Is it worthwhile to install a separate meter to charge a PiP? I'm in Pacific Gas and Electric territory. With my solar panels, and the favorable E-7 rate (no longer available), I'm paying about 10 cents a kWh off-peak in summer. But in the winter, not generating as much electricity, I get up into tier 3 or even 4, and the cost goes up to 25.4 to 29.4 cents, or about the same cost per mile as gas. Those on the newer E-6 rate would be a couple of cents higher. So a separate meter on the EV E-9 rate would seem to make sense - 5.5 to 7 cents per kWh at night in the lower tiers and it probably wouldn't get above them. But there is a monthly meter charge, plus installation charges. So what are the costs and when is the break-even?