William Lese
InvestorManaging Partner at Braemar Energy Ventures · Chief Compliance Officer at Aquarian Holdings
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70 people in our graph share verified history with William — schools, employers, funds. One of them is your warm intro.
Daisy CaiunlockedWilliam: together at Aquarian Holdings (2025–2026)
×9William: together at Aquarian Holdings
×2William: together at Braemar Energy Ventures
About
Co-founded Braemar in 2003 and leads the firm's power, resources, and infra-tech investing. He has over 30 years in energy innovation, was previously a partner at Mantis Holdings and an early member of Sithe Energies, and holds an MS in Applied Energy Science and a BA in Physics from NYU.
Contact· self-published, not guessed
Deals · 2
Utility AssociatesBoard seat
via Braemar Energy Ventures · filed Jun 2018 · $4.8M raise
IoxusBoard seat
via Braemar Energy Ventures · filed Jun 2015 · $3.6M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Braemar Energy Ventures
Ben Rogers
Venture Partner at Braemar Energy Ventures
Carsten J. Reinhardt
Strategic Advisory Board member at Braemar Energy Ventures
Dennis R. Costello
Partner at Braemar Energy Ventures
Diane Bao
Associate at Braemar Energy Ventures
Don Tappan
Principal at Braemar Energy Ventures
Dorothea Bersani
Chief Administrative Officer at Braemar Energy Ventures
Emily Reichert
Strategic Advisory Board member at Braemar Energy Ventures
Eric A. Schultz
Chief Financial Officer at Braemar Energy Ventures
Frequently asked questions
- Who is William Lese?
- Co-founded Braemar in 2003 and leads the firm's power, resources, and infra-tech investing. He has over 30 years in energy innovation, was previously a partner at Mantis Holdings and an early member of Sithe Energies, and holds an MS in Applied Energy Science and a BA in Physics from NYU.
- Where does William Lese work?
- William Lese is Managing Partner at Braemar Energy Ventures.
- What boards does William Lese sit on?
- William Lese holds tracked board seats at Ioxus, Utility Associates.