LG Energy Solution-Honda Joint Venture Produces ESS Battery Cells in U.S.

L-H Battery Company, the joint venture between LG Energy Solution and Honda, has begun mass production of lithium-ion energy storage system (ESS) battery cells at its plant in Jeffersonville, Ohio.

The facility was announced in 2022 as a roughly $3.5 billion plant for Honda EV batteries, but the partners pivoted capacity toward ESS cells as demand for grid storage surged, driven in part by the US AI data-center construction boom. The cells will supply grid-scale, commercial and industrial, and residential storage systems through Vertech, LG Energy Solution's North American ESS integration business.

The shift gives both companies exposure to a storage market moving toward compact, high-capacity products, and adds domestically manufactured supply at a moment when US-made cells carry tariff and incentive advantages. Watch the pace of the capacity ramp, customer wins announced through Vertech, and whether more EV battery lines get converted to storage production.