Hydro and wind kill more people per terawatt hour. That leaves solar (and possibly tidal as that development ramps up). Putting all your eggs in just one form of renewables (solar) would be an insane risk. Base loads need to be addressed in order to phase out the fossil fuels.

There are more options with modern reactor designs. Small modular reactors can be built and brought online cheaper and faster than previous designs. That would allow a faster ROI (reducing fossil fuel usage faster).

Solar, wind, tidal and nuclear should be scaled simultaneously to reach our goals and not think it’s just one or the other.