by Terra CO₂US
Supplementary cementitious material made by melting silicate rock into glass. Replaces up to 40% of Portland cement in concrete, 70% CO₂ reduction.
First plant breaking ground Jan 2025 in Texas; shipping Q2 2026.
Updated 2 Jul 2025Checked 10 Oct0 updates this week
Heats silicate-rich rock locally sourced to melt it into glassy material, avoiding limestone roasting.
OPUS SCM is mixed into concrete as a replacement for 40% of Portland cement; the resulting concrete meets strength and durability standards.
The process uses abundant local materials and can be deployed at multiple sites, avoiding the capital and logistics constraints of traditional cement plants.
| Spec | OPUS SCM |
|---|---|
| Cleburne facility capacity | 240,000 tonnes/yearR (reported) |
| Cement replacement in concrete | Up to 40%R (reported) |
| CO₂ reduction vs Portland cement | 70%R (reported) |
| Total Series B funding | USD 206.5 millionR (reported) |
R reported by the company
Terra CO₂
Low-carbon cement, sustainable construction materials, SCM
Terra CO₂ Technologies is a cleantech startup founded in 2016 that produces supplementary cementitious material (SCM) by melting silicate rock into glass, reducing cement's carbon footprint by up to 70% compared to Portland cement.
