PG&E had an airport wide power outage that started early on Thanksgiving Day and lasted most of the day. PG&E then restored partial power on Friday 11/23, but it was ‘dirty power’ (power flickering and may have lost a phase) so the Airport Manager turned off critical systems such as the AWOS and PAPI systems that Friday to try to prevent damage. On Saturday morning 11/24, power to these systems was turned on which required a reset of the electronic equipment and County staff found that these systems incurred damage from the power outage. A Notice to Airmen (NOTAM) was filed for this condition. Since Saturday 11/24, County staff had been working with vendors to get electronic parts ASAP to fix the problems. As of Thursday 11/29, the AWOS is working normally and NOTAM was cancelled. All other electrical systems are currently working but additional work will be needed on the taxiway lights and the PAPI system.