# AES Huntington Beach LLC CAISO Natural Gas Steam Turbine · https://askthegrid.com/assets/facilities/aes-huntington-beach-llc AES Huntington Beach LLC is a natural gas-fired power facility with 218 MW of EIA-reported nameplate capacity in Orange County, California, registered as EIA Plant ID 335. AES Huntington Beach LLC owns and operates the plant, a subsidiary of The AES Corporation. The plant's generating configuration is one Unit 2 natural-gas-fired steam-turbine/boiler generating unit and EIA codes NG/ST. Commercial operation began in 1958. ## Key facts - Technology: Natural Gas Steam Turbine - Power capacity: 218 MW - Commercial operation: 1958 - Operating status: operating ## Grid and market context - ISO/RTO: CAISO - Balancing authority: CAISO - Substation: Huntington Beach Switching Station (HUNTGBCH bus 24069) - Point of interconnection: Huntington Beach Switching Station (HUNTGBCH bus 24069) - Transmission owner: Southern California Edison - Interconnection voltage: 230 kV ## Source-backed facts - Identifiers: [{"value":"335","system":"EIA plant ID"},{"value":"23693","system":"EIA entity ID"},{"value":"2","system":"EIA generator ID"},{"value":"NG","system":"EIA energy source code"},{"value":"ST","system":"EIA prime mover code"},{"value":"caiso-gen-335","system":"CAISO node ID"},{"value":"00-AFC-13","system":"CEC docket"}] — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Description: AES Huntington Beach LLC is an independent power producer in Huntington Beach, Orange County, California, identified by EIA plant ID 335. EIA lists generator 2 at 225.8 MW with natural-gas and steam-turbine codes NG and ST. The California Energy Commission identifies the corresponding legacy Huntington Beach Generating Station Unit 2 as a natural-gas-fired boiler with approximately 225 MW of net output at 21730 Newland Street. — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Parties: [{"relationship":"Owner and FERC-registered entity","name":"AES Huntington Beach, LLC","official_url":"https://www.aes.com/ferc-registered-entities"},{"relationship":"Indirect parent company","name":"The AES Corporation","official_url":"https://www.aes.com/"},{"relationship":"230-kilovolt switchyard owner","name":"Southern California Edison","official_url":"https://www.sce.com/"},{"relationship":"Natural gas supplier","name":"Southern California Gas Company","official_url":"https://www.socalgas.com/"},{"relationship":"Process and potable water supplier","name":"City of Huntington Beach","official_url":"https://www.huntingtonbeachca.gov/"}] — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Identifiers.6: {"value":"00-AFC-13","system":"CEC docket"} — Huntington Beach Generating Station | California Energy Commission · confidence: high - Parties.2: {"relationship":"230-kilovolt switchyard owner","name":"Southern California Edison","official_url":"https://www.sce.com/"} — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Parties.3: {"relationship":"Natural gas supplier","name":"Southern California Gas Company","official_url":"https://www.socalgas.com/"} — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Parties.4: {"relationship":"Process and potable water supplier","name":"City of Huntington Beach","official_url":"https://www.huntingtonbeachca.gov/"} — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Construction scope: One operating legacy natural-gas-fired steam-turbine generating unit at AES Huntington Beach LLC: one boiler and one conventional steam turbine, with a nominal output of approximately 225 MW and EIA net summer capacity of 225.8 MW. The unit is the legacy Huntington Beach Generating Station Unit 2, not the separate Huntington Beach Energy Project. — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Product url: https://www.gevernova.com/gas-power/products/steam-turbines — Steam Turbine Power Plant Solutions · confidence: medium - Product url: https://www.gevernova.com/gas-power/products/steam-turbines — Large-Scale Utility Boiler Manufacturer · confidence: medium - Kind: thermal — Huntington Beach Generating Station | California Energy Commission · confidence: high - Description: AES Huntington Beach LLC owns and operates the legacy Huntington Beach Generating Station at 21730 Newland Street in Huntington Beach, Orange County. The EIA plant-335 asset corresponds to the station’s approximately 225 MW natural-gas-fired Unit 2, using boiler and steam-turbine technology. Southern California Edison sold the Huntington Beach station to AES in or about May 1998 as part of a three-station portfolio transaction. Unit 2 received an operating extension through the end of 2023, while the separately identified Huntington Beach Energy Project replaced other legacy capacity at the same site and began combined-cycle operation in 2020. — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Description: AES Huntington Beach LLC owns and operates the legacy Huntington Beach Generating Station at 21730 Newland Street in Huntington Beach, Orange County. The EIA plant-335 asset corresponds to the station’s approximately 225 MW natural-gas-fired Unit 2, using boiler and steam-turbine technology. Southern California Edison sold the Huntington Beach station to AES in or about May 1998 as part of a three-station portfolio transaction. Unit 2 received an operating extension through the end of 2023, while the separately identified Huntington Beach Energy Project replaced other legacy capacity at the same site and began combined-cycle operation in 2020. — 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22... · confidence: medium - Description: AES Huntington Beach LLC owns and operates the legacy Huntington Beach Generating Station at 21730 Newland Street in Huntington Beach, Orange County. The EIA plant-335 asset corresponds to the station’s approximately 225 MW natural-gas-fired Unit 2, using boiler and steam-turbine technology. Southern California Edison sold the Huntington Beach station to AES in or about May 1998 as part of a three-station portfolio transaction. Unit 2 received an operating extension through the end of 2023, while the separately identified Huntington Beach Energy Project replaced other legacy capacity at the same site and began combined-cycle operation in 2020. — Huntington Beach Energy Project | California Energy Commission · confidence: medium - Quality notes: ["Plant 335 should be treated as the legacy Huntington Beach Generating Station Unit 2, not merged with the separately identified Huntington Beach Energy Project, which has a different EIA plant identifier and configuration.","The $781 million acquisition consideration covered three stations—Alamitos, Huntington Beach, and Redondo Beach—and was not allocated to Huntington Beach in the cited records.","The 2017 Southland financing covered a multi-site repowering portfolio including Alamitos, Huntington Beach, and Redondo Beach; no plant-335-specific financing allocation was disclosed.","The CEC documents an extension for legacy Unit 2 through the end of 2023, but the cited record does not establish a definitive subsequent retirement date for Unit 2. Reported capacities also vary by measure, including approximately 225 MW net and 225.8 MW in EIA generator data."] — Huntington Beach Energy Project | California Energy Commission · confidence: medium - Quality notes: ["Plant 335 should be treated as the legacy Huntington Beach Generating Station Unit 2, not merged with the separately identified Huntington Beach Energy Project, which has a different EIA plant identifier and configuration.","The $781 million acquisition consideration covered three stations—Alamitos, Huntington Beach, and Redondo Beach—and was not allocated to Huntington Beach in the cited records.","The 2017 Southland financing covered a multi-site repowering portfolio including Alamitos, Huntington Beach, and Redondo Beach; no plant-335-specific financing allocation was disclosed.","The CEC documents an extension for legacy Unit 2 through the end of 2023, but the cited record does not establish a definitive subsequent retirement date for Unit 2. Reported capacities also vary by measure, including approximately 225 MW net and 225.8 MW in EIA generator data."] — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Financing summary: AES completed the acquisition of three Southern California Edison stations, including Huntington Beach, for $781 million in or about May 1998; this was portfolio sale consideration rather than plant-335-specific financing. In July 2017, AES closed approximately $2.0 billion of long-term non-recourse financing for the broader $2.3 billion Southland repowering project. The financing comprised approximately $1.475 billion of senior secured notes and a $492 million senior secured term loan, with about $350 million of AES equity; lenders included 19 banks and 52 note purchasers. The 2017 financing covered a multi-site 1,284 MW combined-cycle and 100 MW storage project and was not allocated to EIA plant 335. — AES closes on $2.3bn California repowering project · confidence: medium - Timeline.0: {"event":"Original construction and commercial operation of Units 1 and 2","date":"1958","detail":"The California Public Utilities Commission records Units 1 and 2 of the Huntington Beach Generating Station as commercially operational in 1958; EIA plant 335 corresponds to the legacy Unit 2 resource."} — BDL Comment Resolution EGPB 12 AES Huntington Beach · confidence: high - Timeline.1: {"event":"Commercial operation of Units 3 and 4","date":"1960","detail":"The same station history records Units 3 and 4 as commercially operational in 1960."} — BDL Comment Resolution EGPB 12 AES Huntington Beach · confidence: high - Timeline.2: {"event":"Sale announced by Southern California Edison","date":"1997-11","detail":"Southern California Edison announced the sale of ten gas-fired plants, including Huntington Beach, to multiple buyers; AES acquired Huntington Beach as part of a three-station package."} — Edison Sells 10 Gas-Fired Plants · confidence: high - Timeline.3: {"event":"Acquisition by AES from Southern California Edison","date":"1998-05","detail":"On or about May 1998, AES Huntington Beach acquired the Huntington Beach electricity-generation facility from Southern California Edison. The three-station AES purchase price was $781 million."} — 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22... · confidence: high - Timeline.4: {"event":"CEC certification and legacy-unit retooling","date":"2001-05-10","detail":"The CEC certified the Huntington Beach Generating Station retool project. AES retooled Units 3 and 4 with new natural-gas burners, burner-management systems, draft fans, and selective catalytic reduction equipment; these units had been out of service since 1995."} — Huntington Beach Generating Station | California Energy Commission · confidence: high - Timeline.5: {"event":"Retool project commercial operation","date":"2003-08-07","detail":"The CEC records August 7, 2003 as the commercial-operation date for the certified natural-gas-fired retool project."} — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Timeline.7: {"event":"Units 3 and 4 converted for voltage support","date":"2012","detail":"AES obtained CEC approval to convert the retooled Units 3 and 4 to synchronous condensers to provide voltage support required for the Los Angeles Basin by CAISO."} — Huntington Beach Generating Station | California Energy Commission · confidence: high - Timeline.9: {"event":"CEC certification of separate Huntington Beach Energy Project","date":"2017-04-12","detail":"The CEC certified the separate Huntington Beach Energy Project, a reconfiguration comprising a 640 MW combined-cycle block and two simple-cycle turbines totaling 200 MW; it replaced legacy-site capacity but is not the EIA plant-335 Unit 2 asset."} — Huntington Beach Energy Project | California Energy Commission · confidence: high - Timeline.11: {"event":"Retirement of legacy Unit 1","date":"2019-12","detail":"Unit 1 was retired approximately in December 2019 to facilitate first fire and commercial operation of the separate Huntington Beach Energy Project combined-cycle units."} — Huntington Beach Generating Station | California Energy Commission · confidence: high - Timeline.12: {"event":"Separate Huntington Beach Energy Project combined-cycle operation","date":"2020-06-25","detail":"The CEC records the separate 644 MW combined-cycle gas-turbine generator at the Huntington Beach Energy Project as beginning operation on June 25, 2020."} — Source · confidence: high - Timeline.13: {"event":"Legacy Unit 2 operating extension","date":"2023-12","detail":"The CEC records an extension allowing legacy Unit 2 to operate through the end of 2023 in support of peak demand; no definitive later retirement date is established in the cited record."} — Huntington Beach Generating Station | California Energy Commission · confidence: high - Quality notes.0: Plant 335 should be treated as the legacy Huntington Beach Generating Station Unit 2, not merged with the separately identified Huntington Beach Energy Project, which has a different EIA plant identifier and configuration. — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Quality notes.0: Plant 335 should be treated as the legacy Huntington Beach Generating Station Unit 2, not merged with the separately identified Huntington Beach Energy Project, which has a different EIA plant identifier and configuration. — Huntington Beach Energy Project | California Energy Commission · confidence: medium - Quality notes.2: The 2017 Southland financing covered a multi-site repowering portfolio including Alamitos, Huntington Beach, and Redondo Beach; no plant-335-specific financing allocation was disclosed. — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Quality notes.3: The CEC documents an extension for legacy Unit 2 through the end of 2023, but the cited record does not establish a definitive subsequent retirement date for Unit 2. Reported capacities also vary by measure, including approximately 225 MW net and 225.8 MW in EIA generator data. — Huntington Beach Generating Station | California Energy Commission · confidence: medium - Commercial parties.0: {"relationship":"Owner and operator","name":"AES Huntington Beach, LLC","detail":"Owner and operator of the legacy Huntington Beach Generating Station, including the EIA plant-335 Unit 2 asset.","official_url":"https://www.aes.com/ferc-registered-entities"} — Huntington Beach Generating Station | California Energy Commission · confidence: high - Commercial parties.2: {"relationship":"Predecessor owner and switchyard owner","name":"Southern California Edison","detail":"Owned the Huntington Beach station before the 1998 sale to AES and owns the existing 230-kilovolt switchyard used by the site.","official_url":"https://www.sce.com/"} — Source · confidence: high - Commercial parties.5: {"relationship":"Natural-gas supplier","name":"Southern California Gas Company","detail":"Supplied natural gas to the station through an existing 30-inch-diameter pipeline.","official_url":"https://www.socalgas.com/"} — Source · confidence: high - Commercial parties.7: {"relationship":"Repowering EPC contractor","name":"Kiewit Power Constructors","detail":"Handled construction under a fixed-price, date-certain turnkey EPC contract for the broader Southland repowering project, including the separate Huntington Beach replacement facilities.","official_url":"https://www.kiewit.com/"} — AES closes $2B financing for 1.2 GW gas plant with storage | Utility Dive · confidence: high - Commercial parties.7: {"relationship":"Repowering EPC contractor","name":"Kiewit Power Constructors","detail":"Handled construction under a fixed-price, date-certain turnkey EPC contract for the broader Southland repowering project, including the separate Huntington Beach replacement facilities.","official_url":"https://www.kiewit.com/"} — AES Southland Projects · confidence: high - Acquisition date: 1998 — AES closes $2B financing for 1.2 GW gas plant with storage · confidence: medium - Seller: Southern California Edison — AES closes $2B financing for 1.2 GW gas plant with storage · confidence: medium - Acquirer: AES Southland — A Multi-Layered Reinvention: AES Southland Projects · confidence: medium - Transaction scope: portfolio_includes_asset — A Multi-Layered Reinvention: AES Southland Projects · confidence: medium - Replacement or repowering: The legacy Unit 2 is being replaced at the site by the approximately 644 MW Huntington Beach Energy Project combined-cycle facility, which began commercial operation in 2020; no separate post-2026 conversion of Unit 2 is identified. — Retirement delays of U.S. electric generating capacity may continue in 2026 - U.S. Energy Information Administration (EIA) · confidence: medium ## Timeline - 1958 — Original construction and commercial operation of Units 1 and 2 The California Public Utilities Commission records Units 1 and 2 of the Huntington Beach Generating Station as commercially operational in 1958; EIA plant 335 corresponds to the legacy Unit 2 resource. Source: BDL Comment Resolution EGPB 12 AES Huntington Beach (https://docs.cpuc.ca.gov/published/COMMENT_RESOLUTION/134146.htm) - 1960 — Commercial operation of Units 3 and 4 The same station history records Units 3 and 4 as commercially operational in 1960. Source: BDL Comment Resolution EGPB 12 AES Huntington Beach (https://docs.cpuc.ca.gov/published/COMMENT_RESOLUTION/134146.htm) - 1998-05 — Acquisition by AES from Southern California Edison On or about May 1998, AES Huntington Beach acquired the Huntington Beach electricity-generation facility from Southern California Edison. The three-station AES purchase price was $781 million. Source: AES Buys 3 Electricity-Producing Plants - Los Angeles Times (https://www.latimes.com/archives/la-xpm-1998-may-17-fi-50641-story.html) - 2001-05-10 — CEC certification and legacy-unit retooling The CEC certified the Huntington Beach Generating Station retool project. AES retooled Units 3 and 4 with new natural-gas burners, burner-management systems, draft fans, and selective catalytic reduction equipment; these units had been out of service since 1995. Source: Huntington Beach Generating Station | California Energy Commission (https://www.energy.ca.gov/powerplant/simple-cycle/huntington-beach-generating-station) - 2003-08-07 — Retool project commercial operation The CEC records August 7, 2003 as the commercial-operation date for the certified natural-gas-fired retool project. Source: Huntington Beach Generating Station | California Energy Commission (https://www.energy.ca.gov/powerplant/simple-cycle/huntington-beach-generating-station) - 2012 — Units 3 and 4 converted for voltage support AES obtained CEC approval to convert the retooled Units 3 and 4 to synchronous condensers to provide voltage support required for the Los Angeles Basin by CAISO. Source: Huntington Beach Generating Station | California Energy Commission (https://www.energy.ca.gov/powerplant/simple-cycle/huntington-beach-generating-station) - 2017-07 — Southland repowering financial close AES closed approximately $2.0 billion of non-recourse financing for the broader Southland repowering project, which included replacement facilities at Huntington Beach, Alamitos, and Redondo Beach. Source: AES closes $2B financing for 1.2 GW gas plant with storage (https://www.utilitydive.com/news/aes-closes-2b-financing-for-12-gw-gas-plant-with-storage/446538/) - 2019-12 — Retirement of legacy Unit 1 Unit 1 was retired approximately in December 2019 to facilitate first fire and commercial operation of the separate Huntington Beach Energy Project combined-cycle units. Source: Huntington Beach Generating Station | California Energy Commission (https://www.energy.ca.gov/powerplant/simple-cycle/huntington-beach-generating-station) - 2020-06-25 — Separate Huntington Beach Energy Project combined-cycle operation The CEC records the separate 644 MW combined-cycle gas-turbine generator at the Huntington Beach Energy Project as beginning operation on June 25, 2020. Source: Huntington Beach Energy Project | California Energy Commission (https://www.energy.ca.gov/powerplant/combined-cycle/huntington-beach-energy-project) - 2023-12 — Legacy Unit 2 operating extension The CEC records an extension allowing legacy Unit 2 to operate through the end of 2023 in support of peak demand; no definitive later retirement date is established in the cited record. Source: Huntington Beach Generating Station | California Energy Commission (https://www.energy.ca.gov/powerplant/simple-cycle/huntington-beach-generating-station) ## Sources - [AES' FERC Entities: Wind & Energy Storage](https://www.aes.com/ferc-registered-entities) — aes.com · tier other - [Huntington Beach Generating Station | California Energy Commission](https://www.energy.ca.gov/powerplant/simple-cycle/huntington-beach-generating-station) — energy.ca.gov · tier regulatory - [DOCKETED](https://efiling.energy.ca.gov/GetDocument.aspx?tn=211139) — efiling.energy.ca.gov · tier regulatory - [Source](https://energy.ca.gov/powerplant/simple-cycle/huntington-beach-generating-station) — energy.ca.gov · tier regulatory - [Steam Turbine Power Plant Solutions](https://www.gevernova.com/gas-power/products/steam-turbines) — gevernova.com · tier other - [Large-Scale Utility Boiler Manufacturer](https://www.babcock.com/home/products-services/steam-generators/utility-scale-boilers) — babcock.com · tier other - [Edison Sells 10 Gas-Fired Plants - Los Angeles Times](https://www.latimes.com/archives/la-xpm-1997-nov-25-fi-57429-story.html) — latimes.com · tier other - [BDL Comment Resolution EGPB 12 AES Huntington Beach](https://docs.cpuc.ca.gov/published/COMMENT_RESOLUTION/134146.htm) — docs.cpuc.ca.gov · tier regulatory - [AES Buys 3 Electricity-Producing Plants](https://www.latimes.com/archives/la-xpm-1998-may-17-fi-50641-story.html) — latimes.com · tier other - [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 ...](https://oag.ca.gov/system/files/attachments/press_releases/02-019williams.pdf) — oag.ca.gov · tier regulatory - [Huntington Beach Energy Project | California Energy Commission](https://www.energy.ca.gov/powerplant/combined-cycle/huntington-beach-energy-project) — energy.ca.gov · tier regulatory - [AES closes $2B financing for 1.2 GW gas plant with storage](https://www.utilitydive.com/news/aes-closes-2b-financing-for-12-gw-gas-plant-with-storage/446538/) — utilitydive.com · tier other - [AES closes on $2.3bn California repowering project](https://www.infrastructureinvestor.com/aes-closes-on-2-3bn-california-repowering-project/) — infrastructureinvestor.com · tier other - [AES Southland Projects](https://www.kiewit.com/projects/aes-southland-projects/) — kiewit.com · tier other - [Source](https://energy.ca.gov/powerplant/combined-cycle/huntington-beach-energy-project) — energy.ca.gov · tier regulatory - [A Multi-Layered Reinvention: AES Southland Projects](https://www.powermag.com/a-multi-layered-reinvention-aes-southland-projects/) — powermag.com · tier other - [California starts review of new AES Huntington Beach ...](https://www.reuters.com/article/world/uk/california-starts-review-of-new-aes-huntington-beach-power-plant-idUSBRE8790HB/) — reuters.com · tier other - [AES HUNTINGTON BEACH GENERATING STATION ...](https://efiling.energy.ca.gov/GetDocument.aspx?tn=19222&DocumentContentId=66508) — efiling.energy.ca.gov · tier regulatory - [Retirement delays of U.S. electric generating capacity may continue in 2026 - U.S. Energy Information Administration (EIA)](https://www.eia.gov/todayinenergy/detail.php?id=67206) — eia.gov · tier regulatory ## Data quality - Plant 335 should be treated as the legacy Huntington Beach Generating Station Unit 2, not merged with the separately identified Huntington Beach Energy Project, which has a different EIA plant identifier and configuration. The $781 million acquisition consideration covered three stations—Alamitos, Huntington Beach, and Redondo Beach—and was not allocated to Huntington Beach in the cited records. The 2017 Southland financing covered a multi-site repowering portfolio including Alamitos, Huntington Beach, and Redondo Beach; no plant-335-specific financing allocation was disclosed. The CEC documents an extension for legacy Unit 2 through the end of 2023, but the cited record does not establish a definitive subsequent retirement date for Unit 2. Reported capacities also vary by measure, including approximately 225 MW net and 225.8 MW in EIA generator data. --- Canonical page: https://askthegrid.com/assets/facilities/aes-huntington-beach-llc Source: Ask the Grid — https://askthegrid.com/