The holy grail for solar and other renewables is "off-grid".
I'm not sure how you can look at this inexorable progress and not see that's where it's headed.
It's why there are already places where it's illegal to be off the grid.
I'll bet you that before we have ubiquitous self-driving cars we have homes that can produce their own power without the need for a "grid". My hope is that some day the grid will be the equivalent of the streetcar tracks that are still under the pavement in many cities. This is why I'm opposed to any large-scale public subsidy of the "smart grid".
Now that I think about it, my place has a "coach house" in the back. I've turned it into a garage, but there is still a hayloft in it. I've even left the block and tackle above the loft door for decoration. And that's just a few blocks from downtown Chicago. I hope I live long enough to see "the grid" become just another 20th century artifact. Of course, there are some powerful forces aligned to prevent that from ever happening.