xAI Colossus Supercomputer Campus (Memphis)
CGreater Memphis · US · xAI
Environment
WRI Aqueduct 4.0, 2023, 2023
EPA eGrid 2022, SRTS subregion, 2022
NOAA Palmer Drought Severity Index, 2023
Shelby County, Tennessee permit records
Facility
Approximately 150 MW of grid power from MLGW plus on-site natural gas turbines. xAI purchased a third Memphis building in January 2026, expanding the Colossus cluster toward a stated 2 GW total across the Memphis area.
Evidence (3 sources)
Confirms Colossus launch, Memphis location, 100,000 H100 GPU scale, and TVA power source.
xAI launched the Colossus supercomputer at 4951 E Shelby Drive, Memphis, Tennessee. The initial system comprises 100,000 Nvidia H100 GPUs, making it the world's largest AI training cluster at launch. Power sourced from TVA via Memphis Light, Gas and Water.
Documents community concerns about diesel generator emissions and noise — diesel generators confirmed in Shelby County permit filings.
Memphis residents near the xAI Colossus facility on Shelby Drive documented concerns about diesel generator exhaust, noise, and air quality impacts during power testing phases. Shelby County permit records confirm the installation of over 35 industrial diesel generators at the site.
Clean Air Act lawsuit over unpermitted gas turbines; community opposition
Community
Memphis residents documented concerns about gas turbine exhaust, noise during testing, and air quality. In April 2026 the NAACP sued xAI alleging Clean Air Act violations from unpermitted natural gas turbines. Shelby County records and national reporting (Time, CNBC, 2025-2026) describe sustained community opposition in South Memphis.
Community flags document events recorded in public sources. They do not imply causal attribution or ongoing harm.