Samsung SDI announced that its U.S. subsidiary, Samsung SDI America, has secured a 1.5 trillion KRW (approximately $1 billion USD) contract to supply prismatic energy storage system (ESS) batteries to a U.S. energy company over a four-year period from 2026 through 2029. Production will take place at the StarPlus Energy facility in Indiana—a joint venture between Samsung SDI and automaker Stellantis. Initial shipments will utilize nickel-cobalt-aluminum (NCA) battery cells, followed by lithium iron phosphate (LFP) cells as project requirements evolve.
This agreement builds on Samsung SDI’s expanding footprint in North America’s ESS market, where demand is rising alongside the integration of renewable energy sources and the growth of artificial intelligence applications in data centers. Last December, the company signed a separate 2 trillion KRW deal to supply LFP ESS cells to a major U.S. energy infrastructure provider. Together, these contracts underline the market’s recognition of Samsung SDI’s technical capabilities and rigorous safety standards, which have been validated by multiple high-profile customers.
Samsung SDI’s prismatic PrismStack technology is noted for its structural durability, enhanced fire-safety features, and long-term reliability compared with pouch-type cell formats. Industry analysts also observe that these award wins may bolster the company’s position in government-led tenders for ESS battery supplies to state-run power utilities in South Korea. As the only major non-Chinese supplier of prismatic ESS batteries in North America, Samsung SDI continues to engage with additional global customers and expects to finalize further agreements in the coming months.
Company representatives commented that the series of contracts reflects their ongoing commitment to meeting diverse performance specifications for a broad range of energy storage applications. Samsung SDI plans to leverage these partnerships to accelerate its global ESS business expansion and support the energy transition.
Source: Samsung SDI News

