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Carbon Capture and Storage – A Roadmap for Scotland

study has shown that most oilfields in the northern North Sea cannot easily be used solely for CO2 storage because sea water injection commonly used to maintain field pressure during oil production, significantly reduces the amount of storage capacity for CO2.

Pipelines are the best option for the secure and continuous transport of millions of tonnes of CO2 from different CO2 sources to collection hubs onshore and then to offshore storage hubs for local distribution to diverse storage sites. Several routing options exist and, importantly, can include the connection of pipelines carrying CO2 originating from England or continental Europe. Capital and operational costs for CCS projects are similar to those of the hydrocarbon industry.

Electricity generated in Scotland from power plant fitted with CCS is shown by this study to be comparable in price to that generated from other low-carbon technologies. The cost of abatement per tonne of CO2 is cheaper on coal plants than on gas, because coal produces larger amounts of CO2 per unit of electricity. However, the cost per unit of low-carbon electricity from coal and gas CCS is approximately the same.

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