Compostilla Oxy CFB 300
Compostilla would be based in El Bierzo, Spain. The project operator was Endesa, in partnership with Ciuden and Foster Wheeler. The OXYCFB 300 Compostilla project, completed the work that it had committed to carry out under the terms of its EEPR grant by October 2013, when the FEED study was also released. Subsequently the decision taken was not to proceed to full‑scale demonstration because of regulatory and economic obstacles. The project would operate on a 300 MWe Circulating Fluidised Bed (CFB) supercritical oxy-fuel coal-fired power plant, constructed next to the existing coal-fired power plant of Compostilla. The CO2 captured would be transported by a 120 km pipeline to an onshore deep saline formation. The project could store 1.6 MtCO2/year.
Don Valley is based in Yorkshire, UK. Sargas Power Yorkshire Limited is responsible for the power generation and capture plant and National Grid is responsible for the onshore and offshore transport system and storage site. The project went through a period of restructuring in 2013-2014. The aim was to reducing the initial capital costs and phase the construction of the power and capture plant. This would reduce the initial volumes of CO2 being handled. National Grid is also looking to develop the initial CO2 storage in the North Sea saline formation as a store for a cluster of projects in the North and North East of England (including White Rose). The project is expecting to store up to 10.6Mt CO2 across the first 5 years of operation and approximately 103Mt during the project’s lifetime. With an additional oxy-turbine train these values will increase to 12.6Mt and 125Mt respectively.
ROAD is based in the Port of Rotterdam in the Netherlands. The project operator is a 50:50 joint venture between E.ON Benelux in partnership with GDF Suez Nederland. TAQA Energy B.V. will provide CO2 injection and permanent CO2 storage. The project will apply post combustion capture to a 250 MW slipstream from new 1,070 GW coal and biomass power plant. The CO2 captured will be transported in a 26 km pipeline to offshore depleted gas reservoirs which are located in block P18 of the Dutch continental shelf. The pipeline has a transport capacity of around 5 million tonnes per year. The depleted gas reservoirs are at a depth of around 3,500 m under the seabed of the North Sea and have an estimated storage capacity of approximately 35 million tonnes. The project is expected to capture 1.1MtCO2/year.
Sleipner CO2 Injection
Sleipner is based in the North Sea 250 kilometres west of Stavanger, Norway. The project operator is Statoil in partnership with ExxonMobil and Total. It is a gas processing project, the only non-power project in the Network. The natural gas is stripped via a conventional amine capture of its high (~9%) CO2 content, and then is injected into a deep saline formation via a 1km pipeline. The project commenced in 1996 and as of May 2014 has captured and stored 15Mt of CO2.
The storage site is monitored in accordance with OSPAR and the London Protocol amendments for CO2 storage, the baseline seismic survey having been acquired in 1994. The storage site operates under sovereign regulation (Norwegian Act relating to Petroleum Activities), and the monitoring data is placed in the public domain.