Sources of Connecticut utility-scale electricity generation:
full-year 2022[1]

  Natural Gas (56.7%)
  Nuclear (38.1%)
  Biomass & RDF (1.6%)
  Solar (1%)
  Hydroelectric (1%)
  Petroleum (0.4%)
  Other (1.1%)

This is a list of electricity-generating power stations in the U.S. state of Connecticut, sorted by type and name. In 2020, Connecticut had a total summer capacity of 10,276 MW through all of its power plants, and a net generation of 41,191 GWh.[2] In 2022, the electrical energy generation mix was 56.7% natural gas, 38.1% nuclear, 1.6% biomass & refuse-derived fuels, 1% solar, 1% hydroelectric, 0.4% petroleum, and 1.1% other. Distributed small-scale solar, including customer-owned photovoltaic panels, delivered an additional net 959 GWh to the state's electricity grid. This compares as more than twice the amount generated by Connecticut's utility-scale solar facilities.[1]

Nuclear power stations

Data reported by U.S. Energy Information Administration[3]
Plant NameLocationCoordinatesCapacity
(MW)		TechnologyYear
Completed		Refs
Millstone Nuclear Power PlantNew London County2,162.9Nuclear

Retired plants:

Fossil-fuel power stations

Coal

The last coal-fired plant was retired in 2021.[4]

Petroleum

Data reported by U.S. Energy Information Administration
Plant NameLocationCoordinatesCapacity
(MW)		TechnologyYear
Completed		Refs
Backus Microgrid ProjectNew London County10.4Petroleum Liquids
BranfordNew Haven County21.8Petroleum Liquids
Bridgeport StationFairfield County17Petroleum Liquids[A]
Bridge Street 1 & 2New London County5.2Petroleum Liquids
Devon StationNew Haven County222.6Petroleum Liquids
Franklin DriveLitchfield County21.8Petroleum Liquids
CCSU Co-Gen-STBY GenHartford County1Petroleum Liquids[A]
Cos Cob[B]Fairfield County115Petroleum Liquids
Fort Hill 1, 2, 3 & 4New London County10.4Petroleum Liquids
Gary Court 1 & 2New London County6Petroleum Liquids
Jewett City 1New London County2.6Petroleum Liquids
LNG 1 & 2New London County5.2Petroleum Liquids
Lebanon Pines 1 & 2New London County5.2Petroleum Liquids
MiddletownMiddlesex County417.2Petroleum Liquids[A]
Montville StationNew London County495.3Petroleum Liquids
New Haven HarborNew Haven County128.7Petroleum Liquids[A]
Norden 1-3Fairfield County6Petroleum Liquids
North Main StreetNew London County19Petroleum Liquids
Norwich WWTPNew London County2Petroleum Liquids
South MeadowHartford County167.2Petroleum Liquids
Torrington TerminalLitchfield County21.8Petroleum Liquids
TunnelNew London County16.5Petroleum Liquids[A]
Waterside Power, LLCFairfield County69.6Petroleum Liquids
Water Treatment 1 & 2New London County5.2Petroleum Liquids

A Multi-fuel plant, listed is "Total Net Summer Capacity" by source.
B Not to be confused with the historic Cos Cob Power Station

Natural gas

Data reported by U.S. Energy Information Administration[3]
Plant NameLocationCoordinatesCapacity
(MW)		TechnologyYear
Completed		Refs
A L PierceNew Haven County84Natural Gas Fired Combustion Turbine
Algonquin Windsor LocksHartford County71Natural Gas Fired Combined Cycle
Bradley Energy CenterHartford County5.8Natural Gas Internal Combustion Engine
Bridgeport Energy ProjectFairfield County520Natural Gas Fired Combined Cycle
Bridgeport Fuel Cell, LLCFairfield County16.6Other Natural Gas
Bridgeport StationFairfield County576.3Natural Gas Fired Combined Cycle[A]
CCSU Co-Gen-STBY GenHartford County2.6Natural Gas Internal Combustion Engine[A]
CCSU Fuel Cell ProjectHartford County1.4Other Natural Gas
CJTS Energy CenterMiddlesex County0.4Other Natural Gas
CPV Towantic Energy CenterNew Haven County841.5Natural Gas Fired Combined Cycle
Capitol District Energy CenterHartford County70.5Natural Gas Fired Combined Cycle
Cellu TissueHartford County3Natural Gas Internal Combustion Engine
Danbury Hospital Cogen PlantFairfield County4.3Natural Gas Fired Combustion Turbine
Digital FairfieldFairfield County2Other Natural Gas
Fairfield University CHP PlantFairfield County4.5Natural Gas Fired Combustion Turbine
Frito Lay IncorporatedWindham County4.6Natural Gas Fired Combustion Turbine
Foxwoods CoGenNew London County162Natural Gas Fired Combined Cycle
HSCo CHPHartford County4Natural Gas Fired Combustion Turbine
Hartford Hospital CogenerationHartford County11.8Other Natural Gas
Natural Gas Fired Combined Cycle
IBM SouthburyNew Haven County1.1Other Natural Gas
IKEA New Haven Rooftop PV & Fuel CellNew Haven County0.3Other Natural Gas[A]
Lake Road Generating PlantWindham County840Natural Gas Fired Combined Cycle
Kleen Energy Systems, LLCMiddlesex County693Natural Gas Fired Combined Cycle
Kimberly Clark-Unit 1,2,3Litchfield County36.3Natural Gas Fired Combined Cycle
Natural Gas Fired Combustion Turbine
MiddletownMiddlesex County417.2Natural Gas Steam Turbine[A]
Milford Power ProjectNew Haven County578Natural Gas Fired Combined Cycle
New Haven HarborNew Haven County447.9Natural Gas Steam Turbine[A]
Pepperidge Farm BloomfieldHartford County2.6Other Natural Gas
Pfizer Groton Fuel CellNew London County5.6Other Natural Gas
Pfizer Groton PlantNew London County37.5Natural Gas Fired Combustion Turbine
Natural Gas Steam Turbine
Pratt & WhitneyHartford County25.8Natural Gas Fired Combustion Turbine
Rand Whitney CHP PlantNew London County14.6Natural Gas Fired Combustion Turbine
South Windsor Fuel CellHartford County5Other Natural Gas
Sikorsky Aircraft CHPFairfield County9.3Natural Gas Fired Combustion Turbine[A]
TRS Fuel CellFairfield County3.7Other Natural Gas
Trinity College Fuel CellHartford County1.4Other Natural Gas
UB Fuel CellFairfield County1.4Other Natural Gas
UCONN Cogen FacilityTolland County25.7Natural Gas Fired Combined Cycle
UI RCP Bridgeport SeasideFairfield County2.5Other Natural Gas[A]
UI RCP New Haven Fuel CellNew Haven County2.8Other Natural Gas
UI RCP Woodbridge FCNew Haven County2.8Other Natural Gas
Waterbury GenerationNew Haven County96Natural Gas Steam Turbine
Wesleyan University Cogen 1Middlesex County2.4Natural Gas Internal Combustion Engine

A Multi-fuel plant, listed is "Total Net Summer Capacity" by source.

Renewable power stations

Biomass and refuse-derived fuels

Data reported by U.S. Energy Information Administration[3]
Plant NameLocationCoordinatesCapacity
(MW)		TechnologyYear
Completed		NotesRefs
Covanta Bristol EnergyHartford County16.9Municipal Solid Waste
Covanta Southeastern Connecticut CompanyNew London County18.3Municipal Solid Waste
CT Resource Rec Authority FacilityHartford County90Municipal Solid WasteClosed July 2022[5]
Exeter Energy LPWindham County31.3Tire-derived fuel (TDF)[6]
Plainfield Renewable Energy LLCWindham County43Wood/Wood Waste Biomass
New Milford Gas RecoveryLitchfield County2.4Landfill gas
Win Waste Innovations BridgeportFairfield County67Municipal Solid Waste
Win Waste Innovations LisbonNew London County14.6Municipal Solid Waste

Geothermal

There were no utility-scale Geothermal facilities in the state of Connecticut in 2019.

Hydroelectric

Data reported by U.S. Energy Information Administration [3]
Plant NameLocationCoordinatesCapacity (MW)Year CompletedRefs
Quinebaug Lower ProjectWindham County2.5
Bulls BridgeLitchfield County7.2
Falls VillageLitchfield County9
Goodwin HydroelectricHartford County3.2
Kinneytown New OldNew Haven County2.3
McCallum Enterprises I LPFairfield County8.6
Rainbow (CT)Hartford County8
Scotland DamWindham County2
ShepaugNew Haven County37.2
StevensonFairfield County30.5
TaftvilleNew London County1.6
Tenth StreetNew London County1.4
TunnelNew Haven County1.6[A]

A Multi-fuel plant, listed is "Total Net Summer Capacity" by source.

Solar

Data reported by U.S. Energy Information Administration [3]
PlantLocationAreaCapacity (MW)Refs
Adams SolarNew London County1
Advance Stores Company, IncHartford County1
ALDI DC 2Hartford County1.2
Amazon_BLD3New Haven County1
Antares-GRE 314 East Lyme LLCNew London County4
Barrett Farm Solar - Phase IWindham County1.7
Becton CanaanLitchfield County2.5
Brass Mill CenterNew Haven County3.4
CMEEC - BozrahNew London County2.5
CMEEC - Navy NE TridentNew London County1
CMEEC - Norwich Stott St Solar HybridNew London County4.3
CMEEC - Polaris Park Solar HybridNew London County4.3
CP Middletown Solar I LLCMiddlesex County1
Canis Major Solar FarmHartford County2
Canis Minor Solar FarmLitchfield County1
Conn Mun Electric Energy CoopNew London County2.5
Corbin Russwin Phase 3 BerlinHartford County1
DWW Solar IIHartford County36.9
Franklin SolarNew London County1
Fusion Solar Center LLCNew London County20
Hamilton SolarNew London County1
Hartford Landfill Solar EGFHartford County1
IKEA New Haven Rooftop PV & Fuel Cell[A]New Haven County0.8
Jackson Solar (CT)New London County1
Jefferson SolarNew London County1
Manchester Community College EastHartford County1
Manchester Community College NorthHartford County1
Plainfield Solar 2Windham County1
Sherman SolarNew London County1
Sikorsky Aircraft CHP[A]Fairfield County0.1
Somers Solar Center, LLCTolland County5
Stafford MS Ground Mount Community SolarTolland County2
Ticket Network South WindsorHartford County1
Town of BranfordNew Haven County1.1
Town of Rocky Hill PV CSGHartford County3
UI RCP Bridgeport Seaside[A]Fairfield County2.2
Wilson SolarNew London County1
Woods Hill SolarWindham County20

A Multi-fuel plant, listed is "Total Net Summer Capacity" by source.

Wind

Data reported by U.S. Energy Information Administration [3]
PlantLocationAreaCapacity (MW)Refs
Wind Colebrook SouthLitchfield County5

Storage power stations

Battery storage

There were no utility-scale Battery Storage facilities in the state of Connecticut in 2019.

Pumped storage

Data reported by U.S. Energy Information Administration [3]
PlantLocationAreaCapacity (MW)Refs
Rocky RiverLitchfield County31

See also

References

  1. 1 2 "Electricity Data Browser, Net generation for all sectors, Connecticut, Fuel Type-Check all, Annual, 2001–22". www.eia.gov. Retrieved 2023-09-10.
  2. ↑ "Connecticut Electricity Profile". U.S. Energy Information Administration. Retrieved 2022-07-18.
  3. 1 2 3 4 5 6 7 "Connecticut Profile: State Profile and Energy Estimates". U.S. Energy Information Administration. Retrieved 2020-03-05.
  4. ↑ "PSEG exits coal-fired power with Bridgeport Harbor Station retirement". Power Engineering. 2021-06-01. Retrieved 2023-03-23.
  5. ↑ "Hartford, Connecticut Garbage Incinerator to Close in 2022". ilsr.org. Retrieved 2022-08-20.
  6. ↑ "Exeter Energy Lp in Sterling, Connecticut". CountyOffice.org. Retrieved 2021-02-25.
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