TLDRs;
- Samsung SDI secures $1B U.S. ESS battery contract, aiming to supply prismatic cells through 2029.
- Initial deliveries will use nickel-cobalt-aluminum batteries, later switching to lithium iron phosphate cells.
- Indiana-based StarPlus Energy JV drives U.S. expansion amid growing energy storage demand.
- Inflation Reduction Act incentives and domestic supply chains support Samsung’s North American strategy.
Samsung SDI, the South Korean battery maker, reported a slight dip in its stock, OL2T.L, despite announcing a major $1 billion contract to supply prismatic batteries for energy storage systems (ESS) in the United States. The agreement, valued at approximately 1.5 trillion won, will see deliveries begin this year and continue through 2029, signaling Samsung’s strategic push into the rapidly growing North American energy storage market.
$1B Contract Marks U.S. Expansion
Under the deal, Samsung SDI will initially provide nickel-cobalt-aluminum (NCA) batteries and subsequently lithium iron phosphate (LFP) cells. The batteries will be produced at StarPlus Energy, the joint venture between Samsung SDI and Stellantis, at an Indiana manufacturing plant.
The partnership leverages Stellantis’ expertise in EV battery production, creating a pipeline that will support both electric vehicles and stationary energy storage applications.
StarPlus Energy Driving Production
StarPlus Energy, based in Indiana, is central to Samsung’s U.S. strategy. The facility represents a portion of a broader $5.7 billion investment and has received a $7.54 billion federal loan aimed at supporting EV battery production.
Several existing EV battery lines are being converted to produce ESS batteries, reflecting a market-wide shift from automotive applications toward grid-scale energy storage. The U.S. facility positions Samsung SDI as the only non-Chinese supplier of prismatic ESS batteries in North America, an important differentiator in a region seeking to diversify supply chains.
Policy Support and Incentives
U.S. government policy is playing a significant role in driving this expansion. The Inflation Reduction Act offers generous tax incentives for domestically produced batteries, including $35 per kilowatt-hour (kWh) for cells and $10 per kWh for modules.
Analysts from Benchmark Mineral Intelligence note that planned U.S. battery capacity has increased by roughly two-thirds since the law’s passage. Samsung’s deal and plant expansion align closely with these incentives, allowing the company to position itself as a credible alternative to Chinese suppliers.
Domestic Supply Chains and Energy Demand
Beyond incentives, the deal reflects broader trends in domestic supply chain development. Additional suppliers, such as Hanjung America, are constructing supporting facilities in Indiana to provide cooling and fire-suppression systems for battery production.
The emphasis on U.S.-based production addresses both policy pressures and rising ESS demand, which is being driven by renewable energy growth and the increasing energy requirements of artificial intelligence infrastructure.
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.https://t.co/IB7ipvC2e9
— The Korea Times (@koreatimescokr) March 16, 2026
Despite these strategic moves, Samsung’s stock OL2T.L slipped slightly, reflecting cautious investor sentiment over global battery market competition and the time required for these investments to translate into earnings. Market watchers note that while the contract demonstrates long-term growth potential, near-term profitability for large-scale ESS projects remains subject to fluctuating energy markets and production ramp-up timelines.
Samsung SDI’s $1 billion deal highlights a pivotal moment in the evolution of the energy storage industry. By combining U.S. manufacturing presence, joint venture expertise, and policy incentives, the company is positioning itself as a key player in North America’s move toward cleaner, more reliable energy solutions. While the stock reaction was muted, industry experts believe the agreement strengthens Samsung’s long-term strategic positioning in the ESS market.
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