Ross
Hydro power plant in Whatcom County, Washington. 450 MW of nameplate capacity across 4 generators, operated by City of Seattle - (WA).
Also known as Ross Dam Powerhouse · EIA plant 6202
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 450 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- December 1952First generator online
- Operator
- City of Seattle - (WA)EIA operator ID 16868
- Grid
- SCLBalancing authority SCL
- Price nodes
- 4 CAISO nodesResource nodes with prices
- Location
- Whatcom County, WA48.7326, −121.0679
- EIA plant ID
- 6202EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Ross produces
Free · EIA-923Net generation, 2025
532 GWh
531,608 MWh, final
Capacity factor, 2025
13.5%
2024: 10.4%
January to July 2026
451 GWh
Provisional
Range, 2015 to 2025
410.1–822.3
GWh a year. Low 2024, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 739,062 | Not reported | 12 of 12 |
| 2001 | 390,312 | Not reported | 12 of 12 |
| 2002 | 834,803 | Not reported | 12 of 12 |
| 2003 | 725,036 | Not reported | 12 of 12 |
| 2004 | 678,712 | Not reported | 12 of 12 |
| 2005 | 561,114 | Not reported | 12 of 12 |
| 2006 | 638,651 | Not reported | 12 of 12 |
| 2007 | 857,197 | Not reported | 12 of 12 |
| 2008 | 656,306 | Not reported | 12 of 12 |
| 2009 | 619,116 | Not reported | 12 of 12 |
| 2010 | 645,726 | Not reported | 12 of 12 |
| 2011 | 868,242 | 22.0% | 12 of 12 |
| 2012 | 937,814 | 23.7% | 12 of 12 |
| 2013 | 724,327 | 18.4% | 12 of 12 |
| 2014 | 794,413 | 20.2% | 12 of 12 |
| 2015 | 682,792 | 17.3% | 12 of 12 |
| 2016 | 789,494 | Not reported | 12 of 12 |
| 2017 | 739,553 | Not reported | 12 of 12 |
| 2018 | 688,166 | 17.5% | 12 of 12 |
| 2019 | 522,600 | 13.3% | 12 of 12 |
| 2020 | 653,932 | 16.5% | 12 of 12 |
| 2021 | 822,307 | 20.9% | 12 of 12 |
| 2022 | 747,225 | 19.0% | 12 of 12 |
| 2023 | 411,551 | 10.4% | 12 of 12 |
| 2024 | 410,106 | 10.4% | 12 of 12 |
| 2025 | 531,608 | 13.5% | 12 of 12 |
| 2026 (provisional, partial year) | 450,599 | 19.7% | 7 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 · CAISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo 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| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 41 | Conventional Hydroelectric | 112.5 | November 1956 |
| 42 | Conventional Hydroelectric | 112.5 | January 1954 |
| 43 | Conventional Hydroelectric | 112.5 | April 1953 |
| 44 | Conventional Hydroelectric | 112.5 | December 1952 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists City of Seattle - (WA) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
300 analyst questions a month, plus MCP
Query Ross and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Ross
More plants operated by City of Seattle - (WA)
Questions about Ross
How much power does Ross produce?
Ross reported 531,608 MWh (532 GWh) of net generation in 2025, a 13.5% capacity factor on 450 MW of nameplate capacity. From January to July 2026 it reported 451 GWh, which is provisional.
Where is Ross?
Ross is in Whatcom County, Washington, at 48.7326, −121.0679. It is in the Seattle City Light balancing area (SCL).
Who operates Ross?
EIA-860M for August 2026 lists City of Seattle - (WA) as the operator (EIA operator ID 16868). The operator is not always the owner.
When did Ross start operating?
Its first generator began operating in December 1952, according to EIA-860M.
Does InfraMap have power prices for Ross?
Yes. InfraMap has CAISO day-ahead and real-time prices at 4 price nodes linked to Ross, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
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)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page