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80 MW Hydro operating in Linn, OR
80 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1967
Operating Since
Coordinates
44.4499, -122.5493
County
Linn, OR
Nearby Plants
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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 | USACE Northwestern Division | US Army Corps of Engineers - Portland District | — |
| Owner(s) | USACE Northwestern Division | US Army Corps of Engineers - Portland District | — |
| Status | Operating | operating | — |
GEM identifies the owner as US Army Corps of Engineers - Portland District
This entity is not yet in the GEM ownership database — chain unavailable.
Green Peter Dam is a concrete gravity dam impounding the Middle Santiam River in Linn County in the U.S. state of Oregon. It was completed in 1967 to generate hydroelectricity, prevent flood damage, provide irrigation, and improve water quality downstream. It has been leaking for many years but is considered to be safe by authorities. Water released by the dam is regulated by the Foster Dam 7 miles (11 km) down the river.
Read more on WikipediaGreen Peter is an 80 MW hydroelectric power plant located in Linn County, Oregon. The plant began operating in 1967 and utilizes conventional hydroelectric technology. It consists of two generators and is owned and operated by the USACE Northwestern Division. The primary fuel source is water (WAT).
The plant's latest annual generation was 155,327 MWh, resulting in a capacity factor of 22.2%. Green Peter operates within the Bonneville Power Administration balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. It is the 12th largest of 63 power plants in Oregon, and ranks 226th out of 1464 plants nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Bonneville Power Administration (BPAT)
Grid Voltage
115.0 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.
583 MWh
Latest Month
155.3K MWh
Annual Generation
22.2%
Capacity Factor
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2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $183.6M
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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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Federal judge ordered Green Peter Reservoir lowered to historic levels each fall/winter to aid fish passage, halting power generation during drawdown periods.
source