Picture: A part of the team celebrating another customer order this month. In these bags, tonnes of CO₂ are being stored permanently in building materials instead of released in the atmosphere. (November 2025)

Nature locks CO₂ into rock over centuries. At Paebbl, we accelerate that same mineralisation process to happen in just a couple of hours. Our customers already use Paebbl materials across many applications and real life projects. This allows us to be cost-competitive on construction materials as we reach scale, and with that bring permanent sustainability benefits to the world.

This last quarter, we've crossed three significant milestones at our Rotterdam R&D facility:

• After completing the build of our Demo plant earlier this year, we have been laser focused on core derisking of the plant, transitioning carefully to sprints of continuous operations: a signal that we're moving into industrial-scale manufacturing readiness.

• Our continuous Demo plant has reached 500 hours of operations, after being launched in March 2025, a major milestone in any manufacturing plant’s early phases of life.

• Our Pilot plant has accumulated more than 2,000 hours of operations, consistently delivering quality products to our growing customer base, whilst optimising the cost-base.

These milestones position us to meet surging customer demand. Leading construction firms are redesigning their strategies around decarbonisation and low carbon solutions, looking for alternatives that are more flexible on feedstocks, less energy intensive and affordable.

This is driving Paebbl’s next transformation: deploying our first commercial-scale facility to unlock more production capacity.

Our technology-first approach combines human expertise, advanced data systems, and rapid technology deployment across manufacturing operations, enabling us to learn at unprecedented velocity while building robust industrial processes.

We're taking you behind the scenes of what industrial-scale carbon mineralisation actually looks like: the progress, the setbacks, and why every hour of operation matters.

Optimising manufacturing operations: learning velocity at scale

Picture: Our Demo plant, located at our R&D centre in Rotterdam (operating since March 2025)

Our pace of execution has been driven, amongst other things, by using data-driven systems to make decisions, as well as our early adoption of AI, with very clear implementation and ways of working, including safety guardrails. This ever-growing knowledge flywheel allows us for continuous improvement and a pace of learning unseen before in the industry.

We've equipped the Demo plant with comprehensive sensor coverage for one reason: to extract maximum learning from every operational moment. Each run, whether successful or challenging, generates data that compresses our development timeline. We leverage the experience of the operation team using this data to optimise our process.

We've significantly upgraded our ability to learn from the Demo plant:

• Advanced data monitoring allows us to match events with time-series data, empowering engineers to track performance remotely and collaborate with on-site operators for quicker decisions. By connecting data from our reactors and lab equipment to the cloud, we track our process from end-to-end. When something doesn't behave as expected, we know immediately rather than discovering it hours later.

• Seamless knowledge flow: We’ve built our own AI tooling system that acts as an internal knowledge base. This tooling ensures anybody in the company can query anything that has been happening inside Paebbl, removing friction and giving Paebblers high agency tools.

We are actively augmenting engineering at Paebbl. We can run one million parallel simulations, but we only have one world. By simulating the physical world, we are creating digital twins of our reactors, production lines and ultimately our value chain, allowing us to build materials faster and with lower capital expenditure.

So, what's next?

We were able to deliver a technology that sequesters carbon permanently instead of emitting it, already used in real-life customer projects. We’re now working on operational efficiency and continuous processes at industrial scale, designing our FOAK plant.

The challenges we've encountered are all expected parts of de-risking a novel process. With every run, we're improving and we can deliver more materials to our customers in demand of more options to store carbon.

We’re incredibly proud of the accomplishments of the team in record time and are looking forward to announcing many more milestones being reached.

Looking back, the real milestone isn't just the hours accumulated, it's the rate at which we're learning and able to improve based on data.

Reach out to us if you want to make a real headway on decarbonisation.
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