Due to the great potential in terms of compactness and efficiency, supercritical CO 2 (sCO 2 ) power systems are being investigated in the field of scientific and industrial energy technology. The German research project CARBOSOLA has been initiated in order to drive the sCO 2 technology development in Europe by providing a test loop for research programs and basic component tests followed by an initial system and component design for a future demo plant. In a first project phase, the economic potential of the sCO 2 technology is evaluated and optimized for different use cases based on initial component designs and corresponding cost assumptions. For
the CO 2 turbine different design aspects have been investigated and assessed leading to first design concept.