Black Hills (NYSE:BKH) reported quarterly earnings of $1.79 per share which missed the analyst consensus estimate of $1.84 by 2.72 percent. This is a 4.28 percent decrease over earnings of $1.87 per share from the same period last year. The company reported quarterly sales of $780.700 million which missed the analyst consensus estimate of $903.890 million by 13.63 percent. This is a 3.04 percent decrease over sales of $805.200 million the same period last year.