The Montana Power Company was formed on December 12, 1912, in Butte through the merger of the Butte Electric and Power Company with three of its subsidiaries: the Madison River Power Company, the Billings and Eastern Montana Power Company, and the Missoula River Power Company. A few months later, the two remaining large power producers in Montana, the Great Falls Water Power and Townsite Company, and the Thompson Falls Power Company, were taken into the company by acquisition of stock control. The properties owned by the formerly independent small companies included hydroelectric generating plants steam electric plants; many also had contracts to provide power for street railways, mills, and other interests. Montana Power Company continued to acquire companies after 1912, adding approximately fifty more companies by the early 1950s.

The company has since expanded into related businesses, including natural gas, oil, and coal, and providing telecommunications services. In 2000, it sold its generating and transmission assets in Montana and became Touch America, a telecommunications company.

From the finding aid for Montana Power Company Records 1892-1967 (Maureen and Mike Mansfield Library Archives and Special Collections)

The Montana Power Company was incorporated on December 12, 1912, as a result of a merger of the Butte Electric and Power Company, the Madison River Power Company, the United Missouri River Power Company, and the Billings and Eastern Montana Power Company. The merger was brought about by John D. Ryan, head of the Anaconda Copper Mining Company, and John G. Morony, president of the First National Bank of Great Falls. Each of the constituent companies had been formed as the result of mergers of earlier companies.

The Butte Electric and Power Company, was formed in 1901 to take over the assets and liabilities of the Butte Lighting and Power Company, which was, in turn, the successor to several local Butte power generating plants, including the Brush Electric Light and Power Company, the Silver Bow Electric Light Company, the Butte Electric Light and Power Company, the Silver Bow Electric Light and Power Company, the Butte General Electric Company, the Phoenix Electric Company, the Butte Gas Light and Coke Company, and others. The Butte Electric and Power Company’s properties also included a hydro-electric power station on the Big Hole River from The Montana Power Transmission Company, successor to the Big Hole Improvement Company; and a majority interest in several Great Falls companies including the Great Falls Street Railway Company, the Boston and Great Falls Electric and Power Company, and the Great Falls Electric Properties.

The Missouri River Electric and Power Company, was organized in 1911, as a successor to the United Missouri River Power Company (UMRPC), which had gone into receivership. The UMRPC was itself a merger of the Missouri River Power Company, the Capital City Power Company, and the Helena Power Transmission Company. By 1912 the successor company owned most of the hydro-electric facilities on the Missouri River, including the first Canyon Ferry Dam completed in 1898 by the Helena Water and Electric Power Company; the Hauser Dam built in 1907 by the Helena Power Transmission Company; and the Holter Dam, begun around 1907 by the Capital City Power Company; and, due to financial difficulties, not completed until after the merger into Montana Power Company.
The Madison River Power Company was organized in 1905 by Butte Electric and Power Company interests to take over the Nunn power plant on the Madison River from The Power Company. The Madison River Power Company also constructed the Lower Madison Development in 1906 and transmission lines to Butte. In addition the Company acquired the Bozeman Electric Light Company, the Bozeman Street Railway Company, the Gallatin Light, Power and Railway Company, and the Livingston Water Power Company.

The Billings and Eastern Montana Power Company was organized in 1908 to take over various power developments along the Yellowstone River, including the Yegan Brothers properties, the Yellowstone River Power Company, the Billings Water Power Company, the Montana Trading Company, and the Big Timber Electric Light and Power Company.

After the organization of the Montana Power Company in 1912, the company continued to consolidate power developments around the state. In 1929 several major systems were acquired. The Missoula Public Service Company, was a merger of the Missoula Light and Water Company and the Missoula Street Railway Company both developed by William A. Clark. The various Helena properties which had been consolidated under the Helena Gas and Electric Company in 1927, also became part of Montana Power Company in 1929. A third major acquisition in 1929 was the Thompson Falls Power Company, including its predecessor the Northwestern Development Company. The Great Falls Townsite Company, the Great Falls Power Company, and the Great Falls Street Railway Company were all acquired by Montana Power Company between 1931 and 1936. The last major system acquired before World War II was the Union Electric Company of Dillon, which included the properties of its predecessors the Rife Electric Company and the Dillon Electric Light and Power Company. In addition, many local utilities were added for which there are no records in this collection.

One of the most early lines used all Hemingray products, such as the Canyon Ferry Line, the A and B Line which ran from Canyon Ferry Dam to Butte which used CD 303/310 Muncies and where more difficult span required the CD 304/310 Coolie Hats (because of the NO neck design), started construction in 1899 and was supplying power by 1902. This line supplied power to many mines along the way as well as power to many small mining towns. This Line was one of The Missouri River Power Company’s first big lines and lasted well into the 1980’s with a lot of the poles still in use today.semiotics wayfarers pop-up aesthetic retro kogi Tumblr put a bird on it.

For you Insulator Hunters that like to Hike and hunt, here’s some of the lines and a Brief Description of the Location:

From Hauser and Canyon Ferry Dam (by Helena) to Butte Canyon Ferry A and B line, Muncies, Coolies and a few Stackers Warm Springs Creek by Clancy mt to Elkhorn #2 provo Line

Belt Mt to East end of Great Falls 7” Muncies
Craig Mt 7” Muncies

Boulder Mt to Radersburg Mt Muncie with Bases

Boulder Mt to The Comet Mine Muncies with Bases

Madison Dam to three forks Muncies with Base

Madison Dam to Butte No 1 Provos

Madison Dam to Trident No 1 HV triple Petticoat and HV triple Petticoats

Trident Mt HV Potential Triple Petticoat

Butte and surrounding area, CD 263 Columbia, Muncies, Coolies, Stackers, No 1 Provo, Mickeys HG Petticoats and No 19’s. Deer Lodge Mt Amber Base and Aqua Stackers

Red Lodge Mt Amber Base and Aqua Stackers

Reed Point to Aqua Stackers

Bozeman Mt to Belgrade Hemi Blue Muncies with Bases

Lewistown Mt 7” Muncies in Hemingray Blue

Billings Mt HG petticoat in Lilac, Mickeys, NO 23 in Hemingray Blue and Hemingray No95 Mine Insulator

Great Falls Mt 162’s in yellow amber, root beer amber and all different shade of dark amber, No 23 and 7” Muncies Livingston Mt to Big Timber Muncies with Bases

Corbin Mt Mickeys on line heading West

Georgetown to Philipsburg #2 Provos

Philipsburg and surrounding area #2 Provo, #1 Provo Stackers in Aqua, 162 in sage green

Polson Mt Mickeys in Clear
This is just a very Few places, and a few of the lines that ran thru the area. A BIG Thanks to Ron Yuhas and Justin Martin for helping me out on the Locations of these Historic Places and Lines.