Between 2006-2010 we received rebates from Xcel Energy to change over our traffic signal bulbs from
incandescent to LED. We have realized over a 50% savings in energy costs and Xcel picked up most of the
cost of the LED bulbs. Approximate energy savings cost per year-$50k.
Currently, all traffic signals are LED within Cottage Grove. Yellow was done in 2010, red done in 2011, and green done in 2012. Cross walks that have not already been replaced with LED lighting will be done in 2013.
The City, working in conjunction with MnDOT, Wright County, and Delano Municipal Utility, completed a project to replace all of the traffic signals in the community with energy-efficient LED lighting. The project was initiated in 2008 and completed by the fall of 2009.
In 2004 and 2005, the majority of Duluth’s green traffic signals were replaced with high efficiency LED lights. As of June 2014, 95% of the City's traffic signals are LED.
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For more information contact:
Alex Jackson, Energy Coordinator (City staff) | ajackson@DuluthMN.gov | 218-730-4433
Replace all traffic signals with LEDS. The City of Granite Falls has one traffic signal located at the intersection of HWY 212/23. The city worked with MnDOT as part of an intersection upgrade project to now use LED lighting in the traffic signal.
100% of Mankato traffic lights have been converted to LED fixtures, saving approximately $50,000 annually and resulting in longer fixture life and less maaintenance issues. The conversion was undertaken city-wide starting in 2004.
Beginning in 2009 existing traffic signals were converted from incandescent bulbs to LED’s. Currently, all traffic signals have been converted to LED lighting technology.
Within New Ulm, there are nine intersections with traffic signal lights. At these locations there are 527 individual bulbs (Red, Amber, Green, Arrows, Pedestrian, Hand, etc.). All (100%) traffic lights were finished being converted to LED lighting
The City is responsible for maintenance of all of the traffic signals in the City, including those on County and State-owned roads. The City has replaced 100% of these signals with LED bulbs.
Traffic lights throughout Rochester were a mixture of old incandescent lights and newer, more
efficient LED lights. As part of a facility improvement project, a total of nearly 4,000 incandescent green,green arrow, yellow, yellow arrow and pedestrian walk/dont walk lamps were replaced with high-efficiency LED lights.
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Once these were all replaced, every traffic light in Rochester is now an LED light, which saves the city a vast amount of money each year.
The City of Royalton replaced the incandescant lights in our traffic light with LED lights. The incandescent bulbs were 150 watts and the new LED lights are 10 watts. The change in lights saves the city approximately $1000/year. The city has only one set of traffic lights so all traffic lights in the city are LEDs!!
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Replacing incandescant lamps with LED saved the city half the cost for operating per month. The City received a $2,000 rebate from MN Power to help pay for the new traffic lights.
All Greens, Reds, and Don’t Walks lights have been replaced with LEDs; many of the other indications are done or are in a conversion stage. All new installations are LEDs.
The City of West St Paul has 15 traffic signals within the city. All of them are on State or County roads, that have all had reconstruction projects within the past 10 years. All these signals have been converted to LED.
Xcel Energy has replaced all traffic signals in the City of Wyoming with LEDs. This was done in 2016 and 2017. Our existing agreement with Xcel is quite old and most likely does not address this issue, but the action has been completed.
All red and green city traffic signals have been replaced with LED lighting. Because yellow lights are only on for a few seconds it was not cost effective to change them at this time.
Bemidji contracts with MNDOT to maintain and operate all of the signals within the city boundaries. As you can see by the list below approximately 95% of all traffic signals within the city are outfitted with LED lamps.
About 57% of traffic bulbs in Golden Valley are LEDs (982 bulbs out of 1,708 bulbs). 41% of the state owned bulbs are LEDs (281 bulbs out of 685 bulbs) and about 52% of the county owned bulbs are LEDs (347 out of 669 bulbs). 100% of traffic bulbs that the City owns (354 bulbs) have been replaced with LEDs.
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In 2009, before traffic signals were replaced with LEDs, the City’s annual power consumption for traffic signals was 277,028 kWh. Since replacing traffic signal bulbs with LEDs in 2010, annual power consumption has dropped to 116,827 kWh in 2015 (a reduction of 160,201 kWh from 2009 levels).
Annual costs related to traffic signals have decreased as well. In 2009 operation of traffic signals cost the City $31,923.73. After replacing bulbs with LEDs in 2010-2011 traffic signals cost the City $17,542.50 (a reduction of $14,381.23 per year). In 2015 traffic signals cost the City $16,566.33.
All but one traffic signal has been replaced with LEDs. The plan is to replace the final traffic signal with an LED when the signal is in need of repair or other standard replacement timing.
For reasons of energy efficiency and longer service life, the state's traffic signals have switched from using incandescent bulb to light-emitting diodes (LEDs). This switch also led to the replacements of the traffic lights to LEDs in Saint Peter. LEDs produce less than half the heat as incandescent bulbs and do not emit as much heat into the atmosphere.
All of the traffic signals in Woodbury have LED lights for the red and green signals. Yellow lights are being replaced with LEDs as replacement is necessary.
Brainerd has relamped over 1/3 of the existing signal lights with LEDs, and has a policy of replacing most all existing signals with LED on their next scheduled maintenance.
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For more information contact:
Sarah Hayden Shaw (Community volunteer) | sjhaay@gmail.com | 218-760-6837
Coon Rapids is currently going through a LED retrofit of our entire streetlight system as we reconstruct neighborhoods (included in the project). Connexus Energy & Xcel Energy have already completed conversion of all their facilities in the City. Anoka County's standard for projects in the city includes replacing existing traffic signals with LEDs.
The City of Detroit Lakes is currently switching out to LED street lights and traffic signals. In new developments and as old street lights are replaced, LEDs are installed.
Hopkins is currently working on replacing traffic signals with energy efficient LED lighting. The City is working this into the budget for a Mainstreet signal conversion in 2012; with Mainstreet done, the City would be at 90%.
All of the traffic signals in New Brighton are owned/operated by Ramsey County or MnDOT. During the 2015 Street Reconstruction project, the City led the replacement of a Ramsey County signal with all LED lamps. Additionally the City installed a LED Rectangular Rapid Flash Beacon for a pedestrian crossing.
The City owns and maintains two signalized intersections in Robbinsdale. Of the two, one has been replaced with LEDs and the other will be converted to LED upon burnout.