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Public Works is currently upgrading and retrofitting 478 new LED street light fixtures throughout the community. The project consists of replacing the existing 175 watt High Pressure Sodium (HPS) bulbs with an energy efficient 60 watt LED fixtures.
This upgrade will provide increased visibility for motorists driving through residential communities at night and will save an estimated $35,000 in electrical usage and maintenance costs annually.
The new lights improve cost savings, use less energy, provide increased visibility, and decrease light pollution by directing light down toward the ground, illuminating sidewalks and roadways. The new lights will utilize warm white light, which is warm of neutral and rated 4,000 K on the Color Temperature Scale, resulting in increased visibility. Warm white was selected as a warm compromise between bright blue tones and the existing orange hue.
The light improvements are part of the Village’s Sustainability Framework, which aims to reduce electricity and natural gas consumption for all Village facilities and operations, and to promote available programs to assist private properties. As such, the Village has advanced a number of projects that produce a triple bottom line benefit for social, environmental and financial improvements. This project was reviewed by the Public Works and Environmental Concerns Committee and approved by the Village Board of Trustees. The light upgrades are also compliant with the Village’s Street Lighting Policy, which was amended in December 2016 to make LED fixtures the standard for replacement of existing lights.
The total cost of the project is $215,100.00, which was offset by a grant from ComEd’s Energy Efficiency Program in the amount of $51,863.00. Based on estimated energy and maintenance savings, the Village’s investment in this project ($163,237) will show a return in 4.65 years.
The new lights provide the same illumination radius as the old lights, however may appear to be brighter due to the upgrades. The new light design reduces the amount of spillover effect and is compliant with the Dark Sky Initiative, working to decrease light pollution in urban areas.
Village staff understands that the upgrades create a noticeable visual difference; however the new lights do not have a greater illumination radius than the old lights. In response to the concerns and comments, the Village has determined that specific lamp locations will receive frosted glass, to soften the light pattern. The Village will also install house-side shields on an as-needed basis.
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