Today, the U.S. Green Building Council announced its annual Top 10 States for LEED, the world's most widely used and recognized green building rating system. The per-capita list highlights states throughout the country that are making significant strides in sustainable building design, construction and transformation. LEED-certified spaces use less energy and water resources, save money for families, businesses and taxpayers, reduce carbon emissions, create jobs and establish a healthier environment for residents, workers and the larger community.

"Green construction is quickly outpacing conventional construction in the U.S.," said Rick Fedrizzi, CEO and founding chair of USGBC. "LEED has become an essential tool for the transformation of building design and construction. By recognizing these states excelling in the use of LEED, we are celebrating the green building professionals, architects, business, policy and community leaders who work tirelessly to design and develop innovative solutions toward a healthier, more sustainable future. LEED construction drives economic growth, creates jobs and makes communities greener."  

Now in its sixth year, the ranking looks at total square feet of LEED certified space per resident, based on U.S. Census data and includes commercial and institutional green building projects certified throughout 2015. Illinois retained its top national position for the third year in a row, with 161 LEED certifications representing 3.43 square feet of certified space per resident. Illinois and Colorado are the only two states to have made the list every year since 2010. 

A newcomer to the Top 10 list is Utah, illustrating how LEED is expanding beyond states with densely populated urban areas. And after a three-year hiatus, Texas, Washington and Nevada are again on the list.

A continued strong performance from Maryland and Virginia has reaffirmed the mid-Atlantic region, which includes Washington, D.C., as the epicenter of green building. While D.C. is not included in the list of top states due to its status as a federal territory, it is notable as it continues to lead the nation with 19.3 square feet of LEED space per resident certified in 2015.

This year's list has the highest average (2.47) per capita space LEED-certified among the to p10 states since 2010. Four of the six states included in the 2014 list increased the square feet of space they certified per resident in 2015 (Ill., Md., Mass. and Calif.).

The full ranking is as follows:

*Included in 2014 Top 10 States for LEED list
**Washington, D.C. is not ranked as it is a federal district, not a state

Notable projects certified in 2015's Top 10 States for LEED include:

• Illinois: Virgin Hotel Chicago; LEED Gold

• Maryland: Holy Cross Hospital in Germantown; LEED Gold

• Massachusetts: New Douglas Elementary School in Douglas; LEED Silver

• Washington: University of Washington Husky Stadium, the largest stadium, college or professional, in the Pacific Northwest, in Seattle; LEED Silver

• Colorado: North Colorado Springs Readiness Center home to the Colorado National Guard; LEED Platinum

• Nevada: Clark County Wetlands Park Nature Center in Las Vegas; LEED Gold

• California: Los Angeles Convention Center Recertification; LEED Gold

• Texas: The Treehouse at Memorial City, part eco office and part club house in Houston; LEED Platinum

• Virginia: Chesapeake Bay Foundation Virginia Environmental Center in Virginia Beach; LEED Platinum

• Utah: U.S. District Courthouse in Salt Lake City; LEED Gold

Collectively, 1,633 commercial and institutional projects became LEED certified within the Top 10 States for LEED in 2015, representing 274.9 million square feet of real estate. Worldwide, 4,837 projects were certified in 2015, representing 818.9 million square feet.