Despite the prolonged recession, the number of LEED-registered projects in Colorado continued to grow in 2008 and 2009. During the six-month period from January through June in 2008 and during 2009, LEED NC-registered projects increased by 107%, and LEED EB and LEED EBOM projects increased by 81%. Photo: Urban Villages Inc. The roof of the Sugar Cube building, adjacent to the historic Sugar Building, contains an 18.9 kW solar PV array designed and installed by SolSource of Denver. “The existing building stock in the U.S. offers an enormous opportunity for green building and our ability to positively impact the environment,”