[acidioxide]

Electricity demand does fluctuate, but so does supply from renewables. I think it is easier to store excess power than to deal with power shortage in case of bad weather.

[bayesian_horse]

Doesn't matter the source of the energy if you have to store it anyway. With nuclear power the "good weather" is the actual problem.

[acidioxide]

It is true that the problem of storing energy exists in both cases, but as far as I understand with renewables you lose reliability (in comparison to nuclear power).