Developing carbon-neutral Portland cement
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

July 1, 2025
Brimstone advances plans to build first new U.S. Alumina plant in over 50 years
Brimstone is making significant progress in establishing the first new alumina plant in the U.S. in over fifty years, aimed at enhancing the aluminum supply chain. This development underscores...
Read on BIC Magazine »June 30, 2025
Brimstone Advances Oklahoma Plans to Build First New U.S. Alumina Plant in 50+ Years
Brimstone is advancing its plans to construct the first new alumina plant in the U.S. in 50 years, located in Oklahoma. This initiative promises to enhance domestic alumina production and...
Read more »
February 6, 2025
Brimstone plans to expand beyond cement with low-carbon aluminium production
Brimstone is expanding its innovative approach beyond cement to include low-carbon aluminium production. This strategic move highlights the company's commitment to sustainability and positions it...
Read on alcircle »
January 10, 2025
Brimstone's decarbonised cement manufacturing process pioneers smelter-grade alumina production
Brimstone is revolutionizing the cement industry with its innovative decarbonized manufacturing process, which also enables the production of smelter-grade alumina. This advancement significantly...
Read on alcircle »
September 20, 2024
How To Choose A Money-Making Busines - Melissa Houston
Brimstone is celebrated for its innovative approach to sustainable business practices, showcasing how companies can thrive while prioritizing environmental responsibility. Their success story...
Read on Hustle24 »
September 14, 2024
Meet 2024's local weather innovators below 35 - My blog
Brimstone shines as a climate innovator, celebrated for its groundbreaking work in sustainable materials. The company is recognized among 2024's top innovators under 35, showcasing its commitment...
Read on My blog »More Ventures in Energy & Environment
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