Black Hills Energy Corp. announced it will merge with NorthWestern Energy Group, pending regulatory approval. Black Hills ...

Black Hills Corp., Lincoln's natural gas provider, announced Tuesday it is planning to merge with another regional natural ...

Miners want to return to the treasured landscape, promising an economic boost while raising fears of how modern gold ...

NorthWestern Energy replaced the mighty Montana Power Co. in 1997, which was headquartered in Butte for decades.

The utility will have a market capitalization of approximately $7.8 billion, based on each company’s closing stock price as ...

The Black Hills Clean Water Alliance says that could mean long-term damage to the environment and tourism. But the effort ...

NorthWestern Energy Group and Black Hills have agreed to combine to form a large $7.8 billion regulated electric and natural ...

Black Hills and NorthWestern Energy said on Tuesday they would merge, creating a $15.4 billion regulated electric and natural ...

Black Hills and NorthWestern Energy have entered a definitive agreement that will establish a electric and natural gas ...

An agreed-to merger of Black Hills Energy and NorthWestern Energy is not expected to lower rates in Pueblo. Layoffs could ...

Black Hills Corp. and NorthWestern Energy have agreed to merge in an all-stock, tax-free deal that will create a $15.4 ...

Black Hills and NorthWestern Energy will merge in an all-stock deal to form a utility provider serving 2.1 million customers ...