Reportedly, Seattle City Light (SCL) has started to the old high-pressure sodium streetlamps with new LED lights in Shoreline and Lake Forest Park on Sept. 20. The newer LED technology uses approximately 48 percent less energy than current high-pressure sodium lights, and they are expected to last at least three times as long. The project cost, which was originally estimated at between $25-24 million, has dropped in the last year to $20 million for all 41,000 residential street lamps. A small portion of this cost will be covered by federal stimulus funds and SLC w...