Astrum Solar and The Tower Companies have commissioned a solar photovoltaic (PV) system on the roof of the Millennium Building (pictured), located at 1909 K Street NW in the US capital.

This project is the first PV installation on a large, commercial, class-A office building in Washington DC, its backers say.

Maryland-based Astrum designed and installed the 30 kW PV installation, which includes 109 modules with an estimated annual production of nearly 40 MWh.

‘It’s encouraging to see solar catching on for commercial uses,’ said Sandy Roskes, Chief Sales Officer of Astrum Solar.