Black Hills (NYSE:BKH) reported quarterly earnings of $1.87 per share which missed the analyst consensus estimate of $1.93 by 3.11 percent. This is unchanged from the same period last year. The company reported quarterly sales of $805.20 million which beat the analyst consensus estimate of $706.08 million by 14.04 percent. This is a 10.85 percent increase over sales of $726.40 million the same period last year.