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Minus Materials
Bio-renewable carbon-negative limestone for decarbonization of portland cement
Founded
2021
Employees*
2-10
Funding to Date*
$275,000
* Data source: Crunchbase
CEO Sarah Williams, PhD
“Imagine a world in which using more cement actually heals the planet. That’s our power — and our promise.”
One in every 12 carbons released in our atmosphere last year came from the production of cement

More info at the IndieBio website

Minus Materials grows carbon-negative, biorenewable limestone – the main feedstock for portland cement manufacturing – using calcifying microalgae called coccolithophores. Our solution yields a 60% reduction in CO2 emissions without changing anything else in the process, and it can be stacked with green clinkering and carbon capture utilization and storage technologies to produce carbon-negative cement.