Actually California wouldn't be able to stand on its own; not at all.
Without Arizona, California would be living in the dark. Literally. Arizona provides a huge chunk of the electrons that migrate through California's power grid.
I don't know the exact reasons why (some say it's due to "hippie" liberal politicians not wanting to harm the earth, some say due to greedy private enterprises wanting to drive the costs of electricity up) but regardless of the cause, California outright refuses to upgrade its power grid to supply adequate levels of electricity for its own consumption. Even with Arizona providing as much as it does, California still has to resort to rolling brownouts just to keep its nose above the water (don't confuse these with rolling blackouts.)