Samsung SDI BESS Supply Deal Strengthens US Energy Storage Battery Chain

Samsung SDI BESS

Samsung SDI BESS supply deal activity is accelerating in the US as demand for grid-scale battery storage continues to rise. The South Korean battery manufacturer has secured a 1.5 trillion won, or about $1 billion, contract to supply BESS batteries to a US energy company over four years.

The Samsung SDI BESS supply deal will run from 2026 to 2029. The batteries will be supplied in phases, supporting the rapid buildout of US battery energy storage systems as utilities, renewable developers, and infrastructure operators seek more flexible power capacity.

The agreement also strengthens Samsung SDI’s US manufacturing strategy. The batteries will be produced at StarPlus Energy’s plant in Indiana, a joint venture between Samsung SDI and Stellantis.

Indiana Production Links Battery Storage to Domestic Manufacturing

The StarPlus Energy facility gives Samsung SDI a local production base for the US energy storage market. This matters because US customers increasingly value domestic or regionally anchored battery supply chains, especially for energy infrastructure projects.

Initial deliveries will use nickel-cobalt-aluminum batteries. This chemistry gives Samsung SDI a route to serve early BESS demand while preparing for broader chemistry diversification.

Later expansion will include lithium iron phosphate batteries. LFP batteries are becoming more important in stationary storage because cost, safety, cycle life, and scale matter more than maximum energy density in many grid applications.

LFP Expansion Signals a Wider Shift in US BESS Demand

The Samsung SDI BESS supply deal follows another major LFP agreement signed last December with an unnamed US energy infrastructure company. That earlier contract was valued at two trillion won, or about $1.33 billion.

Together, the deals show that Samsung SDI is moving more aggressively into the US battery energy storage systems market. The company is no longer positioned only around electric vehicle batteries, but also around grid storage and power infrastructure.

This shift has important materials implications. BESS growth will increase demand for lithium, iron phosphate materials, nickel, cobalt, aluminum, copper, graphite, separators, electrolytes, and power electronics. It will also intensify competition among Korean, Chinese, Japanese, and US-linked battery supply chains.

The Metalnomist Commentary

Samsung SDI’s latest contract confirms that US battery demand is shifting from EV-only growth toward a broader energy infrastructure cycle. For battery makers, chemistry flexibility and local production are becoming as important as scale itself.