Quantum Energy Partners, a venture capital firm founded in 1998 and based in Houston, focuses on investing in companies in the sustainable energy sector. With a track record of successful exits and a preference for startups that are 6-10 years old, Quantum typically invests in rounds with 4-5 other investors. The firm has a wide range of portfolio companies, including ChargePoint, Seismos, and RigUp, and is active in the Energy and Software sectors. Quantum works closely with entrepreneurs, providing financial, technical, operational, and executive management expertise to help them succeed in the fast-evolving Sustainable Energy Ecosystem.