here's something more local and what i would expect. However, it's murky [link at the bottom]
"Mississippi officials told xAI it could run the generators without an air permit because they were deemed “temporary” and “mobile” units.". Makes sense because as far as i can tell they were on trailers.
but then there's this:
"But lawyers at the Southern Environmental Law Center, representing the NAACP in the federal lawsuit, have long maintained that such a loophole doesn’t exist, and that running such turbines without a permit violates the federal Clean Air Act.
“Mobile, temporary, portable, whatever you want to call them, turbines need air permits,” Patrick Anderson, a center attorney, told Mississippi Today."
"Mississippi officials told xAI it could run the generators without an air permit because they were deemed “temporary” and “mobile” units.". Makes sense because as far as i can tell they were on trailers.
but then there's this: "But lawyers at the Southern Environmental Law Center, representing the NAACP in the federal lawsuit, have long maintained that such a loophole doesn’t exist, and that running such turbines without a permit violates the federal Clean Air Act.
“Mobile, temporary, portable, whatever you want to call them, turbines need air permits,” Patrick Anderson, a center attorney, told Mississippi Today."
as per typical, it's not clear who's right
https://mississippitoday.org/2026/04/15/data-center-turbines...