INEOS Energy and its partners Harbour Energy PLC and Nordsøfonden AS have begun commercial operations at Project Greensand, the European Union’s (EU) first full-scale site for transport and permanent offshore storage of CO₂. The CO₂ will come mainly from Danish biomethane plants.

Once captured, the CO₂ is liquefied, sent by truck to a dedicated CO₂ terminal at Port Esbjerg, Denmark, shipped aboard the purpose-built CO₂ carrier Carbon Destroyer 1, and injected into the Nini West reservoir in the Danish North Sea. Nini West is a depleted oil field 250 km offshore, and roughly 1,800 m below the seabed in about 200-ft water depths.

The initial commercial phase provides storage capacity of up to 400,000 tonnes/year (tpy) of CO₂, with plans to expand to 4-8 million tpy as demand increases.

The EU is working to meet carbon capture and storage targets of 50 million tpy by 2030, rising to 250–280 million tpy by 2040, but remains far from that scale.