I have managed to look deeper into the Octopus V2G up coming tariff, apparently it works alongside the customers existing energy tariff the terms and conditions are quite restrictive. Octopus savings around £850 per year, unfortunately as we have solar panel/battery and Octopus Go tariff the saving would be nearer £150 per year, hardy worth the initial outlay and restrictive terms of use.
I’ve only had a quick glance over what it entails and my honest thoughts are, you have would less controll over V2G compared to what you would have with a typical PV battery system and in my mind this is still by far the more advanced system today with energy – what the future holds I don’t know!
Food for thought –
Whether V2G EV’s will be DC and rely on a device outside the vehicle to convert DC to AC power as that supplied by the grid.
Or whether it will be AC, where an EV’s battery is fed from an onboard bidirectional charger with its own inverter.
Would customers be happy with the EV having a AC bidirectional charger on board and for the car to do the conversion or would the customer prefer an external wall box to convert DC to AC. If the car is left to do the conversion, what happens in the event of a fault – would it be more difficult, more expensive to repair, compared to a box on the wall?
Does the future include selling a car with its own power deal with the carmaker being the electricity retailer or have a deal with an electricity supplier?