No, wind snd solar are variable, but that doesn't mean unreliable. The variability has to be factored into design load at the grid scsle. On the other hand, nuclear is invariable which is actually problematic without the ability tl change demand response, snd at the dmse time is often not that reliable . At one stage recently half the French nuclear stationd were off line due to the combined impacts of a dnall tremor and éarge scale emergency shutdowns after many reactors were found tp be hsve serious corrosion issues. This resulted in France having to import a lot of power and fire up coal station