xAI installs 19 more gas turbines at Colossus 2, taking the Southaven site to 46 units

In March 2026 xAI secured permission to install 41 natural-gas turbines at its second data centre campus, on Tulane Road in Southaven, Mississippi, to power the Colossus 2 cluster. Within two months, records reviewed by the Southern Environmental Law Center showed 19 further turbines had arrived, bringing the site to 46 gas units and apparently beyond the permitted count.

Reports put the 19 new turbines alone at more than 500 MW of generating capacity. Elon Musk has said the cluster — now part of SpaceXAI — will eventually have access to 2 GW of compute power, with gas turbines "key" to supplying it.

The pattern mirrors Colossus 1 in Memphis, where aerial imagery counted 35 turbines against a permit for 15 in 2025, prompting a Clean Air Act notice of intent to sue and permit appeals by the NAACP and local groups.

Why it matters for the index: on-site fossil generation for primary power is the single largest deduction in the carbon pillar, and exceeding permits is the single largest deduction in conduct. xAI now carries both at two sites.