Yes they "grandfathered" us in, but changed the rates to make less money for us and more for them. For example, the "peak" rates are less for the grandfathered plan (where I make my money between 11-5 pm) and higher for the new plan, where peak is between 4-9 pm. During the winter rates, my "off-peak" is now .24409 while semi-peak is .249. Basically 1/2 cent more -- so my cheapest rates are 24 1/2 cents! If you are NOT on the 'grandfathered' plan, then you get peak rates (between 4-9 pm) of .24799 (note less than my semi-peak rates), semi-peak of 0.23894 (not between midnight and 5 am and 4 pm and 9 pm), and off-peak of .22889 for midnight to 5 am. I'm not sure how being grandfathered in is helping.
I cannot find any references now to the minimum line fee rate. There was a letter that came out a while back that discussed how they were changing tiered rates from 4 tiers to 3, then two 2 tiers, and then back to 3. They've already gone through this cycle. It may have been proposed but not approved. As I remember it, this was all back when they first started with the minimum use fee of $10/month. The article said they wanted to raise it to $15 in a couple years, then to $20 some time after that. Again, maybe that was never approved.
My 'grandfathered' in expires September of this year -- 5 years after my authorization to power on my first solar system. By this time I hope to have a couple power walls. My only use from the grid will be in the middle of the night to charge my cars. If my batteries get full by 12 to 3 pm or so, then I guess I'll be pushing power to SGE&E at a slightly higher rate for a few minutes until my generation < my use, when my batteries will start being used to power the house.
I agree with the V2G (or more specifically V2H). If I could use my cars that would put 160 kWh at my disposal rather than 24 kWh of a couple power walls. Actually, I'd like both, since I want to be able to drive my cars during the day when the sun is shining and charging the batteries.
