Why do you say nuclear is as clean as diesel? That is clearly not true.

CO2 emissions equivalent to wind and solar (actually slightly better). Safety (deaths per kWh) also equivalent to wind and solar. And land use much much better. Waste is tiny for the energy produced and easily contained unlike other industries, which is why no one has died from waste.

So basically you're rejecting the safest power source with the least environmental impact, and the only source along with hydro that has actually empirically (in the real world) accomplished deep decarbonization of an electricity grid (e.g. Ontario, France, Sweden).

https://ourworldindata.org/safest-sources-of-energy https://ourworldindata.org/land-use-per-energy-source