“We’ve all seen how reliable the electric power supply in Kalifornia can be...when it’s not starting forest fires and burning down your house.”
California imports 26% of its electricity from other states. 46% of the electricity produced inside the state comes from natural gas. Without the ability to import fossil fuel generated electricity from other states, California would be toast, especially as it moves away from natural gas and to more wind and solar generation.
Southern CA gets a pretty big portion of its power from the Hoover dam. Lots of water from the Colorado river also.