Seattle City Light and its contractor, Potelco, have completed about two-thirds of the LED streetlight conversions planned for 2012. 
Installing an LED streetlight.
Seattle City Light and its contractor, Potelco, have completed about two-thirds of the LED streetlight conversions planned for 2012.
Crews from City Light and Potelco have installed 7,686 of the nearly 12,000 LED streetlights planned to go into service this year. These lights are being installed in residential neighborhoods from the south end of Seattle City Light’s service territory in Burien, Tukwila, SeaTac, Renton, Normandy Park and unincorporated King County north to Brandon Street in Seattle.
LED streetlights use up to 60 percent less energy than the high-pressure sodium lights they are replacing and they last at least three times longer. That means greater reliability of service and significantly lower operations and maintenance costs.
The City of Seattle is already saving $1.2 million annually by using LEDs on some residential streets and expects savings of $2.4 million when all residential streets have been converted by the end of 2014.
LED streetlights also provide better visibility for drivers, pedestrians and bicyclists. City Light is installing lights that are similar in color to moonlight, which provides truer color representation, greater depth of field and enhanced peripheral vision compared to the old lights.