Lowercarbon Capital

Lowercarbon Capital is a venture capital firm focused exclusively on climate technology investment. Founded in 2018 and headquartered in Sunnyvale, California, the firm backs early-stage and growth-stage companies developing technologies that reduce greenhouse gas emissions, remove carbon dioxide from the atmosphere, and explore planetary cooling solutions. The firm operates across three broad investment theses: slashing new CO2 emissions, sucking existing carbon out of the atmosphere, and buying time through interventions that address the near-term consequences of climate change.

The firm invests across a wide range of sectors including energy storage, renewable energy infrastructure, industrial decarbonization, transportation, agriculture, materials science, carbon removal, and clean energy finance. Portfolio companies span diverse technology categories, from thermal battery systems that convert intermittent solar and wind power into 24/7 industrial heat and power, to digital marketplaces that streamline the trading of clean energy tax credits under the Inflation Reduction Act.

Lowercarbon Capital is known for taking an active, hands-on approach to supporting portfolio companies, providing strategic guidance, ecosystem introductions, and operational support from the seed stage through to commercial launch and scale. The firm cultivates a network of founders, scientists, and industry experts that portfolio companies can access as they develop and grow. This approach has drawn praise from founders across the portfolio, who highlight the team's combination of analytical rigor, domain expertise, and operational hustle.

Notable portfolio investments include Antora Energy, which has developed thermal batteries using solid carbon blocks capable of storing heat at industrial scale at a fraction of the cost of lithium-ion batteries; Crux, a digital marketplace for transferable clean energy tax credits; Dioxycle, which converts CO2 into fuel; Isometric, a carbon removal verification platform; Mill, focused on food waste reduction; and Safi, operating in the carbon markets space. The firm has co-invested alongside prominent names including Bill Gates and Chris Sacca.

Lowercarbon Capital targets founders working on technologies that may initially appear unconventional or technically ambitious, with a particular interest in solutions that have the potential to operate at planetary scale. The firm maintains an active job board connecting talent to portfolio companies and engages directly with prospective founders, operators, and collaborators through its platform.