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91.5 MW Geothermal operating in Imperial, CA — Imperial Irrigation District
91.5 MW
Nameplate Capacity
5
Generators
units
Geothermal
Technology
2006
Operating Since
Coordinates
32.7146, -115.5180
County
Imperial, CA
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | ORCAL Geothermal, Inc | ORCAL Geothermal | — |
| Owner(s) | Ormat Nevada Inc | Ormat Technology Inc | — |
| Status | Operating | operating | — |
GEM identifies the owner as Ormat Technology Inc
This entity is not yet in the GEM ownership database — chain unavailable.
Heber Geothermal is a 91.5 MW geothermal power plant located in Imperial County, California. The plant, which began operating in 2006, is owned and operated by ORCAL Geothermal, Inc. It consists of 5 generators utilizing geothermal technology and is interconnected with the Imperial Irrigation District balancing authority in the Western Electricity Coordinating Council (WECC) region.
In the most recent year of reported data, Heber Geothermal generated 384,859 MWh of electricity, achieving a capacity factor of 47.9%. The plant is a significant geothermal energy producer, ranking 6th out of 33 geothermal plants in California and 9th out of 70 nationally.
Generated from EIA, GEM, and public data sources
Grid Region
California (non-ISO)
Market
Bilateral Market
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
37.1K MWh
Latest Month
384.9K MWh
Annual Generation
47.9%
Capacity Factor
CO₂ Intensity
89 lb/MWh
NOx
0.001 lb/MWh
SO₂
2013
$2,851/kW
Est. Construction Cost
Total estimated cost: $260.8M
This plant is in a bilateral market territory without organized wholesale pricing. Nodal pricing data is not available.
Last updated 2026-03-14
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ask pi about Heber GeothermalImperial Irrigation District (IID)
Grid Voltage
92.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
0.000 lb/MWh
CH₄
—
N₂O
—
Capacity Factor
19.0%
Annual Net Gen
250 GWh
CO₂eq
89 lb/MWh
Subregion
WECC Southwest