Michel Jullian wrote: > Just thought of a possible way to make V2G viable, for the sake of the > ubiquitous availability of fast charging it would allow without need > for dedicated stations: the utility could make away-from-home fast > charging (e.g. along highways) available at a much cheaper price to > past sellers, modulating the price according to how much energy they > have sent back to the grid.
Given the low "natural" cost of a charge, to make this an interesting incentive you'd need to assume the utilities were charging a rather huge premium for access to the fast-charge facilities on the highway for all but their "charge-sharing club" members; see next paragraph. For a discount to be interesting the base price must be sufficiently high, and at 25 cents/KWh I don't think it would be even close. 50 KWh, which would cost maybe $12.50, is enough to cruise for a couple hours with a moderately efficient car on the highway, and that's a reasonable time to go between "fill-ups". To make this work, you need a *big* incentive, and discounting from that $12.50 "natural" fast-fill price isn't going to do it for most drivers, certainly not for enough drivers to make the plan fly. What's more, the future contains serial hybrid cars, and unless highway fast-charge stations are common and *cheap* there simply won't be a lot of pure-electrics traveling long distances. > > Michel >
