Kleen Energy Systems Project — Plant Summary
- EIA Plant ID
- 56798
- Capacity
- 693 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Middlesex, CT
- Operating Since
- 2011
- Generators
- 3
- Operator
- Kleen Energy Systems, LLC
- Parent Company
- —
- Annual Generation
- 3,216,190 MWh
- Capacity Factor
- 52.9%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Kleen Energy Systems Project
OperatingNatural Gas
Ranked #3 of 48 Natural Gas plants in CT#312 of 2009 nationally
693 MW Natural Gas operating in Middlesex, CT — ISO New England Inc.
EIAWD
693 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2011
Operating Since
Location
Coordinates
41.5549, -72.5983
County
Middlesex, CT
Nearby Plants
- MiddletownNatural Gas786.4 MW · 1.6 km
- Elevate MiddletownBESS275 MW · 1.7 km
- GenConn Middletown LLCKerosene242 MW · 2.0 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Kleen Energy Systems, LLC | — | — |
| Owner(s) | Kleen Energy Systems, LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Kleen Energy Systems Project is a 693 MW natural gas-fired combined cycle power plant located in Middlesex County, Connecticut. The plant, which began operating in 2011, is owned and operated by Kleen Energy Systems, LLC. It consists of three generators and operates within the ISO New England Inc. balancing authority. The plant is located within the Northeast Power Coordinating Council (NPCC) NERC region.
In the most recent year with available data, the Kleen Energy Systems Project generated 3,216,190 MWh of electricity, achieving a capacity factor of 52.9%. The plant ranks as the 4th largest out of 8 power plants in Connecticut, and 315th out of 945 plants nationally. Financial data indicates a power purchase agreement (PPA) price of $13.4 per MWh, as reported to FERC.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
345 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue1 projectBeta
Kleen Energy Project
OperationalGas619.799988 MWISO-NE
Generation
273.5K MWh
Latest Month
3.2M MWh
Annual Generation
52.9%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: FERC Electric Quarterly ReportsHIGH
$13.4/MWh
PPA Price
Kleen Energy Systems, LLC
Contract Seller
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Kleen Substation · 345 kV
Substation Distance
< 10 km
Operator
Eversource
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
14614
Pricing Hub
.Z.CONNECTICUT
Node Source
EIA-860 direct report
News & Articles (10)Beta
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