Seattle City Light has completed the conversion of streetlights along the perimeter of Seattle Center to LEDs and its former 480-volt power supply to a 120-volt system. 
Crews finish concrete work for the streetlight infrastructure upgrade at Seattle Center.
Seattle City Light has completed the conversion of streetlights along the perimeter of Seattle Center to LEDs and its former 480-volt power supply to a 120-volt system.
As part of the overall Mercer Corridor project, the streetlight upgrades will improve safety and reliability.
Seattle Center was one of the few remaining areas in Seattle that still used a 480-volt system to power streetlights. Construction began in mid-to-late February, and lasted approximately five months.
The project area.
The upgrade will ensure all streetlights continue to work properly and safely to meet current safety guidelines. This work is one of several strategic investments by City Light to improve customers’ experience and meet customer’s electricity needs while also efficiently managing the energy system. The project also consisted of improvements to sidewalks and ADA curb ramps.
Seattle City Light is the 10th largest public electric utility in the United States. It has some of the lowest cost customer rates of any urban utility, providing reliable, renewable and environmentally responsible power to about 750,000 Seattle area residents. City Light has been greenhouse gas neutral since 2005, the first electric utility in the nation to achieve that distinction.