Samsung SDI books 60 GWh of storage battery orders as Q3 revenue jumps 53%
Victoria Shinder2 min readSamsung SDI's third quarter shows how far grid storage has moved to the centre of the battery business. The South Korean manufacturer reported revenue of KRW 4.69 trillion (about $3.5 billion) for July to September, up 52.6% from KRW 3.05 trillion a year earlier and 20.9% above the second quarter, Energy-Storage.news reported on 30 October.
Operating profit was KRW 407.8 billion, the second profitable quarter in a row after a turnaround plan launched in the third quarter of 2025 that put more weight on energy storage systems, especially in the US. The battery segment alone brought in KRW 4.41 trillion of revenue, up 55.3%, and KRW 361.9 billion of operating profit; the company attributed the growth to storage and battery backup units, part of which it links to AI data centres.
Samsung SDI said it had received 60 GWh of storage battery orders in the first nine months of the year. To serve that demand in the US it is shifting production to lithium iron phosphate, the chemistry now used in most grid-scale storage. The company said it will make LFP cells at its SynergyCells plant in Indiana, formerly a joint venture with General Motors and wholly owned by Samsung SDI since August, and mass production of large prismatic LFP cells has begun at StarPlus Energy, its Indiana joint venture with Stellantis. In the second quarter it had put its US LFP capacity at 30 GWh a year.
Days before the results it announced a 1 GWh supply deal with the independent power producer Alpha Omega Power for its US-made Samsung Battery Box 1.7 system. The company expects the storage market to keep its momentum in the fourth quarter and plans further conversions of EV cell lines to storage.
What it means
Korean cell makers are using storage to fill factories that were built for electric cars the US market is buying more slowly. For US developers the point is supply that can count toward domestic-content rules; for the grid, it is one more large manufacturer competing on LFP cells, the segment Chinese makers have dominated.