Duke Energy Back to Search Duke Energy Categories Utilities 1000 E. Main St , Plainfield , IN , 46168 (800) 521-2232 http://www.duke-energy.com/ Member News Information on rising fuel costs and Duke Energy electric bills CHANGES COMING TO IMPROVE THE CUSTOMER EXPERIENCE Duke Energy request to reduce fuel electric rate approved by Indiana regulators Share × Print Email Facebook LinkedIn Twitter Pinterest Powered By GrowthZone