He named the company and town after his financial backer, Pennsylvania coal magnate Mahlon S. Kemmerer (1843–1925).

Quealy sold lots in the townsite rather than lease them, which permitted the establishment of independent businesses.

In Wyoming, he and his wife became active in Democratic Party politics and in St. Patrick's Church, for which the company donated land.

Its president Asbury D. Hoskins was manager of the Blyth-Fargo-Hoskins Company, and was elected Wyoming state treasurer in 1919.

[8] TerraPower selected Kemmerer, Wyoming as the site for a 345 MWe reactor using a molten salt energy storage system.

The reactor can temporarily boost output to 500 MWe, enabling the plant to integrate with renewable resources.

[9] In June 2024 the site broke ground, beginning preparation for the as-yet unapproved reactor.

[12] The Fossil Butte National Monument is located 15 miles west of Kemmerer, on U.S. Highway 30.

[17] The 2016-2020 5-year American Community Survey estimates show that the median household income was $63,861 (with a margin of error of +/- $4,663).

[29] The plant employs 230 people, and is scheduled to stop burning coal[30] in 2026, and gas in 2036.

[31] In 2021, TerraPower announced it would open a sodium-cooled nuclear power plant in Kemmerer in 2028, at an estimated cost of $4 billion.

[32] The company plans to employ workers from Naughton Power Plant,[33][34] and started clearing the site in 2024 to be ready for construction if/when a license is obtained from the Nuclear Regulatory Commission.