• BEI

  Participated · Series B · Aug 2026

  BEI develops and manufactures anode-free lithium metal batteries designed for high energy density and power; its current-generation cells exceed 500 Wh/kg according to the company. Independent testing by About:Energy confirmed leading energy density and power characteristics, and a BEI-powered drone demonstrated over 30 minutes of flight at −26°C during a field demo in Finland. BEI reports more than 30 global UAV customers are evaluating or deploying its cells, which are already integrated into operational small unmanned systems. The company is commercially shipping its AFLMB cells today while advancing a roadmap targeting future cell generations with energy densities above 600 Wh/kg. With the Series B proceeds, BEI plans to scale manufacturing, run customer qualification programs, and expand commercially across Korea, the U.S., and Europe. Strategic partnerships and investor relationships aim to strengthen supply-chain resilience and support adoption in defense, robotics, and electric mobility markets.

• Stion

  Led · Equity · Dec 2011

  Stion produces high-efficiency thin-film solar modules using a simple, low-cost monolithically integrated circuit design and state-of-the-art materials and device technology. Its modules have a 65 cm x 165 cm form factor and Stion reported a production-scale monolithic thin-film circuit verified at 14.1% efficiency by NREL. The company is headquartered in San Jose, California and recently opened a mass production facility in Hattiesburg, Mississippi. Stion is continuing planned expansion of the Hattiesburg facility and will establish a subsidiary, Stion Korea, to build a thin-film module factory to serve Asian and European markets. As part of its strategic growth, Stion said it will make a $35M initial investment into Stion Korea and pursue collaboration to lower costs and improve module efficiency through equipment development. Stion is a San Jose, Calif.-based startup developing thin-film solar panels using CIGSS (copper indium gallium sulfur-selenide) technology. Its core product is CIGSS thin-film photovoltaic panels and the company has been working to move from laboratory testing to commercial sales. Under a recent deal, TSMC bought a $50 million stake, signed a licensing and joint development agreement, and will manufacture the solar modules Stion needs to commercialize its products. The agreement effectively transfers the CIGSS design to TSMC, according to the article. Stion previously raised $6 million in 2006 and $15 million in 2007 and has backing from investors including Khosla Ventures, General Catalyst Partners, Braemar Energy Ventures, Moser Baer Photovoltaic and Lightspeed Venture Partners. The company has benefited from corporate financing amid a broader pullback by venture capital away from thin-film projects.

No current team members are available.