SolarWorld Corp. solar panels sit at the Heartland Power Cooperative solar array in St. Ansgar, Iowa, U.S., on Friday, Jan. 23, 2015. Heartland Power Cooperative, one of over 900 electric cooperatives in the United States, serves 5,200 members in northeast Iowa. The solar project will be comprised of 2,706 315-watt solar panels made by SolarWorld Corp., capable of generating approximately 852 kW of electricity. Photographer: Daniel Acker/Bloomberg *** Local Caption *** Dahlton Felix