California´s hydroelectricity plants should produce about 85% of their normal power this summer. The California Energy Commission projects nearly 13% of the state´s power will be generated by in-state dams and powerhouses. That´s up from less than ten percent last summer, when short hydroelectricity supplies across the Pacific Northwest helped contribute to a series of rolling blackouts.
Southern California has received just 30% of its normal winter precipitation. But most hydro production occurs in Northern California, which had near-normal rain and snow.