SES SES, formerly known as SolidEnergy Systems, used to pursue solid-state Li-Metal technology. SolidEnergy was a spin out from MIT founded in 2012 by Dr. Qichao Hu. It was incubated at A123 in its early years. In 2015, Dr Hu realized that all solid-state batteries look good on paper but have fundamental difficulties in real cell production. Then in 2018, the company changed its name to SES after restructuring, addressing its focus on hybrid approach with high-concentration solvent-in-salt liquid electrolyte, solid-state protection coating for Li-Metal anode and AI software to monitor the battery health. The hybrid approach also has a more practical mass manufacturing capability. SES