Amends the Public Utility Regulatory Policies Act of 1978 to prescribe requirements for a Federal Renewable Portfolio Standard for calendar years 2010 through 2039. Specifies a schedule of graduated annual percentages of a supplier's base amount that shall be generated from renewable energy resources, from 1% in 2010 up to 20 % in 2020 and thereafter.
Authorizes a retail electric supplier to satisfy such requirements through submission of renewable energy credits to the Secretary of Energy. Provides for energy credit trading or borrowing among suppliers.
Directs the Secretary to: (1) encourage federally-owned utilities, municipally-owned utilities, and rural electric cooperatives that sell electric energy to electric consumers for purposes other than resale to participate in the renewable portfolio standard program; and (2) establish by December 31, 2009, a state renewable energy account program.