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- A federal judge allowed the NAACP’s Clean Air Act lawsuit against SpaceXAI to proceed, rejecting the company’s arguments over permitting requirements and the plaintiffs’ legal standing.
- The lawsuit alleges that 27 gas-fired turbines operated in Southaven, Mississippi, between August and December 2025 without required air permits.
- SpaceXAI plans to remove its temporary turbines by July 2027 while developing a permanent 1.2-gigawatt power facility with 41 turbines.
Space Exploration Technologies Corp. (NASDAQ: SPCX) has failed to dismiss a Clean Air Act lawsuit brought by the NAACP against its artificial intelligence division, SpaceXAI, over gas-fired turbines supplying electricity to AI data centers near Memphis.
A federal judge’s opinion released late Friday allows the lawsuit to proceed, rejecting the company’s arguments that its turbines were exempt from certain air permitting requirements and that the plaintiffs lacked legal standing.
The complaint, filed in April 2026, concerns 27 turbines allegedly installed and operated in Southaven, Mississippi, between August and December 2025 without the necessary air permits. The defendants include xAI and related entities now owned and operated by Elon Musk-led SpaceX, according to CNBC.
The decision comes as SpaceXAI prepares to phase out temporary gas turbines at its Southaven facility under an agreed schedule, with the remaining mobile units expected to be removed by July 2027.
Federal judge rejects SpaceXAI’s Clean Air Act defenses
The NAACP brought the lawsuit with legal representation from the Southern Environmental Law Center and Earthjustice, challenging the company’s use of combustion turbines to power its Greater Memphis-area AI infrastructure.
SpaceXAI argued that the turbines qualified as mobile equipment and were therefore exempt from certain permitting requirements under Mississippi’s state implementation plan. The company also disputed the NAACP’s standing to bring the case and challenged the constitutionality of the Clean Air Act’s citizen lawsuit provisions.
The court rejected those arguments.
“Because the plaintiffs have statutory standing under the Clean Air Act, because the combustion turbines are not ‘mobile sources’ under Mississippi’s SIP, and because the citizen suit provision does not violate Article II of the Constitution or the private nondelegation doctrine, the plaintiffs’ claims will proceed,” the judge wrote.
The ruling allows the NAACP’s claims to move forward without determining whether the alleged environmental violations occurred.
It follows another decision in the same court approximately two weeks earlier, when a judge rejected a Justice Department request to end the proceedings, according to CNBC.
SpaceXAI plans 1.2-gigawatt power facility near Memphis
SpaceXAI has maintained that its use of temporary gas turbines is part of a transition toward permanent electricity generation infrastructure for its supercomputer operations in the Greater Memphis area.
In regulatory communications, the company linked the planned removal of temporary generators to the development of a larger, 1.2-gigawatt power facility.
According to SpaceXAI, the permanent installation will operate 41 turbines and received a Clean Air Act permit in March 2026.
The company has also stated that air monitoring data show local environmental conditions continue to meet or exceed Environmental Protection Agency standards.
The planned permanent facility is substantially larger than the temporary turbine installation challenged in the NAACP lawsuit.
SpaceXAI’s schedule calls for the final temporary turbines at the Southaven location to be removed by July 2027, even as litigation over their earlier operation continues.
The dispute also concerns significant capital expenditure on electricity infrastructure. In its initial public offering filing, SpaceX previously disclosed that xAI expected to spend $2.8 bn on additional mobile gas turbines despite the ongoing emissions lawsuit.
