sentences:  However, on June 8, 2001, Nevada Governor Kenny Guinn signed SB 372, at the time the country's most aggressive renewable portfolio standard.The law requires that 15 percent of all electricity generated in Nevada be derived from new renewables by the year 2013.The 2001, revision to the RPS keeps in place Nevada's commitment to expand solar energy resources by requiring that at least 5 percent of the renewable energy projects must generate electricity from solar energy.