San Diego Gas & Electric (SDG&E) offers lower rates to customers for electricity used to charge PEVs. SDG&E's PEV Time-of-Use rates are available in two variations: EV-TOU-2 bills home and vehicle electricity use on a single meter; and EV-TOU bills vehicle electricity use separately, requiring the installation of a second meter. Lower rates are also available to customers who own a natural gas vehicle and use a qualified compressed natural gas fueling appliance at home.