- Clean firm
- Wind & solar
- In development
- Retired
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Wind & solar
- In development
- Retired
Ormesa IH: location and 1 exact-grade project within 15 mi. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Ormesa IH
Power plant · Geothermal
Key facts
Power plant · Geothermalran 22% of 2017 Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1989
- Net generation, 2017
- 27,243 MWh
- Grid
- 92 kV to Imperial Irrigation District (IID)
- Location
- Imperial County, California
- Operated by
- Ormat Nevada IncSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
Details
Who’s behind it
No companies named in filings yet.
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- Technology
- Geothermal source: “Geothermal”
- Age
- 37 years since 1989
1 attribute from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Balancing authority code | IID |
Retirement
EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.- Retired
- December 2017
- Capacity retired
- 14.4 MW
- Generators retired
- 12
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| OE11 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE12 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE13 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE14 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE15 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE16 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE21 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE22 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE23 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE24 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE25 | Geothermal | 1.2 MW | Retired | December 2017 |
| OE26 | Geothermal | 1.2 MW | Retired | December 2017 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 92 kV
- Transmission or distribution system owner
- Imperial Irrigation District
- Balancing authority
- Imperial Irrigation District
- NERC region
- WECC
Transmission lines within 15 mi (2)
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 OE11, OE12, OE13, OE14, OE15, OE16, OE21, OE22, OE23, OE24, OE25, OE26 scheduled to retire, 14.4 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
Around this plant
Nearby
within 15 mi| Project | Kind | Away | MW |
|---|---|---|---|
| Imperial Sun Solar Filed | Solar + storage | 7.4 mi | 200 |
Sources EIA-860M