Comment $13K is the Only Obstacle (Score 0) 299
I'm poised to install a $4K backup generator in the next few months. I don't live in a region where I can force my neighbors to pay for my tech goodies, and the $9K difference doesn't get paid for on any kind of time horizon that outpaces even a basic interest rate.
The generator also has a near-infinite runtime, in the case of a bad storm. However, it needs more maintenance, so if there were price-parity I might opt for the battery.
Give it another five years and that just might be feasible - good for Musk for getting this ball rolling, and kudos to the early adopters who take it in the pocket to promote the technology.