Photos: The world's largest solar arrays

Nellis Solar Power Plant

The Nellis Solar Power Plant at the Nellis Air Force Base in Clark County, Nevada, just northeast of Las Vegas, has about 70,000 solar panels that occupy 140 acres. It is said to be the second largest photovoltaic array in the US, generating 25 gigawatt hours of electricity every year. That supports about a quarter of the power used at the base.

Image: US Air Force

By Lyndsey Gilpin

Lyndsey Gilpin is a former Staff Writer for TechRepublic, covering sustainability and entrepreneurship. She's co-author of the book Follow the Geeks.