NRG Energy, Inc. (NRG) is an integrated power company. The Company is engaged in producing, selling and delivering electricity and related products and services in various markets in the United States. The Company's segments include Generation, Retail, Renewables, NRG Yield, Inc. (NRG Yield) and Corporate activities. The Generation segment includes generation, international and Boston Energy Trading and Marketing LLC (BETM). The Retail segment includes Mass customers and Business Solutions. Its Business Solutions include commercial, industrial and governmental/institutional (C&I) customers, and other distributed and reliability products. The Renewables segment includes solar and wind assets. The NRG Yield segment includes certain of the Company's contracted generation assets. The corporate activities segment includes residential solar and electric vehicle services. The Company owned and operated approximately 47,000 megawatts (MW) of generation, as of December 31, 2016.