Justice Department moves to dismiss NAACP Clean Air Act suit against xAI gas turbines
The U.S. Justice Department asked a Mississippi federal judge to throw out a lawsuit filed by the NAACP alleging that Elon Musk's xAI operates unpermitted gas turbines, citing national security and economic concerns.
The Justice Department filed a brief in U.S. District Court for the Northern District of Mississippi urging the court to dismiss a Clean Air Act citizen-suit brought by the NAACP against xAI Corp. and its subsidiary MZX Tech. The lawsuit, filed in April, claims the companies are operating dozens of gas turbines at a data center in Southaven, Mississippi, without the required permits, raising health and noise concerns for nearby residents.
According to the filing, the Mississippi Department of Environmental Quality has classified the temporary, trailer-mounted turbines as mobile sources that do not require permits, and state officials have approved permits for permanent turbines. The department’s letter said the turbines are essential for powering the “Grok” artificial-intelligence system, which the filing argues supports U.S. military operations.
“The lawsuit threatens artificial-intelligence innovation, plus the energy needed to power it,” the Justice Department wrote, adding that shutting down the turbines could disrupt state economic interests and the balance of federal-state cooperation under the Clean Air Act.
The NAACP’s complaint seeks a permanent injunction, civil penalties of up to $124,426 per day, and reimbursement of legal costs, arguing that the turbines emit nitrogen oxides at levels far above statutory limits and pose health risks to the predominantly Black community surrounding the plant.
The Southern Environmental Law Center, representing the NAACP, criticized the government’s position, saying the Justice Department “does not dispute that xAI is pumping out unlawful and harmful pollution” but argues that national-security considerations outweigh compliance with environmental law. The organization warned that limiting citizen suits could undermine community enforcement of environmental regulations.
The case highlights a legal dispute over whether citizen-suit provisions of the Clean Air Act can proceed when state agencies deem permits unnecessary, and whether the federal government can intervene to block such suits.
