fossil fuel infrastructure.
Keri Powell, an Atlanta-based attorney at the environmental legal advocacy group Southern Environmental Law Center, pointed to Georgia as a state with a more robust public notification and participation process for minor sources. Earlier this month, the group alerted the state utility about construction issues at a data center using information obtained from public air permit applications.
Powell warned that removing the federal requirement could leave community and legal groups with little to no advance notice of upcoming projects and reduce their ability to participate in review. “Georgia is an example of a place where I can say I’m concerned,” Powell says.
Sara Lips, the director of communications at Georgia’s Environmental Protection Division, said the agency is “determining whether proposed federal rule changes would affect the public participation requirements per the state regulations.”
Some states show what is at stake
Kentucky also has stronger public participation laws for minor source permits, according to the source. Byron Gary, a senior attorney at the Kentucky Resources Council, said state agencies have made an “informal commitment” to keep their public participation rules the same even if EPA rules change.
Gary also said that commitment could change under a future administration: “Who knows [if] the next administration, whether they would actually change it.”
Texas is presented as a contrast. The source describes lower levels of engagement there, where the data center boom has driven a massive buildout of private gas plants. Many of those plants rely on minor pollution permits.
In Texas, lower enforcement levels have left some communities near data centers surprised by the scale of fossil fuel infrastructure installed close to their homes. That example shows why notice is not a procedural detail for residents. It can be the difference between seeing a project while it is still under review and learning about it after major decisions are already moving forward.
The AI buildout is the backdrop
The proposed rollback comes as data centers are facing more pushback across the US. Communities have used the permitting process to try to slow development, and the source notes that public opposition has become a bottleneck for some data center projects.
The Trump administration has moved to remove multiple federal roadblocks for data center development. An EPA spokesperson said the agency is working to make the US “the AI capital of the world.”
Companies are also spending heavily on data center construction. The source states that spending on data center construction outpaced spending on public transportation infrastructure for the first time in June.
Powell said the timing of the rule revision is probably not accidental. “I think it’s part of a package of rules that the Trump administration is pushing through to make it easier for AI data centers to be constructed,” she says.
For communities near proposed data centers, the core question is simple: who gets to know, and when? If the EPA finalizes the rule, the answer may depend more on state choices than on a uniform federal participation requirement for minor source permits.