Note that we assumed that a DACS plant can be paired to each electricity source without adjustment apart from intermittent renewables. In this case, the DACS plant capacity factor was assumed to be the Email: jpy1@hw.ac.uk RCCS, Heriot-Watt University minimum from the intermittent renewable capacity factor and the assumed maximum DACS plant capacity factor of 90%. The possible ranges of intermittent renewable capacity factors for each country were identified in an International Energy Agency (IEA) report on DAC, available in the ESI Table . The IEA report provides global intermittent renewable energy capacities assuming the maximum capacity factor between solar photovoltaic and wind. The lowest capacity factors provided are generally found inland, and the highest in coastal regions or offshore. Therefore, we assumed the worst-case intermittent renewable capacity factor to have the electricity cost and carbon intensity associated with solar electricity, whilst the best-case intermittent renewable capacity factor was assumed to have the electricity cost and carbon intensity associated with wind electricity. The middle values of capacity factor, cost, and carbon intensity were assumed where median values were needed.