THUMS
Natural gas power plant in Los Angeles County, California. 57.4 MW of nameplate capacity across 1 generator, operated by THUMS Long Beach Company.
Also known as EIA plant 56051
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Key facts
- Capacity
- 57.4 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- January 2003First generator online
- Operator
- THUMS Long Beach CompanyEIA operator ID 18986
- Grid
- CAISOBalancing authority CISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Los Angeles County, CA33.7684, −118.2141
- EIA plant ID
- 56051EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power THUMS produces
Free · EIA-923Net generation, 2025
168 GWh
168,216 MWh, final
Capacity factor, 2025
33.5%
2024: 69.2%
January to July 2026
88.7 GWh
Provisional
Range, 2015 to 2025
168.2–379.2
GWh a year. Low 2025, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | 329,908 | Not reported | 12 of 12 |
| 2004 | 186,206 | Not reported | 12 of 12 |
| 2005 | 317,501 | Not reported | 12 of 12 |
| 2006 | 387,480 | Not reported | 12 of 12 |
| 2007 | 382,687 | Not reported | 12 of 12 |
| 2008 | 379,975 | Not reported | 12 of 12 |
| 2009 | 379,975 | Not reported | 12 of 12 |
| 2010 | 355,723 | 70.7% | 12 of 12 |
| 2011 | 367,601 | 73.1% | 12 of 12 |
| 2012 | 347,361 | 68.9% | 12 of 12 |
| 2013 | 316,949 | 63.0% | 12 of 12 |
| 2014 | 301,868 | 60.0% | 12 of 12 |
| 2015 | 377,997 | 75.2% | 12 of 12 |
| 2016 | 379,218 | 75.2% | 12 of 12 |
| 2017 | 368,895 | 73.4% | 12 of 12 |
| 2018 | 349,699 | 69.5% | 12 of 12 |
| 2019 | 309,014 | 61.5% | 12 of 12 |
| 2020 | 356,465 | 70.7% | 12 of 12 |
| 2021 | 299,402 | 59.5% | 12 of 12 |
| 2022 | 172,747 | 34.4% | 12 of 12 |
| 2023 | 286,021 | 56.9% | 12 of 12 |
| 2024 | 348,710 | 69.2% | 12 of 12 |
| 2025 | 168,216 | 33.5% | 12 of 12 |
| 2026 (provisional, partial year) | 88,684 | 30.4% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Natural Gas Fired Combustion Turbine | 57.4 | January 2003 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists THUMS Long Beach Company as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about THUMS
How much power does THUMS produce?
THUMS reported 168,216 MWh (168 GWh) of net generation in 2025, a 33.5% capacity factor on 57.4 MW of nameplate capacity. From January to July 2026 it reported 88.7 GWh, which is provisional.
Where is THUMS?
THUMS is in Los Angeles County, California, at 33.7684, −118.2141. It is in the California Independent System Operator balancing area (CISO).
Who operates THUMS?
EIA-860M for August 2026 lists THUMS Long Beach Company as the operator (EIA operator ID 18986). The operator is not always the owner.
When did THUMS start operating?
Its first generator began operating in January 2003, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page