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567 MW Kerosene operating in Suffolk, NY — New York Independent System Operator
567 MW
Nameplate Capacity
10
Generators
units
Petroleum Liquids
Technology
1974
Operating Since
Coordinates
40.8170, -73.0663
County
Suffolk, 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 Holtsville plant, located in Suffolk County, New York, has a total capacity of 567 MW across 10 generators. The plant's primary fuel is kerosene (KER), utilizing petroleum liquids technology. It began operating in 1974 and is owned by National Grid, with National Grid Generation LLC as the operator. The parent company is based in the United Kingdom. The plant operates within the New York Independent System Operator (NYISO) balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region.
Holtsville's latest annual generation was 21,293 MWh, resulting in a capacity factor of 0.4%. The installed cost per kilowatt was $181.72, according to FERC data. The plant is ranked 1 of 2 among similar facilities in New York state and 2 of 7 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
2.1K MWh
Latest Month
21.3K MWh
Annual Generation
0.4%
Capacity Factor
CO₂ Intensity
2750 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
8 lb/MWh
SO₂
Gas turbine · National Grid Generation LLC · Data from 2015–2024
$247/kW
Installed Cost
$247/kW
Annual CapEx
$183.1/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
HOLTSVILLE_IC_1
Substation Distance
< 10 km
Coord Source
NYISO direct
Market Position
ISO/RTO Market
NYISO
LMP Node
23690
Pricing Hub
NYISO Zone K
Node Source
EIA-860 direct report
Last updated 2026-03-26
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ask pi about HoltsvilleNew York Independent System Operator (NYIS)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.005 lb/MWh
CH₄
0.113 lb/MWh
N₂O
0.023 lb/MWh
Capacity Factor
0.3%
Annual Net Gen
16 GWh
CO₂eq
2759 lb/MWh
Subregion
NPCC Long Island