According to the Wall Street Journal, a recent study found that half of the nation's non-residential buildings will be green by 2015.  This number includes both new construction and renovations, and indicates a large jump from the 15 percent of buildings that are currently considered green. 

The study, released in November, uses LEED standards as a measure to determine what would qualify as a green building, however buildings would not have to achieve LEED certification to qualify as 'green;' they must only adhere to LEED standards. 

For the complete Wall Street Journal article, please click here.