Aworkerinstallssolarpanels in front of wind turbines at a photovoltaicpower stationin Yiyangcounty, Luoyang city, central China's Henan province, January19, 2016.
Such a grid is being tested at the army's model forward operating base (FOB) in Fort Irwin, California, along with prototypes of a mobile, hybrid powerstation that combines solar panels and wind turbines with a conventional generator.
This week EDF Renewable Energy officially unveiled the 140-megawatt Pacific Wind farm in the Tehachapi-Mojave region of Southern California and the nearby 143-megawatt Catalina solarpowerstation.