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

(a) Requirement. The President, acting through the Secretary, must try to make sure that, as far as it's economically and technically doable, part of all the electricity the federal government uses each year comes from renewable energy: (1) at least 3 percent in fiscal years 2007 through 2009; (2) at least 5 percent in fiscal years 2010 through 2012; and (3) at least 7.5 percent in fiscal year 2013 and every year after that. (b) Definitions. (1) Biomass: this means certain nonhazardous lignin waste material, and nonhazardous cellulosic material that comes from (A) forest sources like mill residues, precommercial thinnings, slash, brush, and other nonmerchantable material; (B) solid wood waste like waste pallets, crates, dunnage, and construction wood waste (but not pressure-treated, chemically-treated, or painted wood, and not municipal garbage, landfill gas, or commonly recycled paper); (C) farm waste like crop by-products, residues, and livestock waste; or (D) a plant grown only to be burned for electricity. (2) Renewable energy: this means marine energy (as defined in section 17211), or electricity from solar, wind, biomass, landfill gas, geothermal, municipal solid waste, or new hydroelectric capacity added at an existing hydroelectric project. (c) Calculation. (1) In general: renewable energy counts double toward this requirement if (A) it's made and used on-site at a federal facility, (B) it's made on federal land and used at a federal facility, or (C) it's made on Indian land and used at a federal facility. (2) Separate calculation: (A) energy that's avoided by using geothermal energy also counts as renewable energy produced; but (B) that avoided energy cannot also be counted as "energy efficiency" toward separate federal energy efficiency goals, targets, or incentives. (d) Report. By April 15, 2007, and every 2 years after that, the Secretary must report to Congress on the federal government's progress toward these goals.