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Tesla begins production of next-generation Megapack 3, targets 50 GWh-a-year ESS output

Tesla has begun full-scale production of its next-generation grid energy storage system, Megapack 3, at a newly built Megafactory in Brookshire, Texas. The plant is designed for 50 GWh of annual output and is expected to also produce the Megablock platform. Megapack 3 raises storage capacity to about 5 MWh per unit, improves energy density and updates thermal management. Tesla cited rising demand but said supply-chain risks remain.