53 Danforth - Maine State Housing
ReVision Energy team securing one of the 21 Chromagen solar hot water flat plate collectors

53 Danforth Street, a Maine State Housing complex recently constructed in Portland, is utilizing the sun to preheat the domestic hot water for all of its 47 units.

21 Chromagen solar hot water collectors sit on the roof and heat an 820 gallon thermal storage tank. The preheat system design moves cold water into the thermal storage tank before it enters the existing indirect hot water tanks. The system, backed by natural gas, is designed to produce over 190 million Btu’s of clean, renewable energy each year.

The building’s owner and developer is The Szanton Company of Portland. Wright-Ryan Architects were the general contractors working on the construction of the building. The mechanical contractor, who we worked for on this project, is Southern Maine Plumbing and Heating.

Maine State Housing requires all their developers to at least consider solar thermal as an option for new construction. Maine State Housing Authority has been a leader in the adoption of renewable energy; in 2006 ReVision Energy installed a 10kW grid tied solar electric system on their office building in Augusta.

Maine State Housing Authority finances the installation of solar hot water applications in multifamily housing, such as this one, and is using the anticipated revenue from the sale of carbon emission reductions to subsidize the lower interest rate of the solar loan.

Maine State Housing also offers a residential loan for energy efficient upgrades including the installation of solar hot water or solar electric systems. Their low interest loan program is called the Home Energy Loan Program, or HELP loan. View their website to learn more. www.mainehousing.org

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