Thin Line Capital

Thin Line Capital is a venture capital firm based in Pasadena, California, specializing in early-stage investments within the energy and sustainability sectors. The firm focuses on seed and Series A funding for companies addressing challenges related to climate change and resource scarcity. Their investment strategy emphasizes low-capex opportunities in renewable energy, electrified transportation, and climate resiliency.

The firm's investment approach is characterized by a concentrated portfolio, allowing for active involvement and mentorship of portfolio companies. Thin Line Capital aims to build long-term relationships with entrepreneurs, providing not only capital but also strategic guidance to drive success. Their commitment to ethical conduct is evident through their support of initiatives like VC Lab's Mensarius Oath.

Founded in 2017, Thin Line Capital has demonstrated growth and commitment to its mission. In March 2024, the firm closed its second fund, raising $14 million, a significant increase from the $5 million raised for Fund I. This growth reflects the firm's dedication to supporting innovative solutions in the clean energy space and its belief in the substantial economic opportunities presented by decarbonizing the global economy.