Yellowtail

OperatingHydro

Ranked #4 of 23 Hydro plants in MT#73 of 1454 nationally

278.2 MW Hydro operating in Big Horn, MT — Western Area Power Administration UGP West

EIAGEMWD

278.2 MW

Nameplate Capacity

Generators

units

Conventional Hydroelectric

Technology

1966

Operating Since

Location

Coordinates

45.3074, -107.9575

County

Big Horn, MT

Ownership & Operator

Owner data does not fully agree across sources.

EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.

Field	EIA	GEM	Wikidata
Operator	U S Bureau of Reclamation	US Bureau of Reclamation	—
Owner(s)	U S Bureau of Reclamation	US Bureau of Reclamation [100%]	—
Status	Operating	operating	—

Ownership Chain

GEM identifies the owner as US Bureau of Reclamation [100%]

This entity is not yet in the GEM ownership database — chain unavailable.

About

Yellowtail Dam is a dam across the Bighorn River in south central Montana in the United States. The mid-1960s era concrete arch dam serves to regulate the flow of the Bighorn for irrigation purposes and to generate hydroelectric power. The dam and its reservoir, Bighorn Lake, are owned by the U.S. Bureau of Reclamation.

Read more on Wikipedia

Yellowtail is a 278.2 MW hydroelectric power plant located in Big Horn County, Montana. It began operating in 1966 and is owned and operated by the U.S. Bureau of Reclamation. The plant utilizes conventional hydroelectric technology and consists of four generators. As of the most recent data, Yellowtail generated 798,419 MWh annually, achieving a capacity factor of 32.7%.

Yellowtail is the fourth-largest of six hydroelectric plants in Montana, and ranks 73rd out of 194 nationally. The plant is located within the Western Electricity Coordinating Council (WECC) NERC region. The balancing authority for Yellowtail is the Western Area Power Administration UGP West.

Generated from EIA, GEM, and public data sources