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265.6 MW Natural Gas Fired Combined Cycle (87 MW) + Natural Gas Fired Combustion Turbine (179 MW) operating in Los Angeles, CA — California Independent System Operator
265.6 MW
Nameplate Capacity
6
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combined Cycle + Natural Gas Fired Combustion Turbine
1976
Operating Since
Coordinates
34.1260, -118.1494
County
Los Angeles, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of Pasadena - (CA) | City of Pasadena - (CA) | — |
| Owner(s) | City of Pasadena - (CA) | City of Pasadena - (CA) | — |
| Status | Operating | — | — |
The Glenarm Power Plant is a power plant in Pasadena, California that began operating on July 4, 1907.
Read more on WikipediaThe Glenarm power plant is located in Los Angeles County, California. The plant has a total capacity of 265.6 MW across six generators, utilizing both natural gas-fired combined cycle and natural gas-fired combustion turbine technologies. It is owned and operated by the City of Pasadena, California. The plant became operational in 1976 and is considered a hybrid plant.
Glenarm operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In the most recent year with available data, the plant generated 38,514 MWh, resulting in a capacity factor of 1.6%. Glenarm is ranked as the 43rd largest power plant out of 76 in California, and 683rd out of 945 nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
California Independent System Operator (CISO)
Grid Voltage
34.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
3.4K MWh
Latest Month
38.5K MWh
Annual Generation
1.6%
Capacity Factor
CO₂ Intensity
1235 lb/MWh
NOx
0.182 lb/MWh
SO₂
0.003 lb/MWh
CH₄
0.024 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
1.8%
Annual Net Gen
41 GWh
CO₂eq
1236 lb/MWh
Subregion
WECC California
2013
$965/kW
Est. Construction Cost
Total estimated cost: $256.3M
Market Position
ISO/RTO Market
CAISO
LMP Node
Unit 5
Pricing Hub
TH_SP15_GEN-APND
Node Source
EIA-860 direct report
Last updated 2026-03-26
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