Of all of the available power sources, nuclear is actually the safest and greenest power available to us. Nuclear reactors provide the most power for the least carbon footprint and that includes green power sources such as hydro, turbine and solar.
Solar power is horribly inconsistent, it requires rare and toxic materials to manufacture (which has it's own completely separate carbon footprint). Look at Germany's power costs compared to France. Somewhere around 50% of France's power is provided by nuclear and Germany's is heading towards renewables and scrapping their nuclear power.
France's nuclear energy spending was 60% of what Germany spent on renewables. France gets about 400 Terawatt hour per year from nuclear but Germany gets 226 Terawatt-hours each year. 45 Terawatt-hours of Germany's renewable power come from burning biomass
energycentral.com
Nuclear power, while you're going to have a larger upfront investment, after you've completed the power station, you're going to be producing a lot more profit/power compared to fossil fuels.
The following video goes into a lot of details and comparison between nuclear vs solar renewables in general.