Street lighting technology is evolving rapidly and is tracked by the U.S. DOE's Municipal Solid-State Street Lighting Consortium which offers a variety of resources, such as performance calculators and model specifications, to guide municipalities and others in their evaluation and choice of LED street lighting products, which importantly includes the choice of color temperature (3000 or fewer degrees Kelvin generally preferred) and color rendition. See MN Dept. of Transportation LED specifications.
LED outdoor lighting: barriers and solutions free-to-view webinar recorded in Jan 2017 features a U.S. DOE Policy Advisor discussing municipality-focused LED outdoor lighting conversion best practices and strategies based on real-world examples. [Applicable to 2 and 3 Star implementation.]
The city's Energy Improvement Project (#894) with McKinstry included replacement of all traffic signals and street lights with LED lights. Xylon Avenue streetscape improvements included LED lighting for all fixtures with the capability of controlling output levels electronically. All traffic signals have been converted to LED lighting.
Street lighting is currently high pressure sodium but it is common practice to replace bad ballasts with LEDs. Xcel Energy doesn't meter it; instead, the City pays a per fixture fee. The City partnered with students from the U of M to conduct an energy audit of its streetlight system. The study recommended LED lights and the installation of solar panels on the streetlights to further reduce energy usage, energy costs and carbon emissions.
272 LED street lights have been installed in the City, almost 11% of total street lighting.
The city of Rochester, Minnesota, is poised to initiate a significant LED streetlight installation project on city roadways. The proposed project is intended to replace up to 300 to 400 existing 175 watt mercury vapor streetlights with LED streetlight fixtures. The project is funded by an award of $180,000 from the US Department of Energys Energy Efficiency and Conservation Block Grant (EECBG) program combined with a 20% funding match from the municipal utility, Rochester Public Utility (RPU). RPU has budgeted a total of approximately $225,000 in funds for the purchase and installation of the new LED streetlights.
All street lights have been converted to LED EnergyStar compliant lights. New traffic signals are LED. The City doe snot require Dark-sky compliance but considers it when replacements are needed. The lights on the City's current contract are energy star rated.
The street lights are transitioning over to LED lights. Last year, in Stillwater, over 600 lights were switched to LED, and currently around 50% of its streetlights are LED lights. In addition, the city only owns one traffic light and that has been switched over to LED.
According to David Opsahl, Energy Services, Willmar Municipal Utilities. It is the practice of the WMUC that all new street lighting is to be dark sky compliant and all traffic signals are to be Energy Star rated.
Constructed new traffic signals at intersection of LaPrairie Ave and Highway 169. The signals are powered with LED lights and are electronically operated to reduce idling time. Turn signals have a yellow arrow.
Installed 16 new street lights on a corridor street that is 1 mile long. The new lights are LED and “Dark Sky” compliant.
For more information contact:
Partners: City of Grand Rapids, City of LaPrairie, Itasca County, Itasca Community College, IIIRB
The City owns the ornamental street light systems along Silver Lake Road and Old Highway 8. For some of the lights that are unmetered, the City has a maintenance contract with Xcel Energy to service the electrical portion of the lighting system. However, for the lights that are metered the City is responsible for re-lamping, inspection, and maintenance.
The City owns and maintains two street light systems - 95 street lights on Silver Lake Road North and 58 street lights on 5th Avenue NW from 1st Street NW to Old Highway 8. They were originally installed on Silver Lake Road in two phases – 2001 and 2004. The street lights on 5th Avenue NW were installed in 1999. These lights were completely re-lamped in 2008.
The City also owns 30 street lights on Norwest Parkway (NWQ) installed in 2007 and 44 street lights north of I694 along Old Highway 8 installed in 2008, and several lights by Pulte in 2015. The 2007 street lights were due for their first re-lamping in 2015.
All of these lights contain high pressure sodium (HPS) lamps that have an average operating life of 24,000 service hours. On average, 50 percent of the street lights will be burned out or cycling after 6.5 years of operation. During the 2015 Street Rehabilitation project 35 existing luminaires on 10th Street were retrofitted with LED fixtures and 11 new LED lights were installed. To provide for a longer service life, all of the decorative luminaires in the City will eventually be replaced with LED fixtures.
2016 Re-lamp 49 Old Highway 8 Lights north of 5th Avenue
2016 Re-lamp 67 Silver Lake Road Lights south of 694
2018 Re-lamp 58 5th Avenue NW Lights south of Old 8 to 1st Street
2020 Re-lamp 102 Lights North of 694 in the Exchange
The ornamental lights are a large investment, and need to be maintained and kept in good working order. LED lights are efficient and will significantly outlast the HPS lamps. LED lights installed on metered systems will have their energy use compared to previous years utility data.
The City uses downward directed, sodium vapor street lighting. Section 24.268 of the municipal code states that lighting in parking lots must be downward facing. The purpose of this section includes preventing “unnecessary skyglow.”
The City of Fergus Falls has completed a transformation of all of our traffic signals lights to LED lighting and are considering a similar conversion with our street lighting. The street lights around Lake Alice are being considered for LED conversion and the new street lights that will be installed this fall at the former Regional Treatment Center will be LED lights.
In early 2019, the City of Sherburn replaced the street lights located in our downtown to LED lights. The number of lights that were replaced were ten poles. In addition, all other streets are being replaced with LED as they burn out.
Xcel Energy owns the street lights and traffic signals in the City of Wyoming. They have purchased LEDs and replaced the street lights and traffic signals with them. It is anticipated they will continue to do so in the future.