Although this blog mainly focuses on energy efficient homes, it's also important to consider the efforts that businesses across the United States are making to reduce their carbon footprint. On March 12, the Environmental Protection Agency (EPA) published a press release revealing the top 10 U.S. cities with the most Energy Star-certified buildings in 2012.

For the fifth year in a row, Los Angeles came in at the top of the list with 528 facilities. Next up were Washington D.C. with 462 and Chicago with 353. 

According to the EPA, commercial electricity use makes up 17 percent of U.S. greenhouse gas emissions, costing at least $100 billion each year. But, thanks to the efforts of 20,000 Energy Star certified buildings in 2012, utility bills were slashed by more than $2.7 million. 

For a business to earn an Energy Star rating, it must perform in the top 25 percent of similar commercial entities across the nation. EPA data reveals that these buildings typically use an average of 35 percent less power than average facilities. 

"Through their partnership with EPA, the owners and managers of Energy Star-certified buildings are helping reduce greenhouse gas emissions while saving on utility bills," EPA acting administrator Bob Perciasepe said in the agency's press release. "With Energy Star, cities across America are helping achieve President Obama's goal to cut in half the energy wasted by our businesses over the next 20 years."

It's always encouraging to see businesses and organizations investing in sustainable technology. If you're interested in upgrading to an energy-efficient residence, contact a home inspection contractor. They'll perform an energy audit and help you determine where to get started.