The Southern Environmental Law Center sent a letter this week to the Health Department in Shelby County, where Memphis is located, and to a regional office of the Environmental Protection Agency on behalf of several local groups, asking regulators to investigate xAI for its unpermitted use of the turbines and the pollution they create.

The letter notes that xAI "has installed at least 18 gas combustion turbines over the last several months (with more potentially on the way)."