LG Energy Solution to start producing ESS batteries at Tennessee plant

By Shin Jia Posted : March 18, 2026, 09:59 Updated : March 18, 2026, 09:59
The plant of Ultium Cells, LG Energy Solution' joint venture with General Motors, is seen, in this file photo from June 2024. Yonhap
SEOUL, March 18 (AJP) - LG Energy Solution (LGES) will begin producing lithium iron phosphate (LFP) battery cells for energy storage systems at its plant in Spring Hill, Tennessee, the battery maker said on Wednesday.

Production will be carried out through LGES' joint venture with General Motors, Ultium Cells, with an investment of about US$70 million to convert part of its existing electric-vehicle battery line for ESS production. Mass production is scheduled to start in the second quarter of this year.

LGES said the move aims to operate production lines more efficiently as EV sales growth slows, while also protecting jobs. Ultium Cells is currently converting equipment at the plant and training workers to meet ESS production requirements, with 700 staffers who were on temporary leave in January returning.

Battery cells produced at the plant will be supplied through LGES' North American unit for ESS, Vertech. LGES said the batteries are expected to be used in projects for energy grid support systems, renewable energy–linked ESS installations, and power infrastructure for artificial intelligence–related data centers.

Park In-jae, head of Ultium Cells, said the move marks the plant's first large-scale revamp to evolve into a more diversified battery cell manufacturer. "We will upgrade the production system to meet shifting demand and become a core player and technology leader in the U.S. battery industry," he said.

With the latest makeover of its Tennessee plant, LGES now has five ESS production sites across North America.

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