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19.5 MW Hydro out of service in La Paz, AZ
19.5 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1993
Operating Since
Coordinates
34.1682, -114.2774
County
La Paz, AZ
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Colorado River Indian Irr Proj | — | — |
| Owner(s) | Colorado River Indian Irr Proj | — | — |
| Status | Out of service | — | — |
Headgate Rock is a 19.5 MW hydroelectric power plant located in La Paz County, Arizona. The plant began operating in 1993 and utilizes conventional hydroelectric technology. It consists of 3 generators and is owned and operated by the Colorado River Indian Irrigation Project. Headgate Rock is the 8th largest hydroelectric plant in Arizona (out of 11) and ranks 496th nationally (out of 1464).
The plant's primary fuel source is water (WAT). In the most recent year of reported data, Headgate Rock generated 35,773 MWh of electricity, achieving a capacity factor of 20.9%. The balancing authority for the plant is the Western Area Power Administration - Desert Southwest Region, and it operates within the WECC NERC region.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Western Area Power Administration - Desert Southwest Region (WALC)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
Sector
Electric Utility
Historic generation and capacity factor for this asset — the foundation for forward forecasts on the InfraSure platform.
2.2K MWh
Latest Month
35.8K MWh
Annual Generation
20.9%
Capacity Factor
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2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $44.7M
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
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