[PR Newswire] – CHARLOTTE, N.C., Dec. 1, 2014 /PRNewswire/ — Before you deck the halls and transform your home into a festival of lights, calculate how your twinkling holiday displays will affect your . . . → Read More: Market Update: Duke Energy Corp (NYSE:DUK) – Duke Energy offers holiday lighting energy calculator and winter tips to help save energy and money Similar Articles: Company Update (NYSE:DUK): Duke Energy bill assistance programs help families stay warm during winter Market Update (NYSE:DUK): Duke Energy reinforces commitment to responsibly providing clean, reliable energy Market Update: Duke Energy Corp (NYSE:DUK) – Duke Energy helps customers take a bite out of ‘energy vampires’ with tips, new ‘Energy Slayer’ calculator