Not sure if this has been discussed before, but Australia is in a unique situation because of electricity prices and plenty of sunshine. I noticed the BYD e6 all electric, as depicted in the latest 'Fully Charged' video, has the ability to put electricity back into the grid. (Reference at the end of the clip). Electricity in Australia, England and others can be quite expensive compared to the US and we (UK, AUS) both have 'Peak' and 'Off-peak' whereas I think the US is predominantly cheaper and a flat rate. Under one scenario and generalising of course, should you have PV; after returning from work, you could put energy back into the grid (after your own consumption), from your Model S from say 6pm - 11pm when most power is used. This could be energy gathered during off-peak the night before, then when 11pm ticks over, charge the car up again using 'off-peak' - like the Powerwall. This would have the potential again of reducing 'Peak load' that has already moved from the middle of the day to afternoon because of PV, which then loses its influence; here the Powerwall and/or your electric car, could further reduce peak load. Hopefully hastening the demise of Coal baseload power. Maybe this is a case for RHD markets? I know with the Chevy (Holden) Volt they introduced the 'Hold' mode in UK and Australia before they did in the US, meaning its not unheard of for a car maker to do such things for foreign markets. Comments?