DOJ Intervenes in xAI Lawsuit, Claims Unpermitted Gas Turbines Essential to National Security

The Department of Justice intervened Monday in a lawsuit against Elon Musk's xAI, arguing that the company's use of unpermitted natural gas turbines at its data centers is vital to American national, economic, and energy security. In a court filing, the DOJ stated that halting the turbines would disrupt artificial-intelligence innovation supporting the Department of Defense's military operations, including recent strikes in Iran. The agency cited Grok, xAI's AI model, as one of only four models supporting mission-critical operations across classified military networks.

The NAACP filed the original lawsuit in April, alleging that xAI violates the Clean Air Act by operating 27 unpermitted turbines at its Colossus 2 data center in Southaven, Mississippi, near Memphis. The organization contends that the turbines endanger public health in a region already burdened by some of the nation's highest asthma rates. However, emails obtained by the Southern Environmental Law Center reveal that the number of unpermitted turbines at the site has more than doubled to 57 since the lawsuit was filed, with many added weeks after the initial complaint. This expansion corresponds to a 111 percent increase in nitrogen oxide emissions, an 83 percent increase in PM2.5 emissions, and an 88 percent increase in formaldehyde emissions.

The dispute centers on whether trailer-mounted turbines qualify as stationary equipment subject to air pollution regulations. xAI claims the mobile turbines are exempt from Mississippi regulations for one year, while federal law and environmental advocates argue that trailer-mounted units operating at fixed locations should be treated as stationary sources requiring permits. The NAACP asserts that the polluters should not benefit at the expense of predominantly Black communities, emphasizing that citizen suits remain essential for holding companies accountable.

Defense Department officials have submitted declarations detailing the military's reliance on xAI's infrastructure. Cameron Stanley, the chief digital and artificial intelligence officer at the Department of Defense, stated that forcing xAI to shut down the turbines "directly threatens ongoing national security interests." The DOJ, along with xAI and Mississippi state officials, has asked the court to dismiss the NAACP's lawsuit. Meanwhile, SpaceX's recent IPO filing revealed plans to purchase $2.8 billion worth of additional gas turbines over the next three years, with at least $2 billion designated for mobile units, suggesting the company anticipates expanded operations.