>>39kwh
Our system performed admirably during a recent set of outages where the 11KWH of battery got us through the night until the solar panels kicked in and had the battery fully recharged in about 4-5 hours, which is a cycle we could repeat indefinitely....
... if the skies are clear and there is no snow on the panels
Under cloudy skies, 11kwh is *most* of a day as long as you don't run high-draw appliances like electric heat, AC, dryers, microwave, hair dryer, etc.
When we sized the system, our electrical usage was lower and it originally gave a couple of days. We still need to test the batteries. We may have lost some capacity due to incorrect inverter settings (yup). But as things electrify, houses are going to draw a lot more juice. If you have electric heat or AC, 39kwh is going to go awfully fast.
I'm still a big fan. We have some absentee neighbors with generators (so they don't have to listen to the noise) and after a day of listening to generators, I'm ready to shoot myself. I would personally be quite happy to see them made illegal barring emergency medical equipment or something. But the battery system in a place with clouds and snow and such is still pretty rough around the edges if you have frequent outages that last more than, say, 12 hours.
