Monolith (formerly, Aqueduct)[2] is an unincorporated community in the Tehachapi Valley, in Kern County, California.

[1] The community is located 4.5 miles (7.2 km) east of Tehachapi,[2] at an elevation of 3,966 feet (1,209 m) in the southern Sierra Nevada and eastern Tehachapi Pass areas.

[2] Aqueduct−Monolith began as a camp for workers at a cement plant for the Owens Valley aqueduct project, supplying materials for the construction of concrete structures.

[2] William Mulholland bestowed the name change, due to a huge limestone deposit.

[2] At Monolith Substation in 2014, Southern California Edison commissioned the Tehachapi Energy Storage Project, which was the largest lithium-ion battery system operating in North America at the time of commissioning and one of the largest in the world.