We have had solar in Dan Diego since 2004 and it has paid for itself nicely. However, they didn’t have back-up batteries back then. We do have a disconnect where we the solar is operational when the grid is down with a couple of plugs so it can act as a generator. But that only works when the sun is out. Otherwise, I have in the past plugged the leaf into an inverter to provide a few outlets at night. Our Leaf has bidirectional capabilities, but there is no EVSE that can pump it into the house which I have seen marketed. I am really looking forward to the Air and the potential to use it to power the house. If I could actually perform energy arbitrage, I could really make the car pay for itself! SDG&E has some huge electric differentials. For the rate plan we are on for EVs, it is $0.093 per kW at night and $0.565 during the peak 4p-9p. At 45 cents per kW in the exchange, i have been told by battery backup installers, that one can only zero out the peak and you are not allowed to do the actual arbitrage. BUT… the CA electricity market is so screwed up, and they are pushing EVERYTHING to run on electricity, it is only going to get worse. At some point the loonies in Sacramento are going to say ”oh sh**, this is not working” and allow us EV owners to push into the grid at peak.
Of course, peak times will change. In 2004 I mused what would happen when everyone got solar? Peak was from 10a-6p, which was sweet For me with solar. Fast forward to today. They have jacked up the power rates so high that everyone (who can) has solar and CA pays other states to take their power during the day. Peak is now in the evening and we are a ‘Ihird world nation state” which wants us to “flex your power since it cannot reliably keep the grid up. In 14 years when ICE cars are outlawed and everyone is charging at night, i imagine peak will be after midnight. I shudder to think what the rates will be….