That's right. All my neighbors use the excess solar power during the summer, and during the winter I use more grid power than I create. I get credits in the summer and use them up during the winter.

A giant leap in solar efficiency doesn't solve the storage problem, and the storage problem doesn't need a magic physics solution, just large scale heads down engineering. My point is: solar is efficient enough now, and a sound economic choice. I make enough power in a year just with my roof for my house and car. I do need a storage solution to do power leveling, which is what I use the grid for now.