On Sep 13, 2009, at 3:29 AM, Michel Jullian wrote:
Horace and Terry, if you read carefully, they say: ""- Normal charge: Household electric power socket - Quick charge: 50% capacity in 10mins " It's the normal charge which can be done through a 220V outlet, not the quick charge.
The typical home here has 100 amp service, or 200 amp service. A 1000 amp single family residence service would be extreme, if even available.
However Horace's calculations made me realize that the kind of grid which would be needed for a V2G (vehicle to grid) scheme to solve EV fast charging issues by sharing battery power is considerably beefier than the existing residential power grid! Michel
Yes. That's bad news and good news. It means some kind of permanent home energy storage system is needed if quick charging is a necessity. Wide use of such a system, combined with smart meters, could provide grid stability, shave peak demand, and facilitate use of solar and wind power by absorbing peak availability. The problems with such networked home energy storage systems might be cost and system vulnerability to hackers.
Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/
