Dive Brief: The California Independent System Operator (CAISO), California Public Utilities Commission (CPUC) and California Energy Commission (CEC) released their final root cause analysis report on Wednesday, outlining key factors that led the state to trigger rolling outages last summer. The conclusion largely mirrored preliminary findings, reporting that an extreme heat wave caused by climate change led to excessive demand, while resource planning targets under a changing power supply have not kept up with supply-demand, and some market practices exacerbated the supply issues. Renewables and storage advocates said the report is evidence California should be more aggressive in investing in long-term energy storage, to ensure power from intermittent resources such as solar can be available during peak hours.