How big is Glenwood Landing?

Glenwood Landing has a reported capacity of 106 MW. Source: EIA Form 860M.

What kind of plant is Glenwood Landing?

Glenwood Landing is a Natural Gas Fired Combustion Turbine facility in Nassau County, NY, participating in the NYISO market.

Where is Glenwood Landing located?

Glenwood Landing is in Nassau County, NY, inside the NYISO balancing area.

Who operates Glenwood Landing?

Glenwood Landing is operated by National Grid Generation LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Glenwood Landing generate?

Glenwood Landing reported 129.2 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.

How does Glenwood Landing compare to other plants?

By capacity, Glenwood Landing ranks #360 of 825 operating plants of the same technology nationally. It ranks #6 of 31 in NY.

Glenwood Landing — 106 MW gas plant, Nassau County, NY

Ask the Grid/

Create free workspace

Ask the Grid

Create free workspace

Glenwood Landing — 106 MW gas plant, Nassau County, NY · Ask the Grid

Overview

Nameplate capacity: 106 MW
Canonical EIA plant baseline.
Registry anchor: Plant 7869
plant-7869

Structured profile

Technology: Natural Gas Fired Combustion Turbine
Operator: National Grid Generation LLC

Related assets

Similar plants ranked by technology, capacity, and distance.

Edgewood Energy LLC

Natural Gas · 100 MW

Suffolk County

Same typeComparable scale19 mi away

Compare with this plant

Hell Gate

Natural Gas · 94 MW

Bronx County

Same typeComparable scale14 mi away

Compare with this plant

Units and generators

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

Generator	Capacity	Technology	Operation	Status
GT1	16 MW 12.6 MW summer	Petroleum Liquids Disillate Fuel Oil · GT	Apr 1967	Operating
GT4	53 MW 42.6 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 2002	Operating
GT5	53 MW 42.5 MW summer	Natural Gas Fired Combustion Turbine Natural Gas · GT	Jun 2002	Operating

Performance

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

Peer context

Technology capacity: 106 MW
National rank: #360
NY rank: #6

Monthly generation

Download CSV

Latest 12 months

129.2 GWh

Reported net generation

Latest report

Dec 2024

EIA-923 monthly filing

2024 capacity factor

13.9%

Using current reported nameplate capacity

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

GLENWOOD LANDING

IN SERVICE · 69 kV

0.1 km

UNKNOWN129555

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

Project Award

Jul 2011

TRC Companies awarded contract for owner's engineering services for the decommissioning, demolition, and restoration of the Glenwood Landing Generating Site; scope includes program management, structural surveys, asbestos and regulated material surveys, environmental assessment, power delivery engineering, permitting, closure of cooling water structures, and construction oversight

National Grid Generation LLC · TRC Companies

trccompanies.com

Project Completion

Jun 2015

TRC Companies completion of owner's engineering services and decommissioning project for the Glenwood Landing Generating Site; approximately 200 MW generating facility decommissioned in accordance with approved plans

National Grid Generation LLC · TRC Companies

trccompanies.com

Operation Report

Mar 18, 2026

Newsday reports that Glenwood Landing peaker cluster ran continuously for approximately 168 hours, indicating active dispatch during winter peak demand period on Long Island

National Grid Generation LLC

newsday.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.

AssetContractorMarket / regulatorEquipment

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Apr 1967
Apr 1967
Generator enters operationEIA-860
EIA-860 lists generator GT1 with this operating date.
May 28, 1998
May 28, 1998
Acquisition of LILCO Non-Nuclear Generation Assets

Reporting portfolio

EIA reporting entity

National Grid Generation LLC

Entity 56505

Operating portfolio

11 plants

1 states

Reported capacity

3,877 MW

Natural Gas Fired Combustion Turbine · Natural Gas Steam Turbine · Petroleum Liquids

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
Northport	1,564 MW	NY
E F Barrett	669.2 MW	NY
Holtsville	567 MW	NY
Port Jefferson	498 MW	NY
Wading River	238.5 MW	NY
Glenwood	110 MW	NY
Glenwood LandingCurrent	106 MW	NY
Shoreham	71.5 MW	NY

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

View full reporting portfolio

Glenwood Landing