The U.S. Department of Energy (DOE) launched the Builders Challenge on February 14, 2008, calling on the U.S. homebuilding industry to build 220,000 high-performance, energy efficient homes by 2012. The voluntary programme also aims for 1.3 million of these high-performance homes to be built by 2030. IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]