Houston: "ISS, we've had a problem."
Jim Lovell: "Hey, that's my line!"
Except that a large number of these solar electric plans are grid-tied systems that attempt to use the power company as its battery.
In fifty years, that's how things will probably work anyway. Right now, we just have to use more batteries (or pumped storage of some kind) than strictly necessary.
And, pray tell, how is that relevant for the demonstration of a fact that it already has been done twenty years ago (as a subject of serious research, in fact)? Where do you see me "recommending something"? I strongly suggest that you read things before replying.