Economics of charging an EV

[Edgar_N]

Quick question -- do EV chargers continue to consume/use electricity while plugged into the EV, after the EV has fully charged? I am trying to determine whether they use more electricity in this "dormant" (I don't know the correct term) state than a typical home appliance. I don't think I have seen that factored into discussions about how much it costs to charge a EV....

Thanks in advance for your responses.

 

[Doug_G]

Quick question -- do EV chargers continue to consume/use electricity while plugged into the EV, after the EV has fully charged? I am trying to determine whether they use more electricity in this "dormant" (I don't know the correct term) state than a typical home appliance. I don't think I have seen that factored into discussions about how much it costs to charge a EV....

Thanks in advance for your responses.

The Tesla Roadster, under normal environmental conditions, consumes very little power when not charging. It loses less than 1% of the battery pack capacity a day. In Standard charge mode it will top up the car once a day. In Storage Mode it will allow the charge to slow deplete to a low level, then it will charge periodically to maintain that.

Under more extreme conditions it will use some extra power; for example, if the garage temperature is well below freezing it will occasionally draw some power to keep the pack warm (unless in Storage Mode).

 

[Kevin Sharpe]

Quick question -- do EV chargers continue to consume/use electricity while plugged into the EV, after the EV has fully charged?

Open EVSE consumes 1.25W when idle;

http://code.google.com/p/open-evse/wiki/Open_EVSE_Specs

 

[Edgar_N]

Awesome. Thanks for the prompt responses.