Innovation in transportation:
Pooling cars and solar energy at I-96 and
East Beltline Avenue
Contact:
John Richard, MDOT Office of Communications, 616-451-4063
Agency:
Transportation
Fast Facts:
- Michigan's first solar-powered interchange lights.
- Partners include U.S. Department of Energy and the Pure Michigan Energy Office.
- The system will reduce carbon dioxide emissions by approximately 80.6 tons per year.
January 25, 2012 -- The Michigan Department of Transportation (MDOT), in partnership with the Pure Michigan Energy Office, is using a $650,000 U.S. Department of Energy grant to install alternative energy technology in the city of Grand Rapids at the I-96/M-44 (East Beltline Avenue) interchange. This technology will be the first of its kind installed in Michigan.
The innovative project, underway and anticipated to be operational this spring, involves placing solar panels above selected parking spaces within an existing MDOT carpool lot. These solar arrays will feed power directly into the electrical grid during the day and offset the power needed for the freeway interchange lights at night.
A process called "net metering" will eliminate the need to purchase and maintain batteries for the system since the power meter will essentially spin backwards during the day. The elevated photovoltaic arrays also will provide approximately 45 covered and LED-illuminated parking spaces.
"The goal of this green project is to demonstrate how alternative energy technology can reduce MDOT's future operating costs and greenhouse gas emissions," said State Transportation Director Kirk T. Steudle. "Solar-powered lighting will help keep this lot and interchange lit, and improve safety for motorists."
Real-time data will be posted online showing current and historical energy generation information. The system is expected to produce approximately 106,000 kilowatt-hours per year,resulting in an estimated annual energy savings of $13,500. In addition, revenue from Solar Renewable Energy Credits will help to further offset the cost of the system. The green energy that this system will produce is the equivalent of reducing carbon dioxide emissions by approximately 80.6 tons per year, or roughly 9,047 gallons of gasoline. (See attached infographic)
The project is being designed and constructed entirely by Michigan-based companies, with most of the suppliers being from Michigan as well. The solar panels have a 25-year warranty.
MDOT reminds drivers: Snowplows need room to groom.
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