CO2 capture and storage (CCS)
CO2 capture and storage could play an important role in reducing emissions from coal-fired power plants. Applying technology for capture, transport and storage of CO2 prevents emissions to the atmosphere.
The idea is to capture CO2 from coal-fired power plants, compress it to a liquid and permanently store it deep underground. Suitable storage sites are natural rock formations thousands of metres below the surface, which are similar to natural oil and gas reservoirs.
The concept of applying capture and storage of CO2 to power plants is new. However, the technology already exists and it is already used in other applications:
- CO2 is captured in industrial processes
- CO2 is transported in pipelines over long distances by the oil and gas industry
- CO2 is injected deep underground to enhance oil production in mature oil fields