[PR Newswire] – INDIANAPOLIS, March 30, 2015 /PRNewswire/ — Can renewable energy be available when customers need it as opposed to only when the sun shines or wind blows? Storing energy from the . . . → Read More: Company Update: Duke Energy Corp (NYSE:DUK) – Indiana to take leadership role in energy storage technology Similar Articles: Company Update (NYSE:DUK): Duke Energy Carolinas’ customers set new all-time peak records for energy use Market Update: Duke Energy Corp (NYSE:DUK) – Duke Energy offers holiday lighting energy calculator and winter tips to help save energy and money Market Update (NYSE:DUK): Duke Energy reinforces commitment to responsibly providing clean, reliable energy