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18 MW Hydro operating in Marion, OR — Bonneville Power Administration
18 MW
Nameplate Capacity
1
Generators
unit
Conventional Hydroelectric
Technology
1954
Operating Since
Coordinates
44.7513, -122.2833
County
Marion, OR
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | USACE Northwestern Division | — | — |
| Owner(s) | USACE Northwestern Division | — | — |
| Status | Operating | — | — |
Big Cliff is a hydroelectric power plant located in Marion County, Oregon. The plant has a total capacity of 18 MW and began operating in 1954. It is owned and operated by the USACE Northwestern Division. The plant utilizes conventional hydroelectric technology and has one generator. Big Cliff is ranked 28th out of 63 power plants in Oregon and 512th out of 1464 plants nationally.
The plant's primary fuel source is water (WAT). In the most recent year with available data, Big Cliff generated 90,835 MWh of electricity, achieving a capacity factor of 57.5%. The plant operates within the Bonneville Power Administration balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
8.7K MWh
Latest Month
90.8K MWh
Annual Generation
57.5%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $41.3M
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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ask pi about Big CliffBonneville Power Administration (BPAT)
Grid Voltage
13.8 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
Sector
Electric Utility