- Storage
- Retired
- 10 · 100 · 1,000 MW
Map
- Storage
- Retired
MESA 1: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Mesa 1
Power plant · Storage
As filed: MESA 1
Key facts
Power plant · Storage Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 2015
- Net generation, 2024
- -4 MWh
- Grid
- 13 kV to PUD 1 of Snohomish County (BPAT)
- Location
- Snohomish County, Washington
- Operated by
- PUD No 1 of Snohomish County - (WA)SourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
Details
Who’s behind it
No companies named in filings yet.
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- Technology
- Storage source: “Batteries”
- Age
- 11 years since 2015
All 3 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Fuel burned (MMBtu), 2025 | 0 |
| Net generation (MWh), 2025 | -2 |
| Balancing authority code | BPAT |
Data notes (1)
- Capacity factor, 2025 not shown: net generation -2.0 MWh is not positive (the plant consumed at least as much as it produced over the year)
Retirement
EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.- Retired
- August 2025
- Capacity retired
- 2 MW
- Generators retired
- 2
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| A | Batteries | 1 MW | Retired | August 2025 |
| B | Batteries | 1 MW | Retired | August 2025 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 13 kV
- Transmission or distribution system owner
- PUD 1 of Snohomish County
- Balancing authority
- Bonneville Power Administration
- NERC region
- WECC
Transmission lines within 15 mi (1)
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 Units A, B scheduled to retire, 2 MW · EIA-860M
- In service · EIA-860M
Sources
4 sourcesSources EIA-860M · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory
Sources
- EIA-860M
- LBNLYin, Nait Belaid & Heleno (2026), Lawrence Berkeley National Laboratory, OEDI, CC BY 4.0: A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. Modified by Inframation: HIFLD-side fields only, names re-cased, coordinates rounded.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory