The most fossil fuel-intensive stages of the cement manufacturing process now have a low-carbon substitute thanks to Sublime Systems.

The company, which was created by the Massachusetts Institute of Technology and spun off in 2020, raised $40 million in a Series A round of fundraising, with Lowercarbon Capital serving as the round’s lead investor.

The goal of Sublime is to replace the kilns used to make cement, which now contributes to 8% of the world’s carbon emissions, with an electrolyser that can make it from calcium sources at room temperature.

According to Sublime, the procedure would be a first for the industry because it would prevent the discharge of carbon dioxide from limestone as well as the use of fossil fuels.
With the additional funding, the business plans to expand its customer and partner base, hire more employees, test new products, and ramp up production at its pilot plant.

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