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603 MW Hydro operating in Walla Walla, WA
603 MW
Nameplate Capacity
6
Generators
units
Conventional Hydroelectric
Technology
1962
Operating Since
Coordinates
46.2498, -118.8798
County
Walla Walla, WA
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 - Walla Walla District | United States Army Corps of Engineers |
| Owner(s) | USACE Northwestern Division | US Army Corps of Engineers - Walla Walla District | — |
| Status | Operating | operating | — |
GEM identifies the owner as US Army Corps of Engineers - Walla Walla District
This entity is not yet in the GEM ownership database — chain unavailable.
Ice Harbor Lock and Dam is a hydroelectric, concrete gravity run-of-the-river dam in the northwest United States. On the lower Snake River in southeastern Washington, it bridges Walla Walla and Franklin counties. Located eight miles (13 km) northeast of Burbank and twelve miles (19 km) east of Pasco, river mile 9.7, the dam's name comes from a tiny bay in the river where boats once tied up to wait for upstream ice-jams to break up.
Read more on WikipediaIce Harbor is a 603 MW hydroelectric power plant located in Walla Walla County, Washington. The plant began operating in 1962 and utilizes conventional hydroelectric technology. It has six generators and is owned and operated by the USACE Northwestern Division. The primary fuel source is water (WAT).
Ice Harbor is the 12th largest power plant in Washington out of 23, and the 41st largest hydroelectric plant nationally out of 194. The plant operates within the Bonneville Power Administration balancing authority and the WECC NERC region. In the latest year of reported generation data, Ice Harbor produced 1,511,186 MWh of electricity, achieving a capacity factor of 28.6%.
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.
194.0K MWh
Latest Month
1.5M MWh
Annual Generation
28.6%
Capacity Factor
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2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $1.4B
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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 2026-03-14
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U.S. Energy Secretary Chris Wright toured Ice Harbor Dam, praised hydropower value, and confirmed the Trump administration's rejection of the Biden-era Lower Snake River dam deal.
sourceFish-friendly turbine runner replacement program at Ice Harbor Dam, designed by Voith, advancing with goals of higher efficiency and increased generating capacity.
source