Interior Sec. Sally Jewell And Sen. Reid Announce Plans For Nat'l Clean Energy Summit

LAS VEGAS, NV - JULY 02: An artist's rendering shows solar panels on the roof of the Mandalay Bay Convention Center during a news conference announcing MGM Resorts International's planned installation of the world's second largest rooftop solar photovoltaic array on July 2, 2013 in Las Vegas, Nevada. The 6.2-megawatt array will use 20,000 solar panels to cover about 20 acres of the convention center's roof and will provide 20 percent of the resort's energy needs. It was also announced that the National Clean Energy Summit 6.0 will be held at the resort on August 13, 2013, and will focus on the future of clean energy. (Photo by Ethan Miller/Getty Images)