NRG Energy is one of the largest retail energy providers in the U.S., with 7 million customers, including its 2021 acquisition of Direct Energy. It also is one of the largest U.S. independent power producers, with 16 gigawatts of nuclear, coal, gas, and oil power generation capacity primarily in Texas. Since 2018, NRG has divested its 47% stake in NRG Yield, among other renewable energy and conventional generation investments. NRG exited Chapter 11 bankruptcy as a stand-alone entity in December 2003.