LED street lamps deliver 88% power saving in Japan

The cost and energy-efficiency of solid-state lighting are driving many new applications, and the recent installation of the first LED street lights in Osaka Prefecture in Japan, has already been found to provide an overall savings of 88% in electricity bills over the older high-pressure mercury lamps used elsewhere in the region. Each of the LED-based street lamps installed at a park on the Kizu River utilizes 36 cool white LEDs. The LED array generates 30 lux at a pole height of 4.5 meters, comparable to the brightness of mercury lamps, while using just 25 W of power per fixture.

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