In brief
Samsung SDI Co. announced a record net profit of 342.2 billion won for September‑ending Q3, up from 5.7 billion won a year earlier. The rise was largely driven by expanded orders for energy storage system (ESS) batteries, particularly prismatic lithium iron phosphate units. The company projects the rebound will continue into Q4, bolstered by a strengthening U.S. supply chain and growing ESS demand.
SAMSUNG SDI Co., Seoul – In a regulatory filing on Thursday, Samsung SDI disclosed that its third‑quarter net profit surged to 342.2 billion won (US$255.3 million) from 5.7 billion won a year earlier, a leap powered largely by increased orders for energy storage system (ESS) batteries.
ESS refers to large‑scale battery units that store electrical energy for later use, a technology that underpins utilities, renewable power plants and electric‑vehicle charging infrastructure. Samsung SDI’s core contribution lies in prismatic lithium iron phosphate (LFP) cells, a type of battery where the active material is shaped into rectangular prisms, offering high safety, long cycle life and a cost advantage over traditional cylindrical formats.
The company’s operating profit turned profitable in the third quarter, reaching 407.8 billion won after a loss of 591.3 billion won a year earlier. Sales climbed 52.6 percent to 4.68 trillion won from 3.07 trillion won, a trend that continued over the first nine months of the year where revenue rose 27 percent to 12.2 trillion won.
SURMOTT, a Samsung SDI official, said, “Long‑term contracts to supply ESS solutions to U.S. customers were among the factors supporting our quarterly results.” The statement underscores a move toward the U.S. market where demand for energy storage is projected to grow amid decarbonization policies.
Over the nine‑month period ending September, Samsung SDI reported a net income of 869.9 billion won, rising from a net loss of 377 billion won a year earlier. Its operating profit also swung to 456 billion won from an operating loss of 1.42 trillion won. These figures suggest a robust, multi‑quarter turnaround linked strongly to the ESS segment.
From a supply‑chain perspective, the company plans to strengthen its local U.S. logistics, indicating a strategic pivot to secure critical raw materials and manufacturing capacity closer to end‑customers. The firm also intends to scale up mass production of prismatic LFP batteries specifically for ESS applications, a move that could cement its position in the emerging grid‑storage market.
Implications for Market Dynamics
The leap in profitability points to a broader shift in the battery industry, whereby companies that can secure long‑term ESS contracts stand to benefit from the global electrification wave. ESS markets are expected to reach multi‑year growth rates in the 20‑30 percent range as utilities invest in flexible resources to accommodate intermittent renewables.
Competing battery makers, such as LG Energy Solution and CATL, have already announced expansions in their LFP and solid‑state portfolios. Samsung SDI’s aggressive growth in the ESS arm positions it to compete more directly for large‑scale storage customers, potentially drawing investment away from smaller, specialized firms.
Given the global push toward carbon neutrality, countries with robust renewable targets are increasingly looking to ESS as a balancing mechanism. Singapore, for instance, has outlined a strategic plan to deploy 1.6 GW of ESS by 2030, while the European Union is targeting 30 GW of storage capacity by 2030 in its “Fit for 55” strategy.
In the U.S., the Inflation Reduction Act’s tax incentives for ESS purchases could accelerate demand. Samsung SDI’s signed U.S. contracts align directly with this policy environment, which may predict continued revenue growth.
Samsung SDI’s filings also hinted that the earnings rebound would extend into the fourth quarter, as additional orders accrue. The company’s management remains cautiously optimistic, citing the consistent rise in orders for both ESS and electric‑vehicle batteries as a positive long‑term indicator.
By focusing on prismatic LFP chemistry, which offers better safety and lower cost compared to nickel‑cobalt‑based cells, Samsung SDI may capture a segment of the market that prioritizes life span and safety over energy density. Such design choices could prove invaluable in grid applications where thermal stability and lifespan outweigh the need for high energy density.
Overall, the data from Samsung SDI’s Q3 reports provide a clear signal that the ESS market is gaining traction and will likely continue to influence battery manufacturers’ profitability trends in the forthcoming quarters.




