HydroOperating

Solomon Gulch

Hydro power plant in Valdez Cordova, Alaska. 12 MW of nameplate capacity across 2 generators, operated by Copper Valley Elec Assn, Inc.

Also known as Solomon Gulch Hydroelectric Project · EIA plant 390

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Allison Creek HydroValdez CogenValdez2 km
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3 plants within 6.2 km, from EIA coordinates.

Key facts

Capacity
12 MWNameplate
Generators
2 operatingEIA-860M, August 2026
Operating since
January 1982First generator online
Operator
Copper Valley Elec Assn, IncEIA operator ID 4329
Grid
Not reported
Price nodes
None linkedNo verified ISO node
Location
Valdez Cordova, AK61.0828, −146.3033
EIA plant ID
390EIA plant page

Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.

How much power Solomon Gulch produces

Free · EIA-923

Net generation, 2025

41.8 GWh

41,811 MWh, final

Capacity factor, 2025

39.8%

2024: 41.0%

January to July 2026

Not reported

Provisional. 0 of 7 months reported

Range, 2015 to 2025

33.5–56.0

GWh a year. Low 2020, high 2015

Annual net generation, GWhCapacity factor below each year
Annual net generation from EIA-923
YearNet generation, MWhCapacity factorMonths reported
20000Not reported12 of 12
200150,788Not reported12 of 12
200256,651Not reported12 of 12
200352,812Not reported12 of 12
200451,353Not reported12 of 12
200549,427Not reported12 of 12
200654,917Not reported12 of 12
200734,556Not reported12 of 12
200847,429Not reported12 of 12
200944,988Not reported12 of 12
201044,75842.6%12 of 12
201146,18943.9%12 of 12
201244,13541.9%12 of 12
201354,75052.1%12 of 12
201454,95552.3%12 of 12
201555,98253.3%12 of 12
201654,85052.0%12 of 12
201736,76335.0%12 of 12
201842,08740.0%12 of 12
201953,19850.6%12 of 12
202033,50931.8%12 of 12
202141,18239.2%12 of 12
202237,78635.9%12 of 12
202333,93032.3%12 of 12
202443,23841.0%12 of 12
202541,81139.8%12 of 12
2026 (provisional, partial year)Not reportedNot reported0 of 7

* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.

Power prices and basis

Free account

No verified ISO price node is linked to this plant, or its price history could not load.

Emissions

Free · EPA CAMPD

No EPA emissions units are linked to this plant.

Water use

Free · EIA-923 cooling, USGS

No EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.

Generators

Free · EIA-860M
GeneratorTechnologyNameplate MWOnline since
1Conventional Hydroelectric6.0January 1982
2Conventional Hydroelectric6.0January 1982

Ownership and offtake

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Ownership and offtake are part of Pro

Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Copper Valley Elec Assn, Inc as the operator, which is not always the owner.

Modeled data

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Power plants near Solomon Gulch

More plants operated by Copper Valley Elec Assn, Inc

Questions about Solomon Gulch

How much power does Solomon Gulch produce?

Solomon Gulch reported 41,811 MWh (41.8 GWh) of net generation in 2025, a 39.8% capacity factor on 12 MW of nameplate capacity.

Where is Solomon Gulch?

Solomon Gulch is in Valdez Cordova, Alaska, at 61.0828, −146.3033.

Who operates Solomon Gulch?

EIA-860M for August 2026 lists Copper Valley Elec Assn, Inc as the operator (EIA operator ID 4329). The operator is not always the owner.

When did Solomon Gulch start operating?

Its first generator began operating in January 1982, according to EIA-860M.

Sources

  • EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
  • EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
  • Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)

Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page