Nuclear isn't clean by any stretch is it? How much CO2 is produced during the construction and operation of a nuclear power plant? But the point is that they're not as polluting as coal and gas, so maybe part of the mix. Although proponents of renewables like solar, wind, hydro and tidal will say that with more storage, these sources will be enough as long as enough projects are built.
But there'll always be folk who seem determined not to change. I was... now I've got a grandchild.