
Federal judge keeps NAACP's Clean Air suit against Musk's xAI alive
Northern District of Mississippi rejects the company's second attempt to end the Southaven turbine case in two weeks
SOUTHAVEN, Miss. — U.S. District Judge Debra M. Brown, sitting in the Northern District of Mississippi, denied a motion by X.AI Corp. and its subsidiary MZX Tech to dismiss the NAACP's Clean Air Act suit. The suit concerns the gas-turbine plant in Southaven that powers xAI's Colossus 2 data center across the state line in Memphis. In an order dated Oct. 30, Brown rejected three defense arguments. She found the plaintiffs have statutory standing, that the turbines are not exempt 'mobile sources' under Mississippi's state implementation plan, and that the Act's citizen-suit provision does not violate Article II. On Oct. 19 she had also refused a Justice Department request to dismiss the case, though she let the government intervene. The ruling does not decide whether any violation occurred. The NAACP's separate request for a preliminary injunction is still pending. The plaintiffs seek civil penalties of up to $124,426 per day for each violation.
Why it mattersThe ruling tests whether temporary gas generators at AI data centers can avoid air permits, and whether private plaintiffs can keep such cases going even when federal officials want them ended.


