https://www.greencarreports.com/news/1136058_toyota-tesla-po…
intercst
I don’t like either solution. I think the Ford F-150 Lightning has the right idea. Park a 130kWh battery in the driveway, and on those rare occasions when house power is out, plug it in and draw power from it. That can keep my house going for a week or two. A puny powerwall type of device will last a lot less time. My last major power outage was in 2005 after Hurricane Wilma, and it lasted about a week.
The rest of the time, that 130kWh battery can take you all sorts of places.