A diesel run powering Wrangell is expected to wrap up on Saturday, according to its electrical superintendent.

Clay Hammer of Wrangell Municipal Light and Power explained the 11-day shutdown of the Tyee Lake hydroelectric facility was planned, in order to conduct annual maintenance on the lines. The main goal has been the replacement of 105 marker balls which make transmission lines visible to passing aircraft. That work, being undertaken by Southeast Alaska Power Agency, began on September 7.

The shutdown began September 6 at 8:15 a.m., at which point Wrangell switched over to its diesel g...