Tecta Solar, a division of Tecta America, has completed the installation of a 406kW peak solar photovoltaic (PV) energy system on the roof of the Administrative Center at GlaxoSmithKline's (GSK's) campus in the US state of Pennsylvania.

The installation of the solar energy system in Upper Providence was financed, in part, by a $500,000 grant from the Commonwealth of Pennsylvania, Commonwealth Financing Authority.

The solar PV system annually provides an estimated 515 Pennsylvania Solar Alternative Energy Credits (515MWh), which are equivalent to the power that 50 Pennsylvania homes consume annually.

The roof has 1,848 solar modules that have been installed with a ballasted roof system and produces annual environmental offsets of approximately 897 pounds of nitrogen oxide; 4,287 pounds of sulfur dioxide, and 626,753 pounds of carbon dioxide, the company said.