The Guam Power Authority advised its customers that the Island-Wide Power System may become unstable during post-typhoon restoration, with fluctuating voltages, interruptions and intermittent outages expected until recovery is complete.

Customers whose power has been restored may still experience outages, GPA said. The utility said this is not unusual, as the grid remains fragile during restoration and periods of instability will continue until the island is fully re-energized.

“Please be assured that once your feeder/circuit has been energized your power will return, even as interruptions or outages happen,” the utility said in a release.

GPA said it will work to restore power as quickly as possible and that interruptions should decrease once island-wide restoration is complete and the system stabilizes.

In the meantime, the authority reminds residents to unplug or protect sensitive electronic equipment to prevent damage from lightning strikes or power surges.

Customers experiencing power fluctuations, brownouts, partial power, extremely bright lights, dimming or flickering lights, or water coming from outlets should turn off their main breaker immediately to avoid damaging appliances, GPA said.

Power issues may be reported to the GPA Customer Call Center at 671-647-5787, by email at customersfirst@gpagwa.com or by direct message to GPA’s Facebook page. For power-related emergencies, call GPA’s 24-hour Trouble Dispatch at 671-475-1472, 671-475-1473 or 671-475-1474.