Photovoltaic panels stand near electricity pylons in the Sishen solar park, operated by Acciona SA, in Kathu, Northern Cape, South Africa, on Tuesday, June 2, 2015. South Africa, which has implemented rolling blackouts this year as electricity demand exceeds supply, is running a five-round program of tenders to tap new sources of energy and encourage more private companies to build power projects. Photographer: Waldo Swiegers/Bloomberg via Getty Images