NRG Energy (NYSE:NRG) reported quarterly earnings of $1.49 per share which missed the analyst consensus estimate of $1.72 by 13.37 percent. This is a 11.31 percent decrease over earnings of $1.68 per share from the same period last year. The company reported quarterly sales of $7.481 billion which beat the analyst consensus estimate of $7.312 billion by 2.31 percent. This is a 10.99 percent increase over sales of $6.740 billion the same period last year.