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clean-technology

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Ampaire is a Long Beach, California electric aviation company that develops hybrid-electric propulsion systems for aircraft. Its AmpDrive powertrain retrofits and powers regional aircraft, and the company reports more than 30,000 flight miles with a stated goal of cutting fuel consumption, maintenance costs, and noise.

  • Updated Aug 3, 2026

Imara Corporation was a lithium-ion battery technology startup founded in 2006 in Menlo Park, California, that grew out of research at SRI International. It designed and manufactured high-power lithium-ion battery cells and packs based on patented cathode materials science, targeting power tools, outdoor power equipment, hybrid electric vehicles…

  • Updated Aug 4, 2026

Hydro Wind Energy develops offshore renewable energy infrastructure at the convergence of dispatchable clean power, grid-scale energy storage, and freshwater production. Its OceanHydro Omni deep-sea offshore wind platform converts wind into mechanical lift with built-in storage; SubSea RO Wind couples wind energy directly to subsea reverse-osmosis…

  • Updated Aug 4, 2026

Alta Resource Technologies is a Colorado-based deep-tech company reinventing how critical minerals are sourced. It uses advanced biochemistry — customizable, engineered proteins licensed from Lawrence Livermore National Laboratory and co-developed with researchers at Pennsylvania State University — to selectively separate high-purity rare earth…

  • Updated Aug 3, 2026

Solactron, Inc. is a Silicon Valley solar technology company developing high-performance, monolithically integrated thin-film solar modules on glass substrates. Its proprietary "Thin Film 2.0" process uses a tunable compound chemistry targeting greater than 34% efficiency by capturing over 95% of the solar spectrum, aiming for the highest…

  • Updated Aug 4, 2026

24M Technologies is a battery technology company founded in 2010 out of MIT laboratories and headquartered in Cambridge, Massachusetts. Rather than manufacturing cells at scale itself, 24M licenses its battery materials, cell architecture and SemiSolid manufacturing platform to energy-storage system integrators, EV battery manufacturers and OEMs…

  • Updated Aug 3, 2026

Electroflow Technologies is a United States deep-tech company (founded 2023, headquartered in San Bruno, California) developing an electrochemical direct lithium extraction (DLE) process that pulls lithium from dilute North American brines containing under 200ppm lithium using renewable electricity and minimal chemicals.

  • Updated Aug 4, 2026

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