NorthWestern Corp. (Sioux Falls, SD), parent of Blue Dot, reports second- quarter earnings of $0.26 per share, or $6 million, compared to $0.22 per share, or $5.1 million, for the same quarter last year. Revenue increased to $1.6 billion compared to $596 million in the prior year, reflecting substantial growth in the company’s communications and wholesale energy sectors.