Neustark operates the first commercial network of carbon-mineralization sites in Switzerland. More than a dozen plants at concrete recyclers now store a combined 5,000 t CO₂ each year, with a goal of one million tonnes by 2030.

The process is simple and permanent: biogenic or DAC CO₂ is liquefied, transported short distances, and injected into crushed demolition concrete. Inside the pores of the aggregate the gas reacts with minerals and turns into solid carbonates in minutes. The treated stone is then reused in new building projects, keeping the carbon locked away for 1,000 + years.

Every tonne is measured and verified under the world’s first Gold Standard methodology for tech-based carbon removal, giving buyers high-integrity credits with full transparency. Alongside climate impact the plants cut landfill waste, lower the need for virgin gravel and create local green-tech jobs across Switzerland.