City of Corona, CA
How often City of Corona goes out
California's grid here runs a bit rougher than most: 1.9 outages from City of Corona in the most recent year, 3 hours total. That is 49% less outage time than the California state average of 5.8 hours a year.
Outage length, and what it means for a generator
Outages here typically run short, about 1.6 hours before power is back - a battery power station or small portable generator should cover the essentials through most of them. More on that split in how often versus how long an outage runs.
What this means for buying a generator
Serving 1,851 customers here, Given how often City of Corona goes out, you should consider a backup generator rather than treat it as optional.
Where this number comes from
These figures come from EIA Form 861, the reliability report a municipally-owned utility like City of Corona files with federal regulators every year - serving 1,851 customers hereaveraged across the whole territory, not any one address or storm. See California as a whole, across every utility that filed: California's outage record. One big storm can move a single year a lot; major event days explains how.