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

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

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

NorthWestern shareholders will receive 0.98 shares of Black Hills for each held. Black Hills stockholders would own roughly ...

It has been 150 years since miners first flocked to South Dakota's Black Hills in a gold rush that displaced Native Americans ...

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

Northwestern Energy has announced a significant merger with South Dakota's Black Hills Corp, leading MTN's John to examine ...

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

Black Hills Corp. and NorthWestern Energy announced Tuesday an agreement to merge in an all-stock, tax-free transaction ...

Black Hills upgraded at Bank of America, which believes its strategic positioning following the merger with NorthWestern Energy is an improvement over the standalone company.

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

Energy President and CEO Linn Evans has announced that the Rapid City-headquartered utility company intends to merge with ...