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During June of 2014, an industry leading solar panel array installation was completed on the roof of DAR Constitution Hall in Washington, D.C. The array, mounted on the rooftop of the Hall, is expected to produce 100,786 kWh of energy per year and will help offset the energy demand of DAR Headquarters.

The solar panel array on Constitution Hall is a standout because of the special challenges the building presents. Constitution Hall, built in 1929 and designed by renowned architect John Russell Pope, is a designated National Historic Landmark Building and therefore the building façade must adhere to certain regulations to preserve its historical integrity. Additionally, the surface area of Constitution Hall’s roof is smaller than thetype of buildings that typically have a solar array installations and it cannot withstand as much weight as newer buildings.

TenKsolar and Standard Solar, the companies DAR contracted for the project, were able to design and create a solution to meet the unique needs of this historic building. The solar panel array that now sits on the roof of Constitution Hall is in accordance with National Historic Landmark regulations because it is unable to be seen at street level and it contains more panels, while still being lighter weight, and produces more energy than an average solar array. The energy produced by the system saves the equivalent of 69.5 metric tons of carbon dioxide which is an annual offset equal to that of 57.1 acres of forest or a reduction of 7,820 gallons of gasoline consumed. You can follow along to see how much energy we are conserving in real time.

This solar panel installation is possible because of generous donations to the President General’s Project