Glenarm
Glenarm is a 266 MW natural gas power plant in Los Angeles County, California, operated by City of Pasadena - (CA). EIA-860M lists 6 generating units here, inside CAISO. Its units entered service between 1976 and 2016.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 265.6 MW
- 222.4 MW net summer
- Generating units
- 6
- In service
- 1976–2016
- EIA plant ID
- 422
Where it is
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- County
- Los Angeles County, California
- Coordinates
- 34.126, -118.1494
- Balancing authority
- CISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- City of Pasadena - (CA)
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combined Cycle, Natural Gas Fired Combustion Turbine
- Status
- Operating
Glenarm: FAQ
- Where is Glenarm?
- In Los Angeles County, California (CA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Glenarm?
- 266 MW of nameplate capacity across 6 units, as of the EIA-860M release for 2026-07.
- Who owns Glenarm?
- EIA-860M names City of Pasadena - (CA) as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Glenarm LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Pasadena - (CA) here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Glenarm LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Glenarm still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.