Found this on another site (Tesla Owners) but wanted to let people know that if you are with APS, you can apply for a special EV Owner pilot program where they have a super off peak rate of 2.2 cent per kWh from 11pm to 5am. I sent in my information yesterday and got a quick response and am just waiting for the analysis. If interested, send an e-mail to Christopher below and you just need to reference your account# from your electric bill and also provide a copy of the registration for your car in order to qualify for the rate. The given rates also apply for the entire household. Christopher Malotte Sr. Program Coordinator, Asset Deployment & Pilot Implementation 400 North 5th Street, Phoenix, AZ 85004-3902, M.S. 9998 Tel 602 250 3593 firstname.lastname@example.org The overview/process is as follows: The electric vehicle rate has a peak rate (noon - 7pm M-F), off-peak rate (7pm - 11pm and 5am - noon M-F and all day Sat, Sun, and Holidays), and super off peak rate (11pm - 5am M-F). Once APS receives the registration they will run a transformer analysis to see if your local transformer is properly sized, they will run a rate comparison between ET-EV and your current rate, and they will place you on the EV rate if you choose to go with the program. The details of the rate tariff can be found here: https://www.aps.com/library/rates/ET-EV.pdf. Just an additional note that this pilot program currently runs through 2014.