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The court rejected the company’s permitting and constitutional defenses, clearing the way for the case over 27 Mississippi gas turbines to continue. It has not decided whether the company violated the law.
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The ruling rejects SpaceXAI’s arguments that its Southaven turbines were mobile sources exempt from permits and that the NAACP could not bring a Clean Air Act citizen suit. The case now proceeds to address claims about 27 gas turbines installed in 2025, but the judge has not determined whether the companies violated the law. For AI operators, the dispute puts local air-permitting rules and community litigation around data-center power infrastructure in focus.
The turbines allegedly supplied electricity to large AI data centers in Greater Memphis and operated without an air permit.
The NAACP alleges emissions of smog-forming pollutants and particulate matter that could increase health risks and cause odors.
The Southern Environmental Law Center and Earthjustice filed the case for the NAACP in April 2026.
The NAACP can pursue its air-pollution claims against SpaceX’s AI division after a federal judge rejected the company’s attempt to end the lawsuit. The decision keeps a dispute over gas turbines powering Memphis-area AI data centers in court, but does not decide whether the company violated the Clean Air Act.
The opinion, released late Friday, October 30, came from the U.S. District Court for the Northern District of Mississippi. According to CNBC, the judge rejected both the company’s argument that its turbines were exempt from permitting requirements and its challenges to the NAACP’s ability to bring the case.
The Southern Environmental Law Center and Earthjustice filed the lawsuit on the NAACP’s behalf in April 2026. It targets gas-fired combustion turbines used to supply electricity to large AI data centers in Greater Memphis. The complaint was filed against xAI, which is now owned and operated by SpaceX under the SpaceXAI name.
The plaintiffs allege that xAI and its subsidiary MZX Tech installed and operated 27 gas turbines in Southaven, Mississippi, between August and December 2025 without an air permit. Their complaint also alleges that the companies operated the equipment without regard for the health and safety of people living nearby.
According to the lawsuit, those turbines emit smog-forming pollutants and particulate matter that can increase health risks and cause unpleasant odors. The Colossus data centers and a power plant SpaceXAI is also building in Southaven have faced community opposition for years.
In its June motion to dismiss, SpaceXAI characterized the turbines as mobile and argued that this made them exempt from permitting requirements. The judge found that the turbines were not mobile sources under Mississippi’s state implementation plan, the state air-quality rules at issue.
The company also challenged who could enforce the law. Its lawyers argued that the NAACP had no right to sue under the federal Clean Air Act and that lawsuits by community groups were unconstitutional.
The judge found that the plaintiffs had statutory standing—the right to bring this lawsuit under the Clean Air Act. The opinion also rejected the constitutional objections to the law’s citizen-suit provision, including the argument concerning delegation of power to private parties.
About two weeks earlier, the same court rejected a U.S. Department of Justice request to end the case against Musk’s company. This latest decision instead addresses SpaceXAI’s own motion and the permitting and citizen-suit defenses it raised.
SpaceX did not immediately respond to CNBC’s request for comment.
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