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.