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49.8 MW Natural Gas Fired Combustion Turbine (25 MW) + Petroleum Liquids (25 MW) operating in Imperial, CA — Imperial Irrigation District
49.8 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combustion Turbine + Petroleum Liquids
1979
Operating Since
Coordinates
32.9555, -115.5365
County
Imperial, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Imperial Irrigation District | Imperial Irrigation District | — |
| Owner(s) | Imperial Irrigation District | Imperial Irrigation District | — |
| Status | Operating | — | — |
The Rockwood power plant, located in Imperial County, California, has a total capacity of 49.8 MW. The plant began operating in 1979 and is owned and operated by the Imperial Irrigation District. The primary fuel source is distillate fuel oil (DFO), and the plant utilizes both natural gas-fired combustion turbine and petroleum liquids technologies. It is considered a hybrid plant.
Rockwood operates within the Imperial Irrigation District balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. The plant's latest annual generation was 6,809 MWh, resulting in a capacity factor of 1.6%. Rockwood ranks as the 3rd largest petroleum liquids plant out of 16 in California, and 107th out of 886 nationally. The plant consists of 2 generators.
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
Imperial Irrigation District (IID)
Grid Voltage
33.0 kV
Regulatory Status
RE — Regulated
Entity Type
Political Subdivision
Sector
Electric Utility
590 MWh
Latest Month
6.8K MWh
Annual Generation
1.6%
Capacity Factor
CO₂ Intensity
1948 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
4 lb/MWh
SO₂
4 lb/MWh
CH₄
0.041 lb/MWh
N₂O
0.006 lb/MWh
Capacity Factor
0.9%
Annual Net Gen
4 GWh
CO₂eq
1950 lb/MWh
Subregion
WECC Southwest
2013
$965/kW
Est. Construction Cost
Total estimated cost: $48.1M
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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