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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
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
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
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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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.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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