NRG

Nrg Energy, Inc

A Houston-based power company that both generates electricity and sells it to homes and businesses. It owns power plants fueled by natural gas, coal, nuclear, and renewables, and sells retail electricity under familiar brands like Reliant, Green Mountain Energy, and Direct Energy. The company began in 1989 as the power-generation arm of Northern States Power (now Xcel Energy) and became independent in 2000. Its name is simply a phonetic spelling of "energy" — N-R-G.