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Developing carbon-neutral Portland cement

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Cody Finke

Co-Founder & CEO at Brimstone

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Employees 21–50
Headquarters Oakland, California, United States
Founded in 2019, Brimstone is a developer of a novel process that produces cement without carbon emissions while maintaining cost competitiveness with traditional cement.

The world produces over 4 billion tons of cement annually—a number only expected to grow. The problem is that cement production accounts for 7.5% of global CO2 emissions, with a total climate impact just behind cars. Brimstone has developed a breakthrough carbon-negative process to produce the same ordinary Portland cement and supplementary cementitious materials used today. These materials have the same quality and performance builders have trusted for over 150 years — now with a positive climate impact. Brimstone's investors include Breakthrough Energy Ventures, DCVC, Collab Fund, Amazon Climate Pledge, and Fifth Wall.

Notable Achievements

  • Developed the world's first process to make industry-standard portland cement without process emissions as certified by a third party and covered in the Washington Post.
  • Raised a $55M Series A from leading climate investors, including Breakthrough Energy Ventures, DCVC, Collaborative Fund, Fifth Wall, S2G Ventures, Amazon Climate Pledge, Acceler8, Gatemore, Impact Science Ventures, Osage University Partners, and SystemIQ.
  • Solution has been recognized by the International Energy Agency, the Washington Post, CNBC, CBS, and honored as one of TIME's Best Inventions of 2023.

Press Mentions

March 5, 2024

America's Top GreenTech Companies 2024

Read on Time »

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