Fact sheet describes how the U.S. Department of Commerce National Institute of Standards and Technology (NIST) installed a 5 MW-DC photovoltaic system at its Gaithersburg, Maryland, campus under an energy savings performance contract energy sales agreement (ESPC ESA). The project was implemented using the U.S. Department of Energy ESPC ENABLE contract vehicle. NIST pursued this project to demonstrate leadership in renewable energy while reducing energy costs and contributing to the federal government’s renewable electricity requirement established in the Energy Policy Act of 2005.