lkkms2 is correct. Your setup was from the Ecotality / Blink / LEAF experimental rate project from a few years ago...
It is correct that if you're adding solar, you mostly likely would want all of your generation and consumption to go through a single meter for maximum flexibility, and after summer 2017 your new solar system would be considered a Net Energy Metering 2 installation (which requires that you be on a TOU rate). The natural choices for that rate would be EV-TOU2 or EV-TOU5, because they don't have any tiers (which is beneficial for EV drivers charging their cars).
Which rate would be best for you?
It depends on how much energy you're going to be buying from the utility on an annual basis after your solar is installed. If the answer is "not much" because you will be generating what you consume, then EV-TOU2 is probably the best rate. No monthly fee, and a $10 minimum monthly bill if you actually didn't buy any energy from the grid. If your answer to how much energy you'll be buying is "A decent amount because my consumption is higher than my generation", then EV-TOU5 would probably be better. It has a $16 monthly fee, and then you can buy super off-peak energy for a little over 9 cents per kWh.
When you decide which rate you want to be on, I can work with you to have your current second meter turned into what we would call a "load research meter" or a "non-billing meter". It would remain in its position, the charger would still work, and there would be no monthly bill that would come from the second meter.
Your main house meter would be on the TOU rate that you choose, and everything would work like it should.
If you'd like me to help, please send me a private message with your contact information, account number, the meter numbers from your two meters, and what rate you'd like your main meter to be on. I can send a request to the right group to get the ball rolling. It may take a billing cycle or two to get everything changed.