NewhalemOut of service
Whatcom County, Washington · EIA plant ID 9842 · Operator: City of Seattle - (WA)
Nameplate2MWSummer 2 MW
Generators1in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online1970Retirement planned Dec 2027
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 9.5 | 47.0% | — |
| 2002 | 9.9 | 49.1% | — |
| 2003 | 8.1 | 40.4% | — |
| 2004 | 12 | 59.6% | — |
| 2005 | 6.2 | 30.7% | — |
| 2006 | 8.8 | 43.9% | — |
| 2007 | 5.2 | 25.9% | — |
| 2008 | 2 | 9.2% | — |
| 2009 | 2.9 | 13.2% | — |
| 2010 | 4.3 | 19.6% | — |
| 2011 | 1.7 | 8.6% | — |
| 2012 | -0.1 | -0.4% | — |
| 2013 | -0.1 | -0.4% | — |
| 2014 | -0.1 | -0.4% | — |
| 2015 | -0.1 | -0.3% | — |
| 2016 | -0.1 | -0.3% | — |
| 2017 | -0.1 | -0.3% | — |
| 2018 | 1.7 | 8.4% | — |
| 2019 | -0.1 | -0.4% | — |
| 2020 | -0.1 | -0.4% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 20 | Conventional Hydroelectric | HY | 2.3 | 2.3 | Feb 1970 | Operating · retirement planned (Out of service) | Dec 2027 | coming soon |
Owner / operator
Operator: City of Seattle - (WA). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Seattle - (WA) | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Gorge | 207 MW | 3.4 km |
| Diablo | 182 MW | 9 km |
| Ross | 450 MW | 14.2 km |
| Upper Baker | 105 MW | 33.2 km |
| Koma Kulshan Associates | 12 MW | 35.4 km |
| Lower Baker | 104 MW | 39.4 km |