William D. Lese is the co-founder and Managing Partner of Braemar Energy Ventures. See sector focus and contact routes.
William D. Lese is the co-founder and Managing Partner of Braemar Energy Ventures, a firm he established in 2003 to lead investments in power, resources, and infra-tech segments. With over 30 years of experience spanning technical, operating, and investment roles, he previously worked as a Partner at Mantis Holdings and was an original team member at Sithe Energies. Braemar focuses exclusively on technology and communications opportunities within the energy sector, targeting promising young companies to guide them into the broader energy market. Lese is responsible for specific investments in General Fusion, Metalenz, and Renew Financial, while also serving on the boards of Carbonfree Chemicals, Voxel8, Fulham, Utility Associates, Lusbio, and Brightvolt. Notable portfolio companies under his oversight include General Fusion, which develops fusion energy, and Metalenz, a leader in optical sensing technology. His distinctive background includes designing his first solar panel at age 17, authoring research papers for the Department of Energy, and pioneering the commercialization of Kinetic Hydro Energy Conversion systems. Lese also serves on the Investment Advisory B
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