Intermittency just mean that we cant switch society over to it wholesale. - CCS is a daft idea, because a coal fired plant with ccs is going to be at even more expensive and difficult to build than a nuclear powerplant, and the potential failure modes make chernobyl look harmless - imagine what happens if the geological storage ruptures after 15 years of operation? - Everything above the storage point will chocke to death. So its simply worse than nuclear plant in every possible way. and to top it off, we dont know how to actually build them. Replacing replacing coalfired plants with reactors will be cheaper and safer both..