Duke Energy Corporation is an energy company. Duke Energy conducts its operations in three business segments: Regulated Utilities, International Energy and Commercial Power. The Company's Regulated Utilities segment conducts operations primarily through Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida, Duke Energy Indiana and Duke Energy Ohio. The Company's International Energy segment principally operates and manages power generation facilities and engages in sales and marketing of electric power, natural gas, and natural gas liquids outside the United States. The Company's Commercial Power builds, develops and operates wind and solar renewable generation and energy transmission projects throughout the continental United States. Duke Energy operates in the United States and Latin America primarily through its direct and indirect subsidiaries.