Denmark's King Frederik X officially opened the first commercial CO2 storage facility in the EU, developed by the Danish Greensand project. The site repurposes depleted oil and gas fields, first brought online in 1972, to inject captured carbon dioxide deep beneath the seabed for permanent storage. This marks a shift from extraction to sequestration in the North Sea. The project began as a pilot in 2023 and has now reached commercial operation. It captures CO2 at industrial sources, transports it offshore, and stores it in geological formations that previously held hydrocarbons. This is a concrete example of using existing infrastructure to advance carbon removal, though questions remain about injection rates, monitoring, and long-term liability.
