21 Original UAMPS Members entered into Power Sales Contract to Form UAMPS they were:

Beaver City, UT, City of Enterprise, UT, Ephraim City, UT, Fairview City, UT, Fillmore City, UT, Heber Light & Power, UT, Holden Town, UT, Hurricane City, UT, Hyrum City, UT, Kanosh City, UT, Kaysville City, UT, Lehi City, UT, City of Logan, UT, Meadow Town, UT, Monroe City, UT, Morgan City, UT, Mt. Pleasant City, UT, Murray City, UT, Town of Oak City, UT, Parowan City, UT, Spring City, UT