The Electric Generation

Irrespective of how they generate the power, off-peak power is very cheap and it poses a profitable opportunity for electric utilities.

Yes, they can be fools and charge EV owners high rates. In doing so, however, they throw away the only new market opportunity they have to sell their off-peak product. They can either seize an opportunity to grab a big share of new profit, or they can waste the opportunity.

What's more, electricity pricing in california is not made absent of utility input. The utilities certainly have an opportunity to shape the pricing tiers which can be offered to EV car owners.

 

Absolutely, I agree with what is here, but the question is do you trust the PUC, PG&E, and SCE to do the right thing. They certainly don't appear to be doing it right now for rate payers. You don't need a long memory to think back to the first fruits of deregulation, that was actually different bad regulation
California's Largest Utility Files for Bankruptcy - New York Times

The trick that these utilities often do is work with government to hike rates
Southern California Edison: Fight over Edison rate hike heats up - Los Angeles Times