solid-state-battery
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Blue Current, Inc.
Blue Current is a Hayward, California solid-state battery developer building what it calls a 'silicon-first,' fully dry battery platform. Its Silicon Elastic Composite chemistry ties glass-ceramic electrolyte particles to silicon anode particles with compliant polymers, constraining silicon swelling so high-silicon cells can cycle stably at low pressure without flammable liquids or PFAS. Positioned as a safety-focused, B2B licensing and pilot-manufacturing company, Blue Current targets electric mobility, grid-scale storage, and consumer devices, and closed an $80M+ Series D extension led by Amazon in December 2025.
Enpower Greentech Inc.
Enpower Greentech is a battery maker building the next generation of lithium-metal and solid-state cells. Founded in 2012 by two post-docs from Nobel laureate John Goodenough's lab, the company designs semi-solid, quasi-solid, and all-solid-state batteries with energy densities pushing past 500 Wh/kg. Its cells power industrial drones, eVTOL aircraft, high-altitude pseudo-satellites, and electric vehicles, and it says it has shipped more than 3 million cells across its SWIFT, FLEET, and KOSMOS platforms from facilities in the US, China, Japan, and Germany.