Nordic-Dutch-based Paebbl, a company that turns captured CO2 into permanent carbon-storing materials, has announced the next phase in the scale-up of its operations.
The company confirmed the “successful” launch of its demo plant, which has been running continuously since late March 2025. The first phase of the project was completed in under 18 months.
Paebbl’s process turns captured CO2 into solid materials used in construction. This method stores carbon and replaces part of traditional cement, which normally releases CO2. Unlike regular methods, Paebbl uses CO2 and less energy, helping reduce the industry’s environmental impact.
The company first used a batch process to improve and scale the technology. With the new demo plant in Rotterdam, Paebbl begins continuous production, aiming to lower costs and increase output.
What will the Paebbl’s demo plant deliver?
Paebbl’s new demo plant, which completed its first continuous production run on March 26, 2025, is set to offer several key contributions to the company’s scale-up journey.
The facility demonstrates that Paebbl’s CO2-to-material technology can operate continuously, proving its readiness for integration into global construction supply chains. With global cement production contributing over 8 per cent (around 4 billion tonnes) of total emissions, Paebbl claims this to be a critical milestone.
Beyond scaling production 20-fold, the demo plant will act as a testbed for process improvement, product development, and real-world validation.
It will provide insights into long-term maintenance needs, identify areas for technical advancement, and help refine Paebbl’s process simulations—paving the way for commercial-scale deployment.
The plant also highlights a faster, more efficient project development approach, made possible through close collaboration with partners SPIE, Schneider Electric, and Vicoma.
The project received a $2.2M (nearly €1.93M) DEI+ grant from the Dutch Ministry of Climate and Green Growth, with backing from investors including Capnamic, 2050, Amazon’s Climate Pledge Fund, Holcim, Aurum Impact, Pale Blue Dot, the Grantham Foundation, and others.
Andreas Saari, co-CEO and co-founder of Paebbl, says, “Reaching this milestone in record time shows how deeply our team and partners believe in the urgency and promise of building with CO2 as an input. With this plant, we’re one step closer to high-performance materials and climate impact going hand in hand, on a scale that really matters.”
“The completion of stage one of our Demo plant is a testament to Paebbl’s determination to make carbon-storing materials a practical reality. By swiftly integrating and commissioning our core equipment, we’re now well-positioned to ramp up production and gather the data we need to move forward to full commercial scale,” adds Arnold Choi, VP of Engineering at Paebbl.
Team expansion
Paebbl reports that operating the Rotterdam demo plant will provide key data to support the next step: building the company’s first commercial facility, planned for 2028. Partner and site selection are already underway.
With teams now working in London, Rotterdam, Helsinki, and Stockholm, and nearly 60 employees, Paebbl is hiring to support its mission of transforming construction.
The company says, “The progress is meaningful, but it’s just the beginning. Scaling breakthrough technology demands relentless iteration, and we’re committed to working closely with our partners to systematically derisk both the technology and the business. What we’ve built so far is real, and so is the work still ahead.”
Brief about Paebbl
Founded in 2021 by Andreas Saari, Jane Walerud, Pol Knops and Marta Sjögren, Paebbl turns captured CO2 into building materials that store carbon permanently. Its goal is to create a large-scale carbon removal solution within the next decade.
In October 2024, the company raised $25M in a Series A funding round to commission its demonstration plant.
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