September 23, 2009

The PNC Financial Services Group, Inc. unveiled the largest green wall in North America as an innovative way to make its headquarters building more energy-efficient.
The 2,380 sq. ft., soil-based wall - similar in size to a doubles tennis court - features a variety of regional plants grown into living art on the south-facing wall of One PNC Plaza at the corner of Fifth Avenue and Wood Street in downtown Pittsburgh.
It is estimated that each of the 602 panels, with 24 plants in each 2x2 sq. ft. space, will offset the carbon footprint of one person. The vertical garden, similar to a green roof, will help to cool the 30-story building. Preliminary studies show the south-facing living wall will be 25 percent cooler behind the wall than ambient temperatures. Click here for full story.