Cos Cob — Plant Summary
- EIA Plant ID
- 542
- Capacity
- 115 MW
- Primary Fuel
- KER
- Technology
- Petroleum Liquids
- Status
- Operating
- Location
- Fairfield, CT
- Operating Since
- 1969
- Generators
- 5
- Operator
- Connecticut Jet Power LLC
- Parent Company
- —
- Annual Generation
- 676.02 MWh
- Capacity Factor
- 0.1%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Cos Cob
OperatingKerosene
Ranked #4 of 7 Kerosene plants in CT#5 of 15 nationally
115 MW Kerosene operating in Fairfield, CT — ISO New England Inc.
EIAWD
115 MW
Nameplate Capacity
5
Generators
units
Petroleum Liquids
Technology
1969
Operating Since
Location
Coordinates
41.0291, -73.5987
County
Fairfield, CT
Nearby Plants
- Waterside Power, LLCDistillate Oil69.6 MW · 3.7 km
- Stamford HealthDistillate Oil10.4 MW · 4.9 km
- Stamford Health Tully Health CenterDistillate Oil1.5 MW · 6.7 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Connecticut Jet Power LLC | — | — |
| Owner(s) | Connecticut Jet Power LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Cos Cob power plant is a 115 MW petroleum liquids-fueled facility located in Fairfield County, Connecticut. It began operating in 1969 and has 5 generators. The plant is owned and operated by Connecticut Jet Power LLC. It is interconnected to the ISO New England Inc. balancing authority and is within the North American Electric Reliability Corporation (NERC) NPCC region.
In the most recent year with available data, the plant generated 676 MWh of electricity, resulting in a capacity factor of 0.1%. Cos Cob is ranked as the 5th largest petroleum liquids plant in Connecticut (out of 5) and 6th nationally (out of 7).
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
102 MWh
Latest Month
676 MWh
Annual Generation
0.1%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Cos Cob Substation · 115 kV
Substation Distance
0.027 km
Operator
Eversource
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.COSCOB 26.4
Pricing Hub
.Z.CONNECTICUT
Node Source
Curated node match
News & Articles (10)Beta
Industry·corporate
CT getaways: A waterfront weekend in Greenwich's Cos Cob section
Strolling through Cos Cob Park, I spied them. Two 12-foot-tall glass towers emblazoned with an American flag motif, sit atop a bluff...
CT Insider·6 months ago
Industry·corporate
SCAPE and Bjarke Ingels to turn former Connecticut power plant site into public park
A Connecticut couple plans to transform an abandoned industrial island into a fully accessible and dynamic natural park and community...
6sqft·1 years ago
Industry·technology
Connecticut power plant plans wood biomass integration
NRG Energy Inc. announced its intention to use woody biomass as a fuel source at its Montville Generating Station in Uncasville, Conn.
NRG Energy Inc. (operator)Montville Generating Station (operator)
Biomass Magazine·2 years ago
Industry·corporate
OHP Blog – Cos Cob in the 1920s’ and 1930’s
By Mary A. Jacobson Cos Cob is a close-knit, self-sufficient community within Greenwich with its own identity. With Long Island Sound to its...
The Greenwich Sentinel·2 years ago
Last updated 2026-03-14
View all 10 articles