The '90s deregulation directly led to an 800% increase in wholesale electricity prices in 2000, and rolling blackouts for customers of investor owned utilities like SDGE (San Diego) and PGE (Central/Northern California). The government owned utilities, like LADWP (serving the Los Angeles area) did not need to resort to rolling blackouts (zero blackouts), and currently have much lower rates* while being fully sustained by the rate payers (not having the parasitic "investors" demanding greater profits allows for proper long-term planning and significantly lower prices for the rate payers).
* Average $0.26/kWh LADWP. Average $0.45/kWh PGE