Samsung SDI said Monday it has secured another large-scale contract to supply energy storage system (ESS) batteries in the United States, accelerating its expansion in the fast-growing global ESS market. According to the Korean battery maker, its Michigan-based subsidiary, Samsung SDI America, recently signed a 1.5 trillion won ($1 billion) deal to supply ESS batteries in phases to a U.S. energy company over four years through 2029. The company did not disclose the name of the customer under the agreement. The batteries will be produced at StarPlus Energy’s plant in Indiana, a joint venture between Samsung SDI and automaker Stellantis. Initial shipments will consist of nickel-cobalt-aluminum (NCA) batteries, with supplies later expanding to lithium iron phosphate (LFP) batteries. The latest contract highlights Samsung SDI’s technological competitiveness in both NCA and LFP battery technologies in the global market, the company said. Samsung SDI has been strengthening its presence in the U.S., where demand for ESS is rapidly increasing alongside the expansion of renewable energy and ar