Alliant Energy (NASDAQ:LNT) reported quarterly earnings of $0.65 per share which beat the analyst consensus estimate of $0.61 by 6.56 percent. This is a 4.41 percent decrease over earnings of $0.68 per share from the same period last year. The company reported quarterly sales of $971.000 million which beat the analyst consensus estimate of $896.938 million by 8.26 percent. This is a 1.04 percent increase over sales of $961.000 million the same period last year.