- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Newhalem: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Newhalem
Power plant · Hydro
Key facts
Power plant · Hydro Retiring- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1970
- Net generation, 2020
- -85 MWh
- Grid
- 7 kV to City of Seattle - (WA) (SCL)
- Location
- Whatcom County, Washington
- Operated by
- City of Seattle - (WA)SourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
Details
Who’s behind it
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- Technology
- Hydro source: “Conventional Hydroelectric”
- Age
- 56 years since 1970
All 2 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Eia status |
|
| Balancing authority code | SCL |
Retirement
EIA-860M September 2026StatusAt least half of the plant's in-service nameplate capacity is scheduled to retire, on dates its owner has reported to EIA. As of EIA-860M for September 2026.- Next scheduled retirement
- December 2027
- Capacity scheduled to retire
- 2.3 MW
- Generators scheduled to retire
- 1
- Share of in-service capacity scheduled
- 100%
- Capacity still in service
- 2.3 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 20 | Conventional Hydroelectric | 2.3 MW | Scheduled to retire | December 2027 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 7 kV
- Transmission or distribution system owner
- City of Seattle - (WA)
- Balancing authority
- Seattle City Light
- NERC region
- WECC
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Timeline
- Stated Unit 20 scheduled to retire, 2.3 MW · EIA-860M
- In service · EIA-860M
Sources
3 sourcesSources EIA-860M · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory
Sources
- EIA-860M
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory