xAI Data Center Runs Unauthorized Gas Turbines, Pollution Hits Black Communities Hardest
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Elon Musk’s artificial intelligence company xAI installed 59 natural gas turbines for its Colossus 2 data center project in Tennessee without securing federal clean air permits. A Reuters analysis found that this pollution is hitting Black communities the hardest.
Reuters’ findings based on communications between regulators and xAI representatives show:
- xAI had publicly stated it was running 27 unpermitted turbines as of January, but Reuters identified nearly double that number
- At least 57 turbines are located just across the state line in Mississippi from the Tennessee data center
- The turbines’ potential emissions far exceed the threshold requiring federal permitting and are released near predominantly Black communities
- Communities in Mississippi and Tennessee are already struggling with disproportionately high rates of lung disease
A Reuters analysis based on government data calculated that 30 turbines alone could emit nearly 2,500 short tons of nitrogen oxide, 4,000 short tons of carbon monoxide, and 22 short tons of formaldehyde annually (assuming continuous operation at 80% of capacity).
These emissions:
- Nitrogen oxides: Contribute to smog and respiratory inflammation
- Carbon monoxide: Deprives the body of oxygen
- Formaldehyde: Classified as a carcinogen
xAI’s turbines represent just a fraction of off-grid power plants proposed or under construction for data centers nationwide. Local authorities often fast-track approvals in weeks or months, rather than the years of environmental studies and public hearings typically required.
Civil rights groups including the NAACP and the Southern Environmental Law Center sued xAI in April to halt its operations, arguing that the turbines produce emissions subject to the federal Clean Air Act. The lawsuit contends that the turbines are polluting homes, schools, and churches in historically Black communities.
Mississippi regulators issued a permit for permanent turbines for Colossus 2 in March, allowing construction of 41 gas-fired turbines. The approval came just three weeks after the state’s only public hearing on the project.
xAI and Mississippi environmental regulators argued in court filings that the turbines are exempt because they are ‘mobile’ and intended to operate onsite for less than a year.
However, the U.S. Environmental Protection Agency (EPA) stated in January 2026 that even temporary turbines exceeding emissions thresholds must obtain permits.
The U.S. Justice Department intervened in the lawsuit in June, arguing that restricting the turbines could threaten national security interests because xAI’s systems support U.S. military operations. xAI’s systems support U.S. military operations, including those involving Iran.
The lawsuit could help define how environmental laws apply to the fast-growing AI sector, where companies are scrambling to bring power supplies online to support energy-intensive computing.