Solving cement’s carbon problem.
Cement built the modern world. It’s also one of the biggest sources of CO₂ on the planet—more than all the world’s aviation combined.
~8%
of global CO₂ emissions come from cement production
4B+
tons of cement produced globally each year
3B+
tons of CO₂ released annually during cement production
THE PROBLEM
The problem starts with limestone.
When limestone is heated to make Portland cement, nearly half its weight escapes as CO₂—that’s before counting the CO₂ released from energy use. For decades, replacing some of that cement with fly ash helped offset this. But coal plants are closing, fly ash is disappearing, and more Portland cement is filling the gap. Emissions are rising at exactly the wrong moment.
THE SOLUTION
The answer isn’t less cement. It’s better cement.
The global population is growing—the demand for shelter, infrastructure, and resilience is growing with it. Terra’s answer is to reinvent cement: making it cost-competitive, lower in carbon, and scalable.
OUR VISION
We exist to decarbonize cement at every point in the supply chain.
Our solutions are designed not only to lower the carbon footprint of cement today, but to preserve resources, protect air quality, and ensure resilient infrastructure for generations to come.
Our investors and partners
HOW TERRA DOES IT
Lowering the carbon footprint of cement at every stage
Cleaning up the supply chain
Terra addresses the carbon problem where it actually lives—at each stage of the supply chain. Not offsetting it. Eliminating it at the source.
Feedstock
OPUS SCM™ starts with silicate rock, which releases no or little CO₂ when processed. The single largest source of Portland cement’s emissions, the limestone feedstock, is removed at the source.
Silicate rock is abundant. Supply is secure.
Production
Terra’s proprietary reactor vitrifies raw silicate materials into OPUS SCM™. The process cuts energy use by eliminating the endothermic reactions that make conventional cement production so intensive.
70% less CO₂. 90% less NOx.
Transport
Conventional SCMs, like fly ash and slag, are often hauled 200–1,000 miles to reach their markets. Terra’s compact plants sit beside existing aggregate mines, close to the markets they serve.
Shorter journeys cut costs and carbon.
THE PRODUCTS
Two products. One mission.
The road to zero carbon
Terra makes cementitious materials that lower carbon without compromising cost or performance. The responsible choice is also the smart commercial one.
Buy OPUS SCM™ direct
Replaces up to 50% of Portland cement with a 70% reduction in CO₂.
- Commercially ready
- Cost-competitive applications
Reserve OPUS ZERO™ early
Replaces 100% of Portland cement. The path to zero carbon.
- Now in concrete trials
- Cost-competitive
RESOURCES
Certifications and documentation
Download emissions data, certifications, and environmental documentation.
GET IN EARLY
Ready to explore what OPUS SCM™ could mean for your business?
We want to hear from you.
Whether you want to source OPUS SCM™ or own a facility in your market, it starts with a conversation.