Carbon capture, utilization and storage is the process of capturing carbon dioxide (CO2) before it is released into the environment, transporting and using it for several products or storing it for decades. The CO2 can be stored in an underground geological formation or form of mineral carbonates.

It helps to prevent the emission of carbon into the atmosphere when producing hydrogen from fossil fuels such as coal and natural gas.
Blue hydrogen is commonly produced through steam methane reformation with carbon capture and storage (CCS) technology. Over 80% of carbon is captured and stored in the process.