NorthWestern Energy Group, Inc. operates through two primary segments: electric utility operations and natural gas utility operations. The electric segment encompasses the generation, purchase, transmission, and distribution of electricity, utilizing a diverse energy mix that includes coal, hydro, wind, and natural gas. The natural gas segment handles the production, purchase, transmission, storage, and distribution of natural gas. The company holds a near-monopoly position in many regulated markets within Montana, which represents its largest customer concentration. In addition to its core utility services, NorthWestern Energy maintains an ongoing capital investment program focused on modernizing its transmission and distribution assets and expanding its regulated rate base.