The Volta Powerhouses are hydroelectric generation plants located in southern Shasta County, California, between Shingletown and Manton. Volta Powerhouse I 40°27′33″N 121°51′56″W was built in 1901 by Keswick Electric Power Company; Volta Powerhouse II was built in 1980 [1]. Manton locals claim that Volta Powerhouse I is the oldest operational hydro-electric generation plant in California.
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Volta powerhouses Wikipedia(Text) CC BY-SA