The solar array developed by the Clean Energy Collective at the Marshall Landfill in Boulder, CO, is the first in the nation to be located at a Superfund site. The 2,000 solar panel facility is part of Xcel Energy’s Solar Rewards Community Program, which gives its customers a chance to buy solar panels and receive credits on their bills for the power produced. This project was supported by the EPA’s RE-Powering Brownfields program, which is critical to the development of renewables on former land liabilities, such as landfills, coalfields or other formerly toxic sites.