Entergy Corporation is an integrated energy company engaged, primarily, in electric power production, retail distribution operations, energy marketing and trading and gas transportation. The company owns and operates power plants with around 30,000 megawatts of electric generating capacity and is the second-largest nuclear generator in the United States. The group also owns 50% of Entergy-Koch, through which it provides wholesale energy marketing and trading services, as well as the operation of natural gas pipeline and storage facilities.