SES, formerly known as SolidEnergy, is the world leader in development and manufacturing of high-performance Li-Metal batteries for automotive and transportation applications.

SES offers the most complete solution in the highly competitive EV battery market, marrying strong technology and an innovative mix of materials with a unique manufacturing approach.

SES was founded in 2012 by Qichao Hu. The company is headquartered in Woburn, Massachusetts, with offices in Jiading, Shanghai, China and Seoul, South Korea.


SES designs and produces Li-Metal battery materials, cells, modules, recycling processes, and AI algorithms that optimize battery safety and charging.


SES has the strong capabilities in material, cell, module, AI-powered safety algorithm and recycling. The Li-Metal cells deliver the performance benefits sought by automakers and consumers, including a faster charge and longer range at a lower price.


SES is backed by General Motors, SK, Temasek, Tianqi Lithium, Applied Materials, Vertex and Shanghai Auto. The company completed a $139M Series D round on Apr 19, 2021. This brings SES' total funding to $225.1M to date.



  • Year founded: 2012
  • Funding Info: $225.1M over 5 Rounds (Latest Funding Type: Series D)
  • Yearly Revenue: NA
  • Employee Size: 51-200
  • Business Valuation: NA
  • City/Town: Woburn
  • State: Massachusetts
  • Country: United States
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