Reply #8: They left out Vehicle-to-Grid (VTG) technology

[IDemo]

Electric Drive Vehicles as Distributed Power Generation Systems

As cars and light trucks begin a transition to electric propulsion, powered by batteries, engines, or fuel cells, there is potential for a synergistic connection between such vehicles and the electric power grid. The aggregate power rating of the US vehicle fleet is much larger than the total US generating capacity. If even a small fraction of vehicles could be harnessed as generating assets, benefits would accrue both to the electric power grid and to the vehicle owners. The potential exists for the economic value generated to significantly offset the costs of electric, hybrid, and fuel cell vehicles.

Background

US passenger vehicles are, on average, parked and idle for about 23 hours each day. During this time, they create no value for the user, and there is an associated cost because they need to be stored or­ parked­ while not in use. With the advent of electric, hybrid, and fuel cell vehicles, there is the prospect that idle vehicles can become assets that create value to their owners while parked. By connecting such vehicles to the electric power grid, a large scale, dispatchable electric power generating resource is created.

By itself, each vehicle is small in its impact on the power system. But a large number vehicles have, in aggregate, very significant generating capacity. For example, five percent of California's vehicle fleet could provide 10 percent of the state's peak power requirement. The vehicles would be widely distributed, but they would be located where people are, which to a significant degree is where the power demand is.

The geographically-dispersed capacity could be controlled remotely to provide power when and where it is needed.

more -->> http://www.acpropulsion.com/Veh_Grid_Power/Veh_grid_power.htm

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