I just had a thought: would off-peak electric customers potentially be able to "fill up for less" than folks on the grid paying full-rate electric?
No...I mean for customers on off-peak electric, they pay less for their electric because the energy company ripples them, forcing them to have a backup heat source in the process. The rate for their electric is reduced altogether, not just what is used to heat the home. So theoretically if a customer was on off-peak, they could "fill up" (aka plug their car in at home) cheaper than the next guy over who isn't an off-peak customer.