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xAI deploys 720 Tesla Megapacks at US’s largest grid-connected battery system

Verifying
  • xAI installed 720 Tesla Megapacks at its Colossus 2 data center in Tennessee.
  • 2.8 GWh is the system’s estimated storage capacity, with projections reaching 3.3 GWh.
  • SpaceX acquired xAI in February 2026, while TVA approved Colossus 2’s grid connection in August 2026.
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