Brookstreet Hollins Ventures is a cleantech-focused venture capital firm headquartered in Austin, United States, established in 2006. The firm invests primarily at later venture stages, with a focus on sustainable energy and resource efficiency technologies. Its investment activities are concentrated in North America and Western Europe, with a global syndication approach. Brookstreet Hollins targets companies addressing environmental and industrial efficiency challenges. The firm typically participates in larger investment rounds and collaborates with institutional co-investors.