Black Hills Energy has announced it will be merging with Midwest-based Northwestern Energy to form a large $7.8 billion ...

Dow Jones Top Company Headlines at 9 PM ET: Activist Ancora Pressures Railroad Operator CSX to Explore Deal | Google ... The hedge fund, which had also agitated at Norfolk Southern, is prepared to ...

Northwestern is planning to combine with Black Hill Corporation to create at $15.4 billion electric and natural gas utility.