Ontario is moving forward with ultra cheap overnight electricity. Who's going to use their battery and price arbitrage to shrink their bill.
@PrivatePilot is probably in the best position as he has practiced part of the solution. Ideally it would be automated though. They explicitly do not allow this with conventional power storage but I'm not sure if they thought about vehicles.
The Ontario government says it's advancing plans to create an 'ultra-low' overnight electricity rate.
toronto.ctvnews.ca
Edit:
~2.5 c/kwh 23:00 to 07:00. Peak power is ~17 c/kwh. So there is about 15 c/kwh arbitrage. If you are work from home, have an inverter that can run your A/C and an EV, that should be financially viable even with efficiency hit of multiple conversions. You need the inverter, ATS (controlled by something smart to flip at certain times only if EV is plugged in, if you exceed draw off 80% of inverter capacity flip back to grid, if EV battery drops to xx% flip to grid) and some wiring. If you want the EV to be full the next day, just don't connect the inverter.