The Summer 2022 Stack Analysis Report Update (Stack Analysis Update) provides near-term situational awareness on the potential impacts of a west-wide extreme weather event and prolonged drought in the critical months of July through September 2022. The analysis provides a reference point for consideration in energy reliability-related actions that the state may take.
The California Energy Commission’s Stack Analysis Tool is used to identify the potential for a shortfall in planned resources and the amounts and duration of contingency resources that may be needed. This update includes changes in underlying assumptions for supply and demand since the first Summer 2022 analysis was published in August 2021 and reflects the significant progress made in the addition of new resources in 2021. The analysis continues to show the potential need for contingencies under extreme weather events in September, although at a much lower level than previously assessed.