Shoshone Falls Hydroelectric Project, Cliff Substation & Warehouse, North Bank of Snake River, halfway between the Intake and powerhouse complex, Tipperary Corner, Jerome County, ID

Significance: The substation, rated at 138kV is an original component of the Idaho Power Company's 1920s expansion of the Shoshone Falls Hydroelectric Project to meet growing demand for electricity. Transmission lines connected the substation to the Idaho Power Company's American Falls Hydroelectric Project electric grid in 1927, thereby giving the company the flexibility to meet peak locational demand for the first time in its history. Building No. 285 was the fifth building constructed by at the Project in 1928 by the Idaho Power Company as part of its expansion of the facility's capacity. This small, stucco-sided building provided storage for equipment used at the Cliff Substation and the Shoshone Substation/Switchyard.
Survey number: HAER ID-45-I
Building/structure dates: 1928 Initial Construction