On top of the "The Electric Home Rate Plan includes a $15-per-month Base Services Charge"... because people were starting to get 100% of their power from solar and it was "unfair".
The problem is that the electric grid needs a minimum amount of usage to stay stable. If everyone stopped using it there would be no public electric grid which would be much worse.
You cant legally disconnect a residential residence in CA from the grid unless you get some HEAVY permits. Thats one of the reasons PGE introduced the minimum fee, people with solar. Some people were making a profit pushing electricity into the grid so they make it 0.03c per kwh credit instead of wholesale.
Half the houses over here have solar now when you drive down the street. Im thinking of getting it too.