This is most interesting because I think the opening sentence pretty dramatically underestimates the probably uptake of EV's in the next 5 years. If the more likely levels of uptake do occur then this makes the overall comment even more worrisome.
We really do need to be planning a very different, very robust, decentralised grid to cope with these changes, and also develop the V2G hardware and software to maximise the opportunities, as well as to manage the risks.
“If you look at a world where 20% of new vehicles are, in the early 2020s, going to be electric, that adds roughly 1GWh of batteries to the system and that's assuming less than 10% of what's out there can actually be used for things like ancillary services. “This is absolutely enormous, it's five times the last EFR tender so my concern is that a lot of forecasts are not taking this into account and that's why at the moment we're in a bit of a wait and see pattern.” The number of plug-in or fully electric vehicles remains low, however it has grown considerably. According to figures from the Society of Motor Manufacturers and Traders (SMMT), around 85,000 claims have been made through the Plug-in Car and Van Grant schemes by the end of 2016.