91ÊÓƵ

The latest Green Building Adoption Index study has ranked Portland no. 16 in the nation for percentage of green certified office space. The study, by Maastricht University and commercial real estate company CBRE, ranks the top 30 U.S. markets.

Portland climbed two spots from last year; this was the fourth annual study. It found that 6.43 percent of Portland’s buildings have achieved Energy Star status. Also, the city had the 13th highest percentage of Leadership in Energy and Environmental Design-rated buildings at 3.76 percent.

In the country’s top 30 markets, 10.3 percent of all buildings surveyed are Energy Star labeled, while 4.7 percent have LEED ratings.

Much of the information came from city sources. Portland passed a Commercial Building Energy Performance Reporting ordinance in 2015. The ordinance requires owners of nonresidential commercial buildings with at least 20,000 square feet to report energy use on an annual basis. Nine of the nation’s 10 largest metro areas in the study have such reporting laws.

Chicago, San Francisco, Atlanta, Houston and Minneapolis/St. Paul took the top five spots in the study.