Natural Gas Fired Combustion TurbineNYISO · Kings Countyplant:plant-2499

Narrows Gas Turbines Generating

Astoria Generating Company, L.P. - Kings County - NYISO

Narrows Generating Station is a 322 MW floating power station located in Brooklyn along the east side of Upper New York Bay. The facility consists of 16 simple-cycle combustion-turbine units on two floating power barges moored to a pier in the Bay Ridge Channel. All units are dual-fuel capable, operating primarily on natural gas with distillate fuel oil (ULSD) as backup. The turbines, installed in May 1972, are GE Frame 5N units with approximately 22 MW nameplate capacity each. Sixteen starting engines fueled by ULSD were added in January 1993. The station provides critical peaking capacity, can be started in fifteen minutes, and offers black-start capability for system restoration. NYISO determined that Narrows Units 1 and 2 are needed for New York City Zone J reliability through May 1, 2029.

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Overview

Key fields

Nameplate capacity: 308 MW
Canonical EIA plant baseline.
Registry anchor: Plant 2499
plant-2499

Structured profile

Technology: Natural Gas Fired Combustion Turbine
Operator: U S Power Generating Company LLC

Units and generators

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

Generator	Capacity	Technology	Operation	Status
NT11	22 MW 21 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	May 1972	Operating
NT12	22 MW 19.5 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	May 1972	Operating
NT13	22 MW 20.4 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	May 1972	Operating
NT14	22 MW 20.1 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	May 1972	Operating
NT15	22 MW 19.8 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	May 1972	Operating
NT16	22 MW 18.9 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	May 1972	Operating
NT17	22 MW 18.4 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	May 1972	Operating
NT18	22 MW 19.9 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	May 1972	Operating
NT21	22 MW 19.4 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 1972	Operating
NT22	22 MW 18.7 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 1972	Operating
NT23	22 MW 18.4 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 1972	Operating
NT24	22 MW 18.4 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 1972	Operating
NT25	22 MW 19.9 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 1972	Operating
NT26	22 MW 18.1 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 1972	Operating
NT27	22 MW 20.7 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 1972	Operating
NT28	22 MW 17.5 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 1972	Operating

Performance

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

Peer context

Technology capacity: 352 MW
National rank: #154
NY rank: #2

Monthly generation

Download CSV

Latest 12 months

39.6 GWh

Reported net generation

Latest report

Dec 2024

EIA-923 monthly filing

2024 capacity factor

1.5%

Using current reported nameplate capacity

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

GOWANUS

IN SERVICE · 345 kV

2.1 km

UNKNOWN124209

IN SERVICE

2.4 km

GREENWOOD

NOT AVAILABLE

2.6 km

BENSONHURST

NOT AVAILABLE

4.8 km

CLIFTON

NOT AVAILABLE

5.3 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

Equipment Addition

Jan 1, 1993

Sixteen starting engines (ULSD-fired, 600 HP each) were installed on the two floating barges to provide black-start capability and auxiliary power.

extapps.dec.ny.gov

Deactivation Notice

Jun 1, 2025

AlphaGen submitted Notices of Intent to Retire the Narrows and Gowanus facilities pursuant to the New York Peaker Rule and the applicable NYISO operating period.

Alpha Generation (AlphaGen)

prnewswire.com

Repowering Proposal

Mar 19, 2026

AlphaGen proposed replacing six peaking units at Gowanus and Narrows with three lower-emitting generation units in response to Con Edison's solicitation for solutions to New York City reliability needs.

Alpha Generation (AlphaGen)

rtoinsider.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 / operatorMarket / regulatorEquipment

Parties and identifiers

Relationship	Entity	Basis
Owner	Astoria Generating Company, L.P.	owner/permittee
Owner / asset manager	Eastern Generation, LLC	portfolio owner
Owner / asset manager	Alpha Generation (AlphaGen)	portfolio owner/manager
Parent company / equity investor	ArcLight Capital Partners, LLC	investment sponsor
Former owner	Consolidated Edison Company of New York Inc.	predecessor utility owner
Former owner / seller	Tenaska Capital Management, LLC	portfolio seller (2015)
Regulator / regulatory counterparty	New York State Department of Environmental Conservation	environmental regulator
Equipment supplier	GE Vernova	current OEM / product domain
Grid selection	plant:plant-2499	Canonical asset page /nyiso/assets/plant/narrows-gas-turbines-generating.

Reporting portfolio

EIA reporting entity

U S Power Generating Company LLC

Entity 54863

Operating portfolio

3 plants

1 states

Reported capacity

1,551 MW

Natural Gas Fired Combustion Turbine · Natural Gas Steam Turbine

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
Astoria Generating Station	943 MW	NY
Narrows Gas Turbines GeneratingCurrent	308 MW	NY
Gowanus Gas Turbines Generating	300 MW	NY

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

View full reporting portfolio

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

May 1972
May 1972
Generators enter operationEIA-860
EIA-860 lists generator NT11, generator NT12, generator NT13, generator NT14, generator NT15, generator NT16, generator NT17, generator NT18 with this operating date.
Jun 1972
Jun 1972
Generators enter operationEIA-860
EIA-860 lists generator NT21, generator NT22, generator NT23, generator NT24, generator NT25, generator NT26, generator NT27, generator NT28 with this operating date.
Jan 1, 1993
Jan 1, 1993
Starting Engine Installationextapps.dec...
Sixteen starting engines (ULSD-fired, 600 HP each) were installed on the two floating barges to provide black-start capability and auxiliary power.
Jun 1, 2025
Jun 1, 2025
Retirement Notices Submittedprnewswire....
AlphaGen submitted Notices of Intent to Retire the Narrows and Gowanus facilities pursuant to the New York Peaker Rule and the applicable NYISO operating period.
Mar 19, 2026
Mar 19, 2026
AlphaGen Repowering Proposalrtoinsider....
AlphaGen proposed replacing six peaking units at Gowanus and Narrows with three lower-emitting generation units in response to Con Edison's solicitation for solutions to New York City reliability needs.
Apr 16, 2026
Apr 16, 2026
Retirement Notices Withdrawn; Continued Operation Required Until May 1,…prnewswire....
AlphaGen withdrew the Notices of Intent to Retire for Narrows Units 1 and 2 after NYISO Short-Term Reliability Process determined that Narrows and Gowanus must continue operating to address New York City Zone J reliability needs through May 1, 2029.

Sources

PublisherReferenceType

U.S. Energy Information AdministrationEIA-860 generator inventoryFederal registry

U.S. Energy Information AdministrationEIA-923 generation filingsFederal filing

documents.dps.ny.govdocuments.dps.ny.govauthoritative

Common questions about Narrows Gas Turbines Generating

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

How big is Narrows Gas Turbines Generating?

Narrows Gas Turbines Generating has a reported capacity of 308 MW. Source: EIA Form 860M.

What kind of plant is Narrows Gas Turbines Generating?

Narrows Gas Turbines Generating is a Natural Gas Fired Combustion Turbine facility in Kings County, NY, participating in the NYISO market.

Where is Narrows Gas Turbines Generating located?

Narrows Gas Turbines Generating is in Kings County, NY, inside the NYISO balancing area.

Who operates Narrows Gas Turbines Generating?

Narrows Gas Turbines Generating is operated by U S Power Generating Company LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Narrows Gas Turbines Generating generate?

Narrows Gas Turbines Generating reported 39.6 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.

How does Narrows Gas Turbines Generating compare to other plants?

By capacity, Narrows Gas Turbines Generating ranks #154 of 825 operating plants of the same technology nationally. It ranks #2 of 31 in NY.

Co-located assets

Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.