Steady-state design of CO2 pipeline networks for minimal cost per tonne of CO2 avoided

► A high-level decision tool for CCS network design is developed. ► Procedure minimises the unit cost of CO2 avoided for a CCS network. ► Under typical conditions, capture design is independent of network. ► A network-integrated compression strategy is preferred over pre-set pressures. ► The “best” network design is not very sensitive to changes in economic parameters.