Powerwall makes a whole bunch more sense for solar storage. If you're just using...

		nickparker on Oct 29, 2016 \| parent \| context \| favorite \| on: Powerwall 2 and Integrated Solar Powerwall makes a whole bunch more sense for solar storage. If you're just using it for backup power off the grid, you have to convert AC -> DC -> AC again for use. I don't know the all up efficiency of that system, but it's far from great. Probably <70%

The specs list it as 90% efficiency round trip.