The Parker Ranch installation in Hawaii. Photo by the U.S. Department of Energy.

Earlier this month, Smart Growth America released Federal Involvement in Real Estate, a survey of over 50 federal programs that influence real estate in some way. This post is the second in a series taking a closer look at some of the programs included in that survey. Today’s post is about Qualified Energy Conservation Bonds .

Qualified Energy Conservation Bonds (QECBs) give state and local governments a low-cost financing option to encourage energy conservation.

Funding from the program has been used to retrofit public buildings, to power buildings with renewable energy, and to improve public transit infrastructure. Authorized by Congress as part of the 2008 Energy Improvement and Extension Act, the original legislation allocated $800 million in federal funding to the effort and has since been increased to $3.2 billion as a result of the 2009 American Recovery and Reinvestment Act. As of July 2012, about $760 million in allocated funding had been spent. Because QECBs do not have to be spent within a certain time period, a great deal remains untapped.