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Past notices
Notices issued
 over the past 90 days

Home > Stay Informed > Notifications > Alert Warning Emergency Notices

Alert, warning and emergency notices

Emergency notices are issued when operating reserves or transmission capacity limitations threaten the ability of the California ISO to safely and reliably operate the grid.


Click here to sign up for Flex Alerts and other ISO communications. Receive notifications of grid emergencies via the ISO Today app or RSS.

Grid history and facts

Click here for all notices issued over the past 90 days