You don’t go all in on solar, that’s dumb and unnecessary. The wind blows when the sun doesn’t shine. We have lots of historical data on how the two would perform and how long a lull would be when neither are performing. Pad that number, put in enough storage to cover that period, and there you go.

Getting to 95% solar/wind/storage is relatively easy. Nuclear does not help this mix. It just makes it more expensive.