The Southaven turbines lawsuit against Elon Musk’s artificial intelligence company is moving ahead after a federal judge on Friday, Oct. 30, denied xAI’s motion to dismiss the NAACP’s Clean Air Act case over the gas-fired power plant that supplies its Colossus 2 data center in Southaven.
The ruling from the U.S. District Court for the Northern District of Mississippi comes less than two weeks after the same court refused a U.S. Department of Justice request to end the case. It does not settle whether the company broke the law, but it rejects two of the company’s main legal defenses and keeps the case on track.
What the court decided in the Southaven turbines lawsuit
According to a joint announcement from the NAACP and its attorneys at the Southern Environmental Law Center and Earthjustice, the court rejected two arguments xAI made in its motion:
Citizen suits are constitutional. xAI argued that Clean Air Act citizen suits, which let private groups sue polluters, were unconstitutional. The court disagreed, finding that citizen-suit plaintiffs “sue on their own behalf, in their own name,” and are not exercising the federal government’s executive power.
The plant is not a “mobile source.” The company argued its turbines, described as temporary, were exempt from Clean Air Act permitting. The court held that because the plant is not a mobile source under federal regulations, it “was not (and is not) exempted from permitting requirements.”
That second finding is notable locally. The Mississippi Department of Environmental Quality (MDEQ) had told the company early on that the turbines were temporary and portable and did not need air permits. The Daily Memphian reported that the federal judge’s ruling disagreed with the state regulator’s view.
Reaction from both sides of the case
Abre’ Conner, the NAACP’s director of environmental and climate justice, called the decision “another important victory” and said the group’s position “has been clear: xAI cannot operate gas turbines without the required permits.”
Kym Meyer, litigation director for the Southern Environmental Law Center, said the ruling matters for “communities across the nation, but especially for those in South Memphis and North Mississippi.” Earthjustice enforcement director Laura Thoms said the group was glad the judge would move the case forward.
The company, now known as SpaceXAI after becoming part of SpaceX, was not quoted in the announcement, and its response to the ruling was not immediately available. The NAACP’s request for a preliminary injunction, which asks the court to stop the turbines from running until they are permitted, is still pending.
How the Southaven case got here
The NAACP sued in April, saying the company ran dozens of methane gas turbines at its Southaven power plant without Clean Air Act permits. The group asked for a temporary shutdown in May. MDEQ issued a state permit in March for permanent turbines at the site, and the company has since said it plans to phase out the temporary units.
The legal fight is one of several facing the company in DeSoto County:
On Oct. 19, the court denied the Justice Department’s bid to dismiss the NAACP case, allowing the federal government to join only as an intervenor.
MDEQ has issued an enforcement notice with about $6.1 million in potential penalties across three Southaven-area sites.
Neighbors have raised noise and pollution complaints, and the company has bought several nearby homes.
The plaintiffs say the turbines can emit thousands of tons of nitrogen oxides each year, along with fine particulate matter and formaldehyde. Those figures come from the plaintiffs and have not been decided by the court.
DeSoto County News will follow the case as the court considers the injunction request.
