Sammamish - Juanita 115 kV transmission line
Project overview
The Sammamish – Juanita transmission line, completed and energized in December 2023, was a critical upgrade required to increase system capacity and reliability for more than 61,000 customers in Redmond and Kirkland.
This project added just over five miles of new and upgraded 115 kV transmission line, upgraded aging substation equipment and looped the Totem Substation so it is now connected to two transmission lines. If one line goes out, the other line will still feed the substation and provide power to customers.
This project ensured that PSE can continue to supply customers in Redmond and Kirkland with dependable power for years to come.
