A public utility as defined in 69-3-101 may acquire by eminent domain any interest in property, as provided in Title 70, chapter 30, for a public use authorized by law to provide service to the customers of its regulated service.
Mont. Code Ann. § 69-3-113, under Role of Commission and Power of Eminent Domain.
Mont. Code Ann. § 69-3-113
A public utility as defined in 69-3-101 may acquire by eminent domain any interest in property, as provided in Title 70, chapter 30, for a public use authorized by law to provide service to the customers of its regulated service.