Sean Anthony Eddy NorthWestern Energy Group, Inc. (NASDAQ:NWE) is a regulated electric and natural gas utility that operates primarily in the U.S. states of Montana, South Dakota, and Nebraska. The company also provides utility services to Yellowstone National Park in Wyoming:   Northwestern Energy These are, almost certainly, not the areas that immediately come to mind for many people when they are thinking about a utility investment. After all, Montana and South Dakota are some of the most rural areas ...