Plug-in Vehicle Owners Take Advantage of Off-Peak Charging

In the San Diego area, electricity rates are lowest between midnight and 5:00 am. Plug-in vehicles and charging equipment can be scheduled to begin charging when rates are lowest. Analysis of the EV Project data from the San Diego area showed a pronounced spike in charging after midnight, demonstrating the willingness of plug-in vehicle owners to schedule a delay for charging when there is a benefit. An example of typical weekday charging shows the peak for home charging demand of all study vehicles in the area was over one megawatt at 1:30 a.m.