Timeline: April 2017-2021
Providing reliable service to customers located on Camano Island has represented a unique challenge for PUD engineers for many years. Transmission outages have affected the three Camano Island substations more heavily than other substations. The island is connected to the mainland by a single high-voltage 115kV line that was originally built by Puget Power. The radial feed results in extended outages until repairs are completed following a fault. It’s difficult and time-consuming to replace the aging line while it is being used to feed the island.
The PUD is currently reviewing alternatives, such as a second line to the island, to provide more reliable transmission service to Camano Island at reasonable cost. An alternative analysis is being completed that includes a review of costs, permits, feasibility, increases in reliability, operational flexibility, performance under various natural disaster scenarios and flexibility for future enhancements.