Ultium Cells Spring Hill is a battery cell plant in Maury County, Tennessee, operated by the General Motors and LG Energy Solution joint venture. Production of LFP cells for energy storage began in June 2026, and a lithium manganese rich upgrade was announced in September 2026.

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Overview

The plant produces LFP cells for energy storage systems, which began in June 2026. Ultium announced an upgrade to produce lithium manganese rich cells, with modifications to be completed in 2028. The combined investment in the two programs will reach $1B by 2030.

Profile

Electricity and grid: Columbia Power & Water Systems and the Tennessee Valley Authority prepared service to the plant at the North Columbia Substation. TVA planned a 1.1-mile transmission line to provide power to the project site.

Ownership and capacity: Ultium Cells is a joint venture between General Motors and LG Energy Solution. The plant has more than 45 GWh of annual battery production capacity.