Sublime Systems
Next-gen cement, so we can keep building.

Sublime Systems is a climate tech company developing a next-generation cement manufacturing process that replaces traditional high-emission kilns with an electrochemical process. Their product, Sublime Cement®, reduces energy use by 30–40%, eliminates CO2 and other pollutants, and co-produces critical minerals from low-value feedstocks. The company has been deploying cement in real-world projects since 2023 and is scaling toward kiloton-scale production.
Sublime replaces the traditional kiln with a targeted electrochemical process that operates at ambient temperature, converting rocks and industrial waste into clean cement while co-producing pure critical mineral streams.
construction companies, architects, cement manufacturers, and technology hyperscalers seeking low-carbon building materials
Background.
- Status
- launched
- Business model
- unknown
- Company
- Sublime Systems
- Launched
- 2023
Similar projects.
Editorial take on the space this project sits in — momentum signals, adjacent moves, our call on whether the wedge is real. Get pinged when we publish a new read or when the landscape shifts.
Have a take on this space?
Tell us what you’d build differently, where you think the incumbents miss, or what we’ve gotten wrong about this project. Comments + reactions are coming soon.