xAI Adds 19 Natural Gas Turbines Amid Clean Air Act Lawsuit

Summary

xAI has installed 19 new natural gas turbines at its Colossus 2 data center campus in Southaven, Mississippi, over the past two months, bringing the total to 46 turbines and adding over 500 megawatts of generating capacity. The additions come despite an ongoing lawsuit filed by the NAACP and environmental groups alleging that xAI is violating the Clean Air Act by operating gas turbines without appropriate air permits.

Internal emails obtained through public records requests show that eight of the 19 newly installed turbines—representing more than 200 megawatts of capacity—were deployed after the lawsuit was filed in April. Regulators have said that portable turbines can operate without permits for up to one year under the Clean Air Act, and the Mississippi Department of Environmental Quality granted an air permit for 41 turbines in March. However, environmental lawyers argue that the newly added turbines are not covered by that permit.

The expansion mirrors regulatory challenges at xAI's original Colossus 1 facility in Memphis, Tennessee, which faced similar scrutiny over unpermitted gas turbine operations in a historically Black neighborhood. The additions underscore the significant power demands of AI data centers and the associated environmental and regulatory complications, particularly in communities already dealing with air quality concerns.

• xAI is expanding power infrastructure amid legal challenges and environmental opposition at multiple data center sites
• Regulatory agencies claim portable turbines have a one-year grace period before permits are required, but environmental groups dispute the legal coverage