Environmental advocates submitted formal comments to Louisiana regulators opposing a proposed air permit modification for Meta’s data center facility in the state. The Sierra Club contends that the tech company’s effort to maintain a minor-source designation while adding significant new pollution sources violates federal clean air standards and deprives the public of required regulatory review.
Meta initially received approval for a minor-source air permit in July 2025 to operate diesel emergency generators, a fire pump, and fuel storage tanks at the Hyperion site through a subsidiary entity. The company now seeks to add 44 fossil-fuel water boilers that would operate continuously and emit pollutants year-round. Environmental advocates argue this expansion pushes total emissions beyond the thresholds permitted under minor-source classifications, which carry less stringent requirements than major-source permits.
According to the Sierra Club’s analysis, Meta proposes to exclude emissions from the previously approved diesel generators during their operation, classifying such usage as emergency-only and therefore outside the permit’s scope. This accounting approach would allow the company to avoid the more rigorous permitting process required for major pollution sources under the Clean Air Act. Regulators have preliminarily accepted this methodology, prompting environmental groups to escalate their objections and demand that emergency generator emissions be included in cumulative calculations.
The Sierra Club specifically called for state regulators to conduct a mandatory public hearing on the permit revision and to require more comprehensive pollution monitoring and modeling. The group also recommended that Meta explore battery storage technology as a cleaner alternative to fossil-fuel-powered systems.
The dispute reflects broader national concerns about data center expansion and the use of multiple minor permits to circumvent stricter pollution controls. Environmental advocates note that facilities operating under multiple minor-source designations can obscure cumulative environmental impacts on nearby communities.
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