Sublime Systems Secures $40M in Funding Round 

Sublime Systems, a developer of technology to produce decarbonized cement, closed a $40 million Series A funding round, led by Lowercarbon Capital with participation from existing and new investors. 

The company will use the new capital to ramp up production at its pilot plant, build its team, conduct product testing, and advance offtake commitments from new customers and partners.

Sublime’s proprietary process replaces kilns with an electrolyzer that makes cement at ambient temperature from a variety of abundant calcium sources, thereby avoiding both the use of fossil fuels and the release of CO2 from limestone. 

Low-carbon cement is critical to build a decarbonized economy,” said Leah Ellis, co-founder and CEO of Sublime. “We have successfully demonstrated the viability and scalability of our approach and we are able to produce cement with the same or better strength, slump, and durability than today’s portland cement. The support of our talented team and capital from our investors will enable us to operate our pilot facility, secure advance offtake agreements and work toward producing our low-carbon cement at scale.”

Sublime was spun-out of the Massachusetts Institute of Technology in 2020. 

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