Excellent point. This should be the top comment. Buying up cheap solar and wind power during peak supply times and storing it for peak demand times should be

Excellent point. This should be the top comment. Buying up cheap solar and wind power during peak supply times and storing it for peak demand times should be more cost effective than building expensive gas/steam plants which would only operate for a few hours a day. It doesn't mean that we've found a solution for base load yet.