We have a fairly big battery, but cannot operate off grid. The supply is pretty reliable and we need the grid for charging the car. Although we're not getting much sun I can charge up the battery on cheap rate to keep costs down. Come the summer we will be exporting a lot. We have a west-facing roof with no shade. There's a single inverter for it all.
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ok that sounds very nice. Also to partly charge the car just with solar :)
It might take a couple of days of bright sun to fully charge the car. At least in summer I will probably export more than I consume.