Query
Port Jefferson
Type
Entity Briefing
Entity
Port Jefferson
Generated
2026-10-12T23:25:15.574Z

Briefing on Port Jefferson

Entity Briefing
Generated Oct 12, 2026·Dataset freshness not reported
498 MW
Capacity
Operating
Current status
1958
Operating since
5
Generators
7.7%
Capacity factor
338 GWh
Annual generation
Briefing/plantOperating

Port Jefferson is a 498 MW Natural Gas Fired Combustion Turbine asset in NYISO (New York), currently Operating.

Port Jefferson is reported in New York since 1958 under National Grid. Available operating and financial measures include 7.7% capacity factor and 338 GWh annual generation; $965/kW reported CapEx.

Location
Suffolk, New York
Technology
Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine, Petroleum Liquids
Owner / parent
National Grid
Operator
National Grid Generation LLC
Grid
NYISO (New York)
Plant ID
2517

What stands out

1

Port Jefferson is a 498 MW Natural Gas Fired Combustion Turbine asset in New York with status Operating.

2

Latest annual operating measures report 7.7% capacity factor and 338 GWh annual generation.

3

Available financial measures include $965/kW CapEx.

4

Latest linked story: “National Grid considers repowering power plants in Northport, Port Jeff, Island Park” (Newsday, 2026-03-13).

Market and operating context

ISO / market
NYISO (New York)
Balancing authority
New York Independent System Operator
NERC region
NPCC
State rank
#19 of 103
National rank
#503 of 2,025

Why it matters

For this asset in NYISO (New York), operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.