industry-standard materials
We co-produce three products—ASTM C150 portland cement, SCM, and smelter grade alumina—from common, domestically sourced feedstocks.
cost-competitive at scale
At industrial scale, our business model will allow us to sell three essential products at competitive market prices, enabling future expansion and exports.
optimized for sustainability
Our deeply decarbonized process dramatically reduces the climate impact of cement and alumina manufacturing, sectors responsible for about 8% of global carbon emissions.
latest news
This initiates the negotiations process to finance Brimstone’s first-of-a-kind decarbonized portland cement plant, which would avoid 120,000 metric tons of CO2/year.
Industrial Demonstrations Program Selects Brimstone for $189M Federal Investment
A third-party lab verified that Brimstone cement meets ASTM C150 standards for portland cement, the type of cement used in virtually all concrete construction today.
The Washington Post spoke with our CEO Cody Finke about Brimstone's ASTM C150 certification, the path to commercialization, and the company's plans for the future.
CALCIUM SILICATE ROCK
PRODUCTS
portland cement
Trusted by builders for 200 years, portland cement constitutes virtually all cement used globally today. Yet it comes at an environmental cost, accounting for 7.5% of global carbon dioxide emissions.
4 billion
TONNES OF CEMENT ARE PRODUCED GLOBALLY EACH YEAR.
SOURCE: INTERNATIONAL ENERGY AGENCY
alumina
Alumina is a critical component of aluminum, an essential metal for national security and economic growth. Today, the U.S. relies almost entirely on imports, exposing the market to price shocks and security risks.
90%
OF ALUMINUM IN THE UNITED STATES IS IMPORTED.
SOURCE: U.S. DEPARTMENT OF COMMERCE
SCM
SCM is used to strengthen cement and reduce its carbon footprint. However, despite growing demand, conventional SCMs are becoming scarce as traditional sources, like coal-fired power plants, decline.
2-3X
GROWTH OF SCM MARKET EXPECTED BY 2035.
SOURCE:MCKINSEY
as featured in
News
CBS
Cement accounts for 8% of carbon dioxide emissions. One startup seeks to change that.
Media
NETFLIX
Brimstone is featured on the climate episode of the new series, 'What's next? The Future with Bill Gates.'
News
THE WALL STREET JOURNAL
Concrete is one of our worst pollutants. Making it green is a booming business.
News
THE WASHINGTON POST
Cement warms the planet. This green version just got a key nod of approval.
dive deeper
portland cement
Portland cement, trusted by builders for 200 years, constitutes virtually the entire cement market today. Yet it comes at an environmental cost, accounting for 7.5% of global carbon dioxide emissions.
4 billion
TONNES OF CEMENT ARE PRODUCED GLOBALLY EACH YEAR
SOURCE: INTERNATIONAL ENERGY AGENCY
alumina
Alumina is a critical component of aluminum, an essential metal for national security and economic growth. Today, the U.S. relies almost entirely on imports, exposing the market to price shocks and security risks.
90%
OF ALUMINUM IN THE UNITED STATES IS IMPORTED FROM OVERSEAS.
SOURCE: U.S. DEPARTMENT OF COMMERCE
SCM
SCM, used to strengthen cement and reduce its carbon footprint, is becoming increasingly scarce as traditional sources of these materials, such as coal-fired power plants, decline.
50%
EXPECTED REDUCTION IN U.S. COAL CAPACITY BY 2026
SOURCE: ECONOMICS AND FINANCIAL ANALYSIS
