Portland dropped three spots on a list ranking cities by the number of energy-efficient buildings in town.

The city is No. 15 on the 2010 US Environmental Protection Agency ranking of metropolitan areas, with 114 Energy Star-rated buildings last year, comprising some 19 million square feet of space.

Portland had 80 Energy Star buildings in 2009, when it ranked 12th on the EPA list.

Los Angeles tops the list with 510 “Energy Star” buildings in 2010. LA has been No. 1 for energy efficient buildings since the EPA began compiling the list three years ago.

Coming in second was Washington D.C., with 301 buildings, followed by San Francisco with 248, Chicago with 232 and New York with 211.

Seattle ranked just behind Portland at No. 16, with 105 Energy Star buildings.