The volumetric rate for electricity is almost totally irrelevant. California's bills are dominated by the fixed cost of the grid, and we use very little grid power compared to other states, so the volumetric rate has to be really high as a consequence. Electric power bills in California are in the middle of the pack compared to the other states, almost exactly the same as Texas and less than ten other states.
Volumetric rate is all that matters to normal consumers. It doesn’t matter where the costs come from or why. Only $/kwh.