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50.4 MW Hydro operating in Mason, WA
50.4 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1926
Operating Since
Coordinates
47.4223, -123.2203
County
Mason, WA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of Tacoma - (WA) | — | — |
| Owner(s) | City of Tacoma - (WA) | — | — |
| Status | Operating | — | — |
Cushman 1 is a hydroelectric power plant located in Mason County, Washington. The plant, which began operating in 1926, has a total capacity of 43.2 MW derived from two generators. It is owned and operated by City of Tacoma - (WA). The primary fuel source for the plant is water ("WAT" in EIA parlance).
In the most recent year with available data, Cushman 1 generated 120,047 MWh of electricity, resulting in a capacity factor of 31.6%. The plant's balancing authority is City of Tacoma, Department of Public Utilities, Light Division, and it operates within the Western Electricity Coordinating Council (WECC) NERC region. Cushman 1 is ranked as the 33rd largest power plant in Washington out of 75, and nationally it is ranked 333rd out of 1464 plants.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
City of Tacoma, Department of Public Utilities, Light Division (TPWR)
Grid Voltage
110.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
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.
23.0K MWh
Latest Month
120.0K MWh
Annual Generation
31.6%
Capacity Factor
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2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $99.1M
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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