We thought about adding a LG Chem battery pack when we did our solar install but the ROI wasn't there. Initial quotes were for $7.5k for a single Powerwall install after incentives. Unlike everything else in the system, the batteries only have a ten year warranty and the arbitrage opportunities are limited with net metering. That said, a year ago I never imagined that we would have a situation where more than 500k 800k 1M people in the state of CA would have planned blackouts that could potentially last up to 5 days. I've had 6 outages during the last two years but none were more than 4 hours and most were under 10 minutes. If battery prices drop a bit more and if easier retrofit options become available, then we'll seriously consider retrofitting our existing setup with a battery backup.curmudgeon wrote: ↑Wed Oct 09, 2019 10:37 am There is one string inverter (the older "Sunny Boy") that I'm aware of which has an option for an outlet at the inverter box which can remain powered during utility outages. If you ran an extension cord around the house, 10 hours or so of power during the day would probably be enough to at least avoid losing the contents of your fridge. I thought it was a little gimmicky, and didn't go down that route I suspect trying to retrofit some properly engineered/permitted solution like that to my micro-inverter system would be pretty costly.
https://www.usatoday.com/story/news/nat ... 916848002/