Unalaska will be without power for up to two hours early tomorrow morning during a planned island-wide outage.

The outage will start at 4 a.m. Wednesday and will last until around 6 a.m. Engineers will be installing control systems for the fourth engine at the powerhouse during that time.

City manager Chris Hladick says it’s part of ongoing work to get the new engine and a new waste-heat recovery system up and running. He says the last time there was a planned outage like this was for installation of the third engine, two years ago.

Residents call the Department of Public Safety's non-emergency line at 581-1233 if they have questions during the outage.