Judge rejects xAI's bid to dismiss NAACP pollution lawsuit

A federal judge has denied xAI’s bid to dismiss a lawsuit accusing the SpaceX-owned company of running its Colossus data center outside Memphis without the air permits the Clean Air Act requires. The suit, filed by the Southern Environmental Law Center on behalf of the NAACP, says xAI “installed and operated at least 35 combustion turbines and other sources of air pollution at the Colossus site without ever obtaining the necessary preconstruction or operating air permits.”

xAI argued the turbines count as mobile sources exempt from permitting and that the plaintiffs lacked standing to sue. Judge Debra M. Brown rejected both: she found that, under Mississippi’s state implementation plan, the turbines aren’t mobile sources, and that plaintiffs suing under the Clean Air Act do have grounds to bring the case. She also ruled that letting such citizen suits proceed doesn’t hand private litigants the federal government’s executive power, since they sue for their own harm, not the government’s.

It’s the second such setback for xAI: a similar effort by the Department of Justice to get the case tossed was denied earlier this month. Abre’ Connor, the NAACP’s environmental and climate justice director, called the ruling a win for the effort to hold xAI accountable and said the group’s position remains that xAI cannot run gas turbines without the required permits.

The case advances as sentiment toward data centers sours more broadly: New York recently passed a moratorium on new data centers, other state and local governments are weighing similar steps, and Amazon and Microsoft have separately pledged to drop NDAs from their government dealings.

Why it matters

The ruling keeps xAI’s environmental exposure in court just as political and regulatory patience with power-hungry data centers is wearing thin, making permitting fights a likely recurring cost of building AI infrastructure in the US.