The flip side is that in an event like that, the power is worth far more than $20 to the owner of the PowerWall. I lived through that outage, and I lost more t

The flip side is that in an event like that, the power is worth far more than $20 to the owner of the PowerWall. I lived through that outage, and I lost more than $20 in food that spoiled in the fridge/freezer (didn't have a good storage container to put it outside where the raccoons/cats couldn't get it). Some people lost dramatically more than that when their pipes froze and burst. Central heating also doesn't work without power. They draw less than 600 watts. In that situation, would you rather have $20 or enough power to have your heating run for 24 hours? And that's actual runtime, you could probably keep your house warm-ish for 2 or 3 days by turning it on and off. Personally, I'd only be interested if joining something like VPP came with a substantial subsidy on the price of the PowerWall or a monthly payment that could offset a significant portion of the cost. Or it had enough storage that I actually had extra power after running essentials (it does not currently).