- Combustion
- Clean firm
- Wind & solar
- Unspecified fuel
- In development
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Clean firm
- Wind & solar
- Unspecified fuel
- In development
- Operating
Heber Geothermal: location and 6 exact-grade projects within 15 mi. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Heber Geothermal
Power plant · Geothermal
Key facts
Power plant · Geothermalran 47% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 2006
- Net generation, 2025
- 376,280 MWh
- Grid
- 92 kV to Imperial Irrigation District (IID)
- Location
- Imperial County, California
- Operated by
- ORCAL Geothermal, Inc
Output
Details
Who’s behind it
- Owner
- Ormat Nevada Inc
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- Technology
- Geothermal source: “Geothermal”
- Age
- 20 years since 2006
All 5 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| Fuel burned (MMBtu), 2025 | 1,283,868 |
| Capacity factor, 2025 | 0.469 |
| Net generation (MWh), 2025 | 376,280 |
| Balancing authority code | IID |
Retirement
EIA-860M September 2026StatusSome generators have retired; the rest of the plant is still in service. As of EIA-860M for September 2026.- Capacity retired
- 59 MW
- Generators retired
- 2
- Capacity still in service
- 91.5 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 1 | Geothermal | 52 MW | Retired | March 2023 |
| 2 | Geothermal | 7 MW | Retired | August 2023 |
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 (8)
Connection points 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.
Ownership
2 companies2| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| ORCAL Geothermal, Inc | Operator | EIA-860M | ||
| Ormat Nevada Inc | Owner | 100.0% | Dec 31, 2025 | EIA-860 |
Timeline
- Stated Unit 2 scheduled to retire, 7 MW · EIA-860M
- Stated Unit 1 scheduled to retire, 52 MW · EIA-860M
- In service · EIA-860M
Sources
7 sourcesSources EIA-860M · GEM · LBNL · CAISO · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Sources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- 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.
- CAISOSource: California ISO
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Around this plant
Nearby
within 15 mi| Project | Kind | Away | MW |
|---|---|---|---|
| Imperial Valley Solar, LLC Postponed | Solar | 5.0 mi | 400 |
| El Centro Hybrid Announced | Gas, reciprocating engine | 6.2 mi | 112.8 |
| Big Rock Solar Farm Postponed | Solar | 11.4 mi | 200 |
| Kingsley Solar Farm Withdrawn | Solar + storage | 12.8 mi | 299 |
| Imperial Sun Solar Filed | Solar + storage | 13.0 mi | 200 |
| CE&P Imperial Valley 1 Permitted | Other | 13.7 mi | 50 |