Judge rules EPA cannot dismiss NAACP pollution suit against SpaceXAI's Memphis data center

A federal judge has rejected the Trump administration's attempt to end a pollution lawsuit against Elon Musk's SpaceXAI. US District Judge Debra Brown ruled Tuesday that "nothing" in the Clean Air Act allows the EPA Administrator to "unilaterally dismiss a citizen suit." The case over the Colossus data center in Memphis, Tennessee, will therefore continue.

The NAACP sued after unpermitted gas turbines were found powering Colossus. It wants an injunction requiring xAI, now known as SpaceXAI following a merger, to use the best available pollution control technology, plus penalties of up to $124,426 per day per violation. The group argues the turbines risk raising pollution in nearby neighborhoods that are predominantly Black.

The administration intervened, arguing the EPA could dismiss such suits whenever the president decides against enforcement, and that allowing them would not serve the public interest given the push to bring data centers online quickly. Brown called this an "extraordinary position" with no grounding in federal law. She said the Act's one relevant exception applies when the EPA is itself suing or acting to require compliance, which is not the case here because the administration has no intention of suing SpaceXAI.

Brown reasoned that the Clean Air Act also lets citizens sue the EPA Administrator for failing to enforce it. "Evidently, Congress contemplated that citizen suits may not always align with the EPA's judgment," she wrote. She also noted that Congress considered, and did not adopt, a 1990 amendment that would have let the EPA take over citizen suits.

Brown's order suggested the administration's reading would have given it power to block any data center pollution suit, and to defend other interests against Clean Air Act claims too. Earthjustice, which supports the NAACP, monitors data center disputes nationwide. Ars Technica notes the Colossus case was the first to expose the industry's use of unpermitted gas turbines, so the ruling may matter beyond Memphis.

The stakes are growing. A Houston Advanced Research Center report says that if all planned Texas data centers ran on the anticipated grid mix, power-sector soot would more than triple and NOx would rise 136 percent in five years. The outcome depends heavily on whether developers use onsite renewables or gas engines.

The case returns to the merits, where the NAACP must still show the turbines violated the Clean Air Act. The coverage does not say whether the administration will appeal the ruling.

Earthjustice's Laura Thoms said the group will "continue the fight to hold xAI accountable." Other data center disputes involving unpermitted turbines may test similar arguments.