Natural Gas Fired Combined CycleNYISO · Queens Countyplant:plant-55375

Astoria Energy

Astoria Energy LLC - Queens County - NYISO

Astoria Energy is a natural-gas-fired combined-cycle generating facility located at 17-10 Steinway Street in Queens County, New York.

Overview

Key fields

Nameplate capacity
595 MW

Canonical EIA plant baseline.

Registry anchor
Plant 55375

plant-55375

Structured profile

Technology
Natural Gas Fired Combined Cycle
Operator
Astoria Energy LLC

Units and generators

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

GeneratorCapacityTechnologyOperationStatus
CT1170 MW
165 MW summer
Natural Gas Fired Combined Cycle
Natural Gas · CT
May 2006Operating
CT2170 MW
165 MW summer
Natural Gas Fired Combined Cycle
Natural Gas · CT
May 2006Operating
ST1255 MW
228 MW summer
Natural Gas Fired Combined Cycle
Natural Gas · CA
May 2006Operating

Performance

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

Peer context

Technology capacity
595 MW
Natural Gas Fired Combined Cycle
National rank
#253
of 538 operating peers
NY rank
#8
of 39 operating peers

Monthly generation

Download CSV
Latest 12 months
3.99 TWh
Reported net generation
Latest report
Apr 2026
EIA-923 monthly filing
2025 capacity factor
74.8%
Using current reported nameplate capacity
May 2023: 364.6 GWh2023-05Jun 2023: 341.8 GWhJul 2023: 405 GWhAug 2023: 393.7 GWhSep 2023: 280.7 GWhOct 2023: 370.4 GWhNov 2023: 379.3 GWh2023-11Dec 2023: 371.1 GWhJan 2024: 361.7 GWhFeb 2024: 366.7 GWhMar 2024: 375.9 GWhApr 2024: 242.5 GWhMay 2024: 373.9 GWh2024-05Jun 2024: 357.1 GWhJul 2024: 393.6 GWhAug 2024: 389.3 GWhSep 2024: 359.1 GWhOct 2024: 371.1 GWhNov 2024: 202.7 GWh2024-11Dec 2024: 363.8 GWhJan 2025: 396.1 GWhFeb 2025: 356.5 GWhMar 2025: 361.1 GWhApr 2025: 230.7 GWhMay 2025: 348.3 GWh2025-05Jun 2025: 363.7 GWhJul 2025: 402.5 GWhAug 2025: 386.9 GWhSep 2025: 280.4 GWhOct 2025: 163.7 GWhNov 2025: 215.1 GWh2025-11Dec 2025: 394.7 GWhJan 2026: 398.7 GWhFeb 2026: 376.6 GWhMar 2026: 348.5 GWhApr 2026: 311.3 GWh2026-04

Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.

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
IN SERVICE · 345 kV
0.2 km
IN SERVICE · 345 kV
0.6 km
IN SERVICE · 138 kV
0.8 km
IN SERVICE · 138 kV
1.2 km
NOT AVAILABLE · 138 kV
1.4 km

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

Development Commenced
1999
SCS Energy LLC started development of the Astoria Energy project in 1999 and held an equity interest in the plant.
SCS Energy LLC
power-eng.com
Acquisition Closed
Jun 22, 2020
Astoria Power Partners Holding LLC acquired 100% of the holdings in Astoria Project Partners LLC, the parent of Astoria Energy LLC. The same transaction also transferred approximately 55% of Astoria Project Partners II LLC (the parent of adjacent Astoria Energy II), but that portion relates to a separate facility.
Astoria Power Partners Holding LLC · Astoria Project Partners LLC · ENGIE · Mitsui & Co. · Harbert Power Fund III, LLC · Harbert Power Fund V, LLC · JEMB Family L.P. · Ares EIF Management, LLC
engie-na.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

Drag organizations to explore the network. Select a node to pin its details and available page link.

AssetOwner / operatorFinancier

Parties and identifiers

RelationshipEntityBasis
Owner / operatorAstoria Energy LLCAsset owner and operator
Parent companyAstoria Project Partners LLCDirect parent of Astoria Energy LLC
Parent companyAstoria Power Partners Holding LLCCurrent controlling parent entity
Former owner / sellerENGIEHistorical seller and former investor
Developer / equity investorSCS Energy LLCOriginal developer and historical equity participant
Grid selectionplant:plant-55375Canonical asset page /nyiso/assets/plant/astoria-energy.

Reporting portfolio

EIA reporting entity
Astoria Energy LLC
Entity 22979
Operating portfolio
1 plants
1 states
Reported capacity
595 MW
Natural Gas Fired Combined Cycle

Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

  1. Development Commencedpower-eng.c...

    SCS Energy LLC started development of the Astoria Energy project in 1999 and held an equity interest in the plant.

  2. Generators enter operationEIA-860

    EIA-860 lists generator CT1, generator CT2, generator ST1 with this operating date.

  3. Sale Closedengie-na.com

    Astoria Power Partners Holding LLC acquired 100% of the holdings in Astoria Project Partners LLC, the parent of Astoria Energy LLC. The same transaction also transferred approximately 55% of Astoria Project Partners II LLC (the parent of adjacent Astoria Energy II), but that portion relates to a separate facility.

Common questions about Astoria Energy

Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.

How big is Astoria Energy?

Astoria Energy has a reported capacity of 595 MW. Source: EIA Form 860M.

What kind of plant is Astoria Energy?

Astoria Energy is a Natural Gas Fired Combined Cycle facility in Queens County, NY, participating in the NYISO market.

Where is Astoria Energy located?

Astoria Energy is in Queens County, NY, inside the NYISO balancing area.

Who operates Astoria Energy?

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

How much electricity does Astoria Energy generate?

Astoria Energy reported 3,990.5 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

How does Astoria Energy compare to other plants?

By capacity, Astoria Energy ranks #253 of 538 operating plants of the same technology nationally. It ranks #8 of 39 in NY.

Asset analyst
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