Court Rejects Government's Power to Dismiss Citizen Suits in X.AI Data Center Case, Impacts Environmental Litigation
A U.S. District Court has issued two significant rulings in the National Association for the Advancement of Colored People’s (NAACP) lawsuit against X.AI Corp. regarding its data center in Southaven, Mississippi. The NAACP alleges that the MZX Colossus Gas Plant, which powers an X.AI data center supporting the Grok platform, operates in violation of the Clean Air Act due to unpermitted portable gas turbines. In an October 19, 2026 decision, the court rejected the U.S. government's motion to intervene and unilaterally dismiss the NAACP's claims, stating that the Clean Air Act does not grant the government such power. The government had argued that its right to intervene included the right to dismiss citizen suits and that allowing such suits to continue would intrude on its enforcement discretion. In a subsequent October 30, 2026 decision, the court also denied X.AI's motion to dismiss, ruling that the turbines, despite being mounted on trailers for portability, are not 'mobile sources' exempt from permitti...