Lowercarbon Capital is a climate-focused venture capital firm founded in 2018 by renowned investor Chris Sacca (formerly of Lowercase Capital, with early bets on Uber and Twitter) and his partners, dedicated to backing companies that drastically reduce CO₂ emissions, remove carbon from the atmosphere, and develop technologies to mitigate climate impacts. With over $2 billion in assets under management, it invests primarily in early-stage and growth-stage startups across sectors like clean energy, carbon removal, sustainable materials, food/agriculture, transportation, and advanced manufacturing. The firm has built a large portfolio of over 200 companies, including unicorns such as Crusoe (sustainable compute infrastructure), Watershed (enterprise carbon management), and Solugen (bio-based chemicals), alongside notable investments in frontier tech like Zap Energy (fusion), Heirloom and Avalanche Energy (carbon removal and fusion), Sublime Systems (low-carbon cement), and Crux (clean energy tax credits marketplace). Lowercarbon stands out for its aggressive, founder-friendly approach—providing hands-on support, hustling for portfolio success, and funding high-risk research—while emphasizing that profitable, superior technologies are key to scaling climate solutions and "unf**king the planet."