NRG(NRG) - 2018 Q4 - Annual Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K Commission file No. 001-15891 NRG Energy, Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 41-1724239 (I.R.S. Employer Identification No.) 804 Carnegie Center, Princeton, New Jersey (Address of principal executive offices) (609) 524-4500 (Registrant's telephone number, including area code) Securities registered pursuant to Section 12(b) of the A ...