Lowercarbon Capital
Lowercarbon Capital is a climate technology venture capital firm co-founded by Chris Sacca and Crystal Sacca in 2018. The firm backs companies working to cut greenhouse gas emissions, remove carbon from the atmosphere, and build climate resilience across energy, transportation, industrial materials, and agriculture. With approximately $2.4 billion in assets under management, Lowercarbon has invested in over 90 companies, including notable portfolio companies such as Commonwealth Fusion Systems, Crusoe Energy, and Solugen.
Focus Areas
Portfolio
2 companies in our directory
Seabound
Seabound was founded in late 2021 by Alisha Fredriksson and Roujia Wen, who met while studying at Minerva University. Fredriksson, a Swedish-Canadian climate entrepreneur, previously built Liquid Wind, a maritime e-fuel startup. Wen, a Chinese engineer with expertise in mathematics and theoretical physics from Cambridge, leads technology and systems development. The company developed a compact, retrofittable system that captures CO2 from ship exhaust and converts it into solid carbonate pellets for offloading at ports. Seabound completed its first full-scale maritime carbon capture units in February 2026 and has won the UK Government's Clean Maritime Demonstration Competition twice. The company secured a €1.5M European Space Agency award and has raised $6.8M in seed funding from YCombinator, Lowercarbon Capital, EMLES Venture Partners, and strategic investors Eastern Pacific Shipping and Lomar.
Isometric
HiringIsometric was founded in 2022 by Eamon Jubbawy, who previously co-founded Onfido where he served as COO and President, scaling the company to verify over one billion identities before its $650M acquisition by Entrust. Jubbawy studied Economics and Management at Keble College, Oxford. Isometric addresses trust in the carbon removal market through an AI-native science platform that issues monthly certificates with real-time expert verification, maintains a comprehensive registry with full evidence documentation, and operationalises verification protocols. The company serves major enterprises including Google, Microsoft, Shopify, Anglo American, and Molten, and maintains a network of over 400 scientists and ecosystem partners. Isometric raised $25M in seed funding co-led by Plural and Lowercarbon Capital, with participation from angel investors including Niklas Zennstrom (Skype), David Helgason (Unity), and Ilkka Paananen (Supercell).