42 U.S.C. § 15852: Federal purchase requirement

Not less than 3 percent in fiscal years 2007 through 2009. Not less than 5 percent in fiscal years 2010 through 2012. Not less than 7.5 percent in fiscal year 2013 and each fiscal year thereafter. any of the following forest-related resources: mill residues, precommercial thinnings, slash, and brush, or nonmerchantable material; solid wood waste materials, including waste pallets, crates, dunnage, manufacturing and construction wood wastes (other than pressure-treated, chemically-treated, or painted wood wastes), and landscape or right-of-way tree trimmings, but not including municipal solid waste (garbage), gas derived from the biodegradation of solid waste, or paper that is commonly recycled; agriculture wastes, including orchard tree crops, vineyard, grain, legumes, sugar, and other crop by-products or residues, and livestock waste nutrients; or a plant that is grown exclusively as a fuel for the production of electricity. The term “renewable energy” means marine energy (as defined in section 17211 of this title ), or electric energy produced from solar, wind, biomass, landfill gas, geothermal, municipal solid waste, or new hydroelectric generation capacity achieved from increased efficiency or additions of new capacity at an existing hydroelectric project. the renewable energy is produced and used on-site at a Federal facility; the renewable energy is produced on Federal lands and used at a Federal facility; or the renewable energy is produced on Indian land as defined in title XXVI of the Energy Policy Act of 1992 ( 25 U.S.C. 3501 et seq.) and used at a Federal facility. For purposes of determining compliance with the requirement of this section, any energy consumption that is avoided through the use of geothermal energy shall be considered to be renewable energy produced. Energy consumption that is avoided through the use of geothermal energy that is considered to be renewable energy under this section shall not be considered energy efficiency for the purpose of compliance with Federal energy efficiency goals, targets, and incentives. Not later than April 15, 2007 , and every 2 years thereafter, the Secretary shall provide a report to Congress on the progress of the Federal Government in meeting the goals established by this section.