SpaceXAI data centre may have led to Mississippi air pollution spike — SkimNews
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- MIT researcher Kevin Gauld and colleagues used NASA's TEMPO satellite to link a 'strong increase' in NOx concentrations near Colossus 2 to SpaceXAI's temporary turbines, finding average emissions of roughly 730 kg/hour from February–August 2026 and a peak of 1,180 kg/hour in August 2026.
- SpaceXAI deployed 27 turbines in December 2025 and ramped to 69 by August 2026, most without catalytic converters; Peter Zoogman of Minerva University, a TEMPO developer, estimated each turbine's annual NOx output matches roughly 50,000 cars.
- Independent reviewers called the pollution significant — University of Leeds' Martyn Chipperfield compared the values to central London, and UC Berkeley's Ronald Cohen called the science 'solid' and pointed to 'a huge number of uncontrolled generators' lacking emissions controls.
- SpaceXAI pledged in July 2026 to remove all 69 temporary turbines by July 2027 and replace them with 41 permanent gas turbines fitted with pollution controls, but the study estimates current emissions are about 16 times higher than the post-replacement rate.
- SpaceXAI and Mississippi's Department of Environmental Quality disputed the findings: SpaceXAI cited a court submission from a third-party expert claiming local monitoring stations showed no notable pollution increase, while MDEQ declined to comment on pending litigation.
- The findings land amid a broader gas-power surge for AI data centres — US gas-fired capacity under development jumped 50% in the first half of 2026, and nearly half of new data-centre gas proposals rely on less-efficient turbines rather than combined-cycle plants.
Why it matters: For communities near the Mississippi–Tennessee border, the ~16-fold gap between current emissions and what SpaceXAI's planned permanent turbines would emit means roughly another year of central-London-comparable NOx exposure before the July 2027 swap. Nationally, the 50% surge in US gas-fired development for AI in H1 2026 suggests the regulatory pattern that let uncontrolled turbines get deployed fast is about to repeat at scale.
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