Duke Energy's solar power lab in Catawba County tests different types of collectors, arrays, and alignment mechanisms.
Duke Energy's solar power lab in Catawba County tests different types of collectors, arrays, and alignment mechanisms. JEFF WILLHELM jwillhelm@charlotteobserver.com
Duke Energy's solar power lab in Catawba County tests different types of collectors, arrays, and alignment mechanisms. JEFF WILLHELM jwillhelm@charlotteobserver.com

Duke Energy unit completes 4 N.C. solar farms

September 09, 2015 09:58 AM