Lowercarbon Capital

Chris Sacca, Crystal Sacca, and Clay Dumas lead the partnership. Chris Sacca previously built Lowercase Capital, where he made concentrated early-stage bets on Twitter, Uber, and Instagram. The team operates with a flat structure, and Sacca has publicly stated they avoid building layers of non-investment staff.

The firm draws heavily from Sacca's network and its reputation as a non-dilutive, founder-friendly climate investor. It proactively identifies scientists and engineers emerging from labs and research institutions. Lowercarbon also accepts inbound applications, and publicly emphasizes that it reads every pitch deck submitted through its website.

Lowercarbon primarily makes direct investments in early-stage startups. However, it structures itself with the flexibility to make follow-on investments into later rounds within its own portfolio. There is no public record of the firm acting as a traditional limited partner in other venture funds.

The firm focuses on pre-seed, seed, and Series A rounds. It explicitly targets companies that are often still in lab-scale or pilot phases, where technical risk remains high. Chris Sacca has stated the firm is comfortable writing first checks into science-heavy startups that may not generate revenue for years.

Lowercarbon Capital is a separate legal entity with a completely distinct investment mandate from Lowercase Capital. While Chris Sacca founded both, Lowercase focused on consumer internet and software. Lowercarbon exclusively pursues climate technology with a hard requirement that portfolio companies have the potential for gigaton-scale carbon reduction.

Yes, the firm operates the Lowercarbon Foundation, a grant-making entity that supports non-commercial climate research and policy work. The foundation is structurally separate from the main venture funds and does not take equity positions. Grants flow to academic institutions and non-profits working on scientific climate questions that are pre-commercialization.

Lowercarbon often leads rounds and does not publicly require co-investors on every deal. However, it has co-invested alongside generalist deep-tech funds and climate-specific allocators like Breakthrough Energy Ventures. The firm's large fund sizes give it the capacity to act as a sole institutional lead when it chooses.