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669.2 MW Natural Gas Fired Combustion Turbine (293 MW) + Natural Gas Steam Turbine (376 MW) operating in Nassau, NY — New York Independent System Operator
669.2 MW
Nameplate Capacity
13
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combustion Turbine + Natural Gas Steam Turbine
1956
Operating Since
Coordinates
40.6167, -73.6479
County
Nassau, NY
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | National Grid Generation LLC | National Grid Generation | — |
| Owner(s) | National Grid Generation LLC | National Grid | — |
| Status | Operating | — | — |
The E. F. Barrett Power Station is a power plant in Nassau County, New York, United States. The main plant is in Barnum Island, with outlying facilities in neighboring Island Park and Oceanside. It is operated by National Grid USA.
Read more on WikipediaThe E F Barrett power plant, located in Nassau County, New York, has a total capacity of 669.2 MW across 13 generators. The plant, owned by National Grid and operated by National Grid Generation LLC, primarily uses natural gas as its fuel source, employing both natural gas-fired combustion turbine and natural gas steam turbine technologies. Commissioned in 1956, the facility is considered a hybrid plant.
In the most recent year of reported generation, the plant produced 1,169,754 MWh of electricity, operating at a capacity factor of 20.0%. The E F Barrett plant operates within the New York Independent System Operator (NYISO) balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. It is ranked as the 13th largest power plant out of 38 in New York State, and 345th out of 945 nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
NYISO
Market
ISO/RTO Member
NERC Region
NPCC — Northeast Power Coordinating Council
Balancing Authority
New York Independent System Operator (NYIS)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
84.2K MWh
Latest Month
1.2M MWh
Annual Generation
20.0%
Capacity Factor
CO₂ Intensity
1319 lb/MWh
NOx
1 lb/MWh
SO₂
0.033 lb/MWh
CH₄
0.026 lb/MWh
N₂O
0.003 lb/MWh
Capacity Factor
24.4%
Annual Net Gen
1428 GWh
CO₂eq
1320 lb/MWh
Subregion
NPCC Long Island
2013
$965/kW
Est. Construction Cost
Total estimated cost: $645.9M
Point of Interconnection
Nearest Substation
BARRETT___1
Substation Distance
< 10 km
Coord Source
NYISO direct
Market Position
ISO/RTO Market
NYISO
LMP Node
23545
Pricing Hub
NYISO Zone K
Node Source
EIA-860 direct report
Last updated 2026-03-26
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