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10 · 100 · 1,000 MW

Long Beach Generation

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Power plant · Gas, combustion turbine

Key facts

Power plant · Gas, combustion turbine Operating

Capacity: Capacity: sourceEIA-860M · Oct 30, 2026Open licenseMW

Commissioned: 1976
Net generation, 2025: 5,878 MWh
Grid: 66 kV to Southern California Edison Co (CISO)
Location: Los Angeles County, California
Operated by: Long Beach Generation LLC

Output

Net generation MWh by year, 2001 to 2025

Fuel burned MMBtu by year, 2001 to 2025

Operations detail

Details

Who’s behind it

Owner: ArcLight Energy Partners Fund VII LP, Generation Bridge Acquisition, Long Beach Generation LLC and 2 more

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Technology: Gas, combustion turbine source: “Natural Gas Fired Combustion Turbine”
Age: 50 years since 1976
Unused energy: 2,202 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
Heat rate: 17,361 Btu/kWh 2025

All 7 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory

Attributes
Attribute	Value
Gem	Parents Name ArcLight Capital Partners LLC Share pct 50 Gem entity id E100000001143 Name ACH GP LLC Share pct 25 Gem entity id E100002022053 Name ACHP II LP Share pct 12.50 Gem entity id E100002022052 Name ACHP LP Share pct 12.50 Gem entity id E100002022051 Unit ids G100000402310, G100000402311, G100000402312, G100000402313 Location id L100000401590 Eia plant ids 341
EPA greenhouse gas reporting (GHGRP)	EPA FRS ID 110035420112 Subparts reported D NAICS code 221112 Subpart PP (CO2 supply) No Subpart RR (geologic sequestration) No Subpart UU (CO2 injection) No Reporting year 2023 GHGRP facility ID 1000490
Fuel burned (MMBtu), 2025	102,048
Capacity factor, 2025	0.003
Heat rate (Btu/kWh), 2025	17,361
Net generation (MWh), 2025	5,878
Balancing authority code	CISO

Retirement

Capacity retired: 335.4 MW
Generators retired: 5
Capacity still in service: 252 MW

Generators that retired or are scheduled to retire
Generator	Technology	Nameplate	State	Date
CT5	Natural Gas Fired Combined Cycle	63 MW	Retired	December 2004
CT6	Natural Gas Fired Combined Cycle	63 MW	Retired	December 2004
CT7	Natural Gas Fired Combined Cycle	63 MW	Retired	December 2004
ST8	Natural Gas Fired Combined Cycle	80 MW	Retired	December 2004
ST9	Natural Gas Fired Combined Cycle	66.4 MW	Retired	December 2004

Grid

Grid voltage at the plant: 66 kV
Transmission or distribution system owner: Southern California Edison Co
Balancing authority: California Independent System Operator
NERC region: WECC

Transmission lines within 25 km (10)

Lightpipe 230 kV line 230 kV · 0.1 km
Wilmington Station C 138 kV line 138 kV · 3.2 km
Wilmington Station C 138 kV line 138 kV · 4.8 km
Wilmington Station C 138 kV line 138 kV · 4.8 km
Wilmington Station C 138 kV line 138 kV · 4.8 km
Wilmington Station C 138 kV line 138 kV · 4.8 km
Lightpipe 230 kV line 230 kV · 5.5 km
138 kV line 312282 138 kV · 10.7 km
138 kV line 311952 138 kV · 10.7 km
Lightpipe 230 kV line 230 kV · 11.5 km

Connection points within 25 km (2)

Arco Gen #1 & #2 230kV lines CAISO · 230 kV · 1 request nearby, nearest 6.1 km
Colorado River Substation 220kV CAISO · 220 kV · 1 request nearby, nearest 21.9 km

Can the connection be reused?

A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.

Ownership

5 companies

Companies with an ownership or operating interest in this asset.
Company	Role	Share	As of	Source
Long Beach Generation LLC	Operator			EIA-860M
ARCLIGHT ENERGY PARTNERS FUND VII LP	Owner	100.0%	Dec 31, 2023	EPA GHGRP
Generation Bridge Acquisition	Owner	100.0%	Dec 31, 2025	EIA-860
Long Beach Generation LLC	Owner		Dec 31, 2025	EIA-860
NRG Energy, Inc	Owner		Dec 31, 2025	EIA-860
Vistra Corp	Owner		Dec 31, 2025	EIA-860

Timeline

Dec 2004 Stated Units CT5, CT6, CT7, ST8, ST9 scheduled to retire, 335.4 MW · EIA-860M
1976 In service · EIA-860M

Sources

8 sources

Sources EIA-860M · GEM · LBNL · CAISO · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT) · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules

Sources

EIA-860MOpen license · retrieved Nov 4, 2026
GEMOpen license, with credit · retrieved Oct 26, 2026Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
LBNLOpen license, with credit · retrieved Nov 9, 2026Yin, Nait Belaid & Heleno (2026), Lawrence Berkeley National Laboratory, OEDI, CC BY 4.0: A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. Modified by Inframation: HIFLD-side fields only, names re-cased, coordinates rounded.
CAISOOpen license, with credit · retrieved Nov 11, 2026Source: California ISO
EIAOpen license · retrieved Nov 1, 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
EIA-860M Preliminary Monthly Electric Generator Inventory
EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules

Every source and license · Attribution

View at source

Around this plant

Nearby

Projects within 25 km, nearest first.
Project	Kind	Away	MW
Elevate Pier S Filed	Storage	0.1 km	70
Watson Cogeneration Withdrawn	Gas, combined cycle	6.1 km	94.2
San Pedro Public Market (SPPM) Under construction	Solar	6.2 km	1.2
Dominguez - SLLAX512 Under construction	Solar	8.5 km	1.3
South Bay Dis Ctr 12 - SLLAX104 Under construction	Solar	8.8 km	1.2
South Bay Dis Ctr 6-SLLAX680 Under construction	Solar	8.9 km	1.3
Fordyce - SLLAX680 Under construction	Solar	8.9 km	1.3
Torrance Dis Ctr 2 - SLLAX100 Under construction	Solar	12.4 km	1.4
Westminster Reliability Project, LLC Under construction	Storage	19.7 km	110
Cobalt Under construction	Solar + storage	21.9 km	250

Sources EIA-860M · CAISO

Sources

EIA-860MOpen license · retrieved Nov 4, 2026
CAISOOpen license, with credit · retrieved Nov 11, 2026Source: California ISO

Attribution