PNC Financial Services Group cut the ribbon on its new, environmentally friendly headquarters in Pittsburgh.

Named The Tower at PNC Plaza, the building is 33 stories tall and will host roughly 2,200 employees in 800,000 square feet of space. The building has received LEED platinum certification and was designed with the goal of being the "greenest office tower in the world," the $354 billion-asset PNC said in an Oct. 1 news release.

The new headquarters is expected to consume 50% less energy and 77% less water than typical office buildings.

The building has a double-skin façade, a window system with two panes of glass designed to provide insulation and control the interior temperature. PNC's new home also includes a solar chimney, which carries warm air through two vertical shafts at the center of the building to keep it warm.

Other environmentally oriented features include blinds with automatic controls and a water recycling and treatment system.

"From a resource conservation, operational efficiency and workplace satisfaction perspective, green building makes good business sense," PNC director of corporate real estate Gary Saulson said in the release.