Holtsville — Plant Summary
- EIA Plant ID
- 8007
- Capacity
- 567 MW
- Primary Fuel
- KER
- Technology
- Petroleum Liquids
- Status
- Operating
- Location
- Suffolk, NY
- Operating Since
- 1974
- Generators
- 10
- Operator
- National Grid Generation LLC
- Parent Company
- National Grid
- Annual Generation
- 21,293 MWh
- Capacity Factor
- 0.4%
- Balancing Authority
- New York Independent System Operator
- ISO/RTO
- NYISO
- NERC Region
- NPCC
Holtsville
OperatingKerosene
Ranked #1 of 5 Kerosene plants in NY#1 of 15 nationally
567 MW Kerosene operating in Suffolk, NY — New York Independent System Operator
EIAWD
567 MW
Nameplate Capacity
10
Generators
units
Petroleum Liquids
Technology
1974
Operating Since
Location
Coordinates
40.8170, -73.0663
County
Suffolk, NY
Nearby Plants
- Richard M FlynnNatural Gas170 MW · 0.2 km
- Holtsville Solar ProjectSolar1.2 MW · 3.2 km
- Lincoln Ave Solar ProjectSolar2 MW · 4.3 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | National Grid Generation LLC | National Grid Generation | — |
| Owner(s) | National Grid Generation LLC | National Grid | — |
| Status | Operating | — | — |
Ownership Chain
About
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
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
New York Independent System Operator
Grid Voltage
69 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
2.1K MWh
Latest Month
21.3K MWh
Annual Generation
0.4%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1HIGH
$247/kW
Installed Cost
$183.1/MWh
Operating Cost
National Grid Generation LLC
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint 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
News & Articles (10)Beta
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As part of the country’s strategic program to strengthen the stability of the national grid, Cuba has begun load testing of the first unit of a battery energy storage system (BESS) at the El Cotorro substation in Havana. This is the first of four systems with a total capacity of 200 MW. According...
POWER Magazine·1 weeks ago
Regulatory·permitting
Savion Energy files lawsuit over Holtsville variance denial
Savion Energy sues Suffolk County after denial of variance for hazardous material storage at Holtsville site, challenging the legal basis of...
Savion Energy (developer)Suffolk County (regulator)
Newsday·2 months ago
Hazards·wildfire
Long Island | Crews battle brush fire near New York Power Authority facility in Holtsville
Details surrounding the how the fire started were not immediately clear.
New York Power Authority (operator)
News12 | Long Island·5 months ago
Regulatory·state puc
Brookhaven to review battery-storage applications in 2026
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Brookhaven Town (regulator)
Newsday·7 months ago
Last updated 2026-03-25
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