The cheapness of renewable is due to its guaranteed prices by law. Once these subsidies end and the free market prices take over, you lose everything. Reason will take over sooner or later - bubbles can't be inflated forever.
Nuclear power costs a lot of money and is highly subsidiest.
A nuclear power plant needs tons of protection mechanism: has to withstand air plane attack, security clearance for all employees, tons of regulation.
Do you know what happens in Germany when a castor transport happens?
Do you know how expensive Tschernobyl still is?
And then you have the waste.
They are tanks.
If you use solar heat to support your oil or gas, you will be able to reduce your fossil fuel consumption noticable