How big is AES Alamitos Energy Center?

AES Alamitos Energy Center has a reported capacity of 678 MW. Source: EIA Form 860M.

What kind of plant is AES Alamitos Energy Center?

AES Alamitos Energy Center is a Natural Gas Fired Combined Cycle facility in Los Angeles County, CA, participating in the CAISO market.

Where is AES Alamitos Energy Center located?

AES Alamitos Energy Center is in Los Angeles County, CA, inside the CAISO balancing area.

Who operates AES Alamitos Energy Center?

AES Alamitos Energy Center is operated by AES Alamitos Energy, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does AES Alamitos Energy Center generate?

AES Alamitos Energy Center reported 1,218.7 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

How does AES Alamitos Energy Center compare to other plants?

By capacity, AES Alamitos Energy Center ranks #195 of 538 operating plants of the same technology nationally. It ranks #12 of 64 in CA.

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AES Alamitos Energy Center

AES Alamitos Energy, LLC - Los Angeles County - CAISO

AES Alamitos Energy Center (EIA plant 62115) is a 678-megawatt natural-gas-fired combined-cycle generating station located at 690 North Studebaker Road in Long Beach, Los Angeles County, California. Commercial operations began on February 6, 2020. The plant replaces aging generation at the predecessor Alamitos Generating Station site and provides reliable, high-efficiency natural-gas generation contracted to Southern California Edison under a 20-year tolling agreement. AES Alamitos Energy, LLC owns and operates the facility as part of the broader AES Southland Energy portfolio.

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CAISO · Asset profile

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AES Alamitos Energy Center — 678 MW gas plant, CA · Ask the Grid

Overview

Nameplate capacity: 678 MW
Canonical EIA plant baseline.
Registry anchor: Plant 62115
plant-62115

Structured profile

Technology: Natural Gas Fired Combined Cycle
Operator: AES Alamitos Energy, LLC

Related assets

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AES Huntington Beach Energy Project

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Compare with this plant

El Segundo Energy Center LLC

Natural Gas · 537.4 MW

Los Angeles County

Same typeComparable scale21 mi away

Units and generators

Operating generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
1A	231 MW 194 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Feb 2020	Operating
1B	231 MW 194 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Feb 2020	Operating
1S	216 MW 215 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Feb 2020	Operating

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 678 MW
National rank: #195
CA rank: #12

Monthly generation

Download CSV

Latest 12 months

1.22 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

24.9%

Grid and market context

Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.

Nearby substations

HIFLD infrastructure inventory

ALAMITOS

IN SERVICE · 230 kV

0.5 km

HAYNES

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Transactions and agreements

Asset Operational

Feb 6, 2020

AES's FERC-registered-entities page identifies February 6, 2020 as the start of commercial operations for the approximately 640 MW AES Alamitos Energy generation station; EIA-based records identify the same facility as plant 62115 with 678 MW of nameplate capacity.

AES Alamitos Energy, LLC

aes.com

Related parties and identifiers

Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.

Relationship graph

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AssetOwner / operatorOfftakerContractorEquipmentMarket / regulator

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

1998
1998
AES acquisition of predecessor stationlatimes.com
AES acquired the existing Alamitos generating station from Southern California Edison as part of a three-plant transaction valued at $781 million in aggregate; no Alamitos-specific allocation of that consideration was disclosed.
Dec 27, 2013
Dec 27, 2013

AES Alamitos Energy Center

Ask about AES Alamitos Energy Center

AES Alamitos Energy Center

Ask about AES Alamitos Energy Center

Overview

Structured profile

Related assets

AES Huntington Beach Energy Project

El Segundo Energy Center LLC

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Nearby substations

Commercial, land, and environmental record

Transactions and agreements

Related parties and identifiers

Relationship graph

Timeline and sources

Project timeline

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Parties and identifiers

Reporting portfolio

Sources

Common questions about AES Alamitos Energy Center

How big is AES Alamitos Energy Center?

What kind of plant is AES Alamitos Energy Center?

Where is AES Alamitos Energy Center located?

Who operates AES Alamitos Energy Center?

How much electricity does AES Alamitos Energy Center generate?

How does AES Alamitos Energy Center compare to other plants?

Co-located assets