SecondMuse Capital Competitors

Breakthrough Energy backs companies developing the next generation of clean energy solutions. We invest in bold ideas, fund breakthrough technologies, and shape markets to accelerate innovation across the five major sources of emissions—manufacturing, electricity, agriculture, transportation, and buildings. Founded by Bill Gates, Breakthrough Energy supports companies at every stage, from early discovery to large-scale deployment, using technology, policy, and market-driven solutions to make clean energy affordable and scalable.

First to believe. We lead pre-seed and seed rounds for founders who see a new market coming before it has a name. For twenty years, we've backed movements that grew into categories of their own, from Fitbit, Peloton, Blue Bottle, Duo, Ring, and HashiCorp to a new generation building in AI, biology, space, nuclear energy, robotics, and quantum computing. Over 70 founders have come back to build another company with us.

Heavybit’s 9-month accelerator and venture fund helps seed and Series A developer and enterprise companies scale their go-to-market. Built by a partnership, team, and community of domain experts, Heavybit delivers a tailored strategic and operational plan, structured weekly mentorship, and differentiated capital to help founders achieve breakout success. heavybit.com/accelerator