Southold — Plant Summary
- EIA Plant ID
- 2520
- Capacity
- 14 MW
- Primary Fuel
- Oil
- Technology
- Petroleum Liquids
- Status
- Operating
- Location
- Suffolk, NY
- Operating Since
- 1964
- Generators
- 1
- Operator
- National Grid Generation LLC
- Parent Company
- National Grid
- Annual Generation
- 685.99 MWh
- Capacity Factor
- 0.6%
- Balancing Authority
- New York Independent System Operator
- ISO/RTO
- NYISO
- NERC Region
- NPCC
Southold
OperatingDistillate Oil
Ranked #11 of 65 Distillate Oil plants in NY#210 of 827 nationally
14 MW Distillate Oil operating in Suffolk, NY — New York Independent System Operator
EIAWD
14 MW
Nameplate Capacity
1
Generators
unit
Petroleum Liquids
Technology
1964
Operating Since
Location
Coordinates
41.1059, -72.3761
County
Suffolk, NY
Nearby Plants
- Hawkeye Energy Greenport LLCKerosene54 MW · 0.0 km
- GreenportDistillate Oil10.1 MW · 0.1 km
- Sterlington Greenworks LLCSolar1.3 MW · 6.9 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 Southold plant is a 14 MW petroleum liquids-fired power plant located in Suffolk County, New York. The plant began operating in 1964 and has one generator. It is owned by National Grid, a company based in the United Kingdom, and operated by National Grid Generation LLC. The plant operates within the New York Independent System Operator (NYISO) balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region.
In the latest year of reported generation data, Southold produced 686 MWh of electricity, achieving a capacity factor of 0.6%. The plant's installed cost was $382.04 per kW, according to FERC data. Southold is ranked as the 12th largest of 66 power plants in New York and 253rd out of 886 plants nationally. Recent news coverage of the plant includes 3 articles each on industry and regulatory topics, 2 on grid issues, and 1 each on hazards and deals.
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
192 MWh
Latest Month
686 MWh
Annual Generation
0.6%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1HIGH
$543/kW
Installed Cost
$1015.4/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
SOUTHOLD___IC
Substation Distance
< 10 km
Coord Source
NYISO direct
Market Position
ISO/RTO Market
NYISO
LMP Node
23719
Pricing Hub
NYISO Zone K
Node Source
EIA-860 direct report
News & Articles (10)Beta
Grid·capacity addition
Cuba Begins Testing First Battery Energy Storage System to Boost Grid Stability
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
Hazards·extreme cold
Blizzard of 2026: Schools call for another snow day as nor'easter dumps nearly two feet of snow on North Fork
North Fork communities are being walloped by a blizzard, with snow blanketing everything in sight, winds whipping and power going out.
The Suffolk Times·3 weeks ago
Industry·corporate
Southold Town hit with 'potential cyber incident'
Southold Town employees were without email and access to some computer servers Monday after what officials said in an alert to residents was...
Newsday·4 months ago
General
The Giving Trees: To put on CAST’s annual Festival of Trees, it takes a village — and then some
Remember the scene in “A Charlie Brown Christmas” when the main character's scant but thoroughly loved little pine tree sags under the...
Northforker·4 months ago
Last updated 2026-03-25
View all 10 articles