Summary of Electricity Activity in Connecticut

Summary of Connecticut Generation

Connecticut is ranked #32 out of 51 U.S. states and territories in terms of total annual net electricity generation.

GridInfo.com electricity generation data is aggregated from Jan 2001 to Jan 2025.

Companies on File132
Plants on File214
Total Generation3.91G MMBtu
Total Sales 2.59G kWh
Total Revenue $702.09M

Map of Top Producing Cities in the Connecticut

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Overall National Rank

#32 /51 U.S. States

In Net Annual Generation

Overall Annual Net Geneneration

45.4 TWh

Total Annual Fuel Consumption

426.5 M MMBtu

Electric Companies in Connecticut

132

Connecticut
Power Plants

214

Natural Gas Rank

#20

Coal Rank

#43

Nuclear Rank

#17

Hydroelectric Rank

#41

Wind Rank

#40

Solar Rank

#29

Monthly Net Generation for Connecticut

5M5M4M4M3M3M2M2M1M1M002001200120022002200320032004200420052005200620062007200720082008200920092010201020112011201220122013201320142014201520152016201620172017201820182019201920202020202120212022202220232023
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Electricity Sales Distribution

Sales Residential
Sales Commercial
Sales Industrial
Sales Transportation
52.4%39.0%7.9%

Electricity Sales, Price, and Revenue Breakdown

SalesPrice (Avg)Revenue
Residential1.38G kWh30.06 cents/kWh$415.79M
Commercial993.54M kWh24.50 cents/kWh$243.37M
Industrial200.39M kWh20.16 cents/kWh$40.41M
Transportation11.69M kWh21.48 cents/kWh$2.51M
Total2.59G kWh27.12 cents/kWh$702.09M

Production by Source

TotalTotalNatural GasNatural GasCoalCoalNuclearNuclearHydroelectricHydroelectricHydro Electric Pumpe...Hydro Electric Pumped StorageGeothermalGeothermalUtility Scale ThermalUtility Scale ThermalPetroleum LiquidsPetroleum LiquidsPetroleum CokePetroleum CokeAll RenewablesAll RenewablesWindWindAll SolarAll SolarAll Utility SolarAll Utility SolarUtility Scale Photovolt...Utility Scale PhotovoltaicSmall Scale SolarSmall Scale SolarWoodWoodOther GasesOther GasesOther BiomassOther BiomassOtherOther500050004000400030003000200020001000100000
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Largest 24 Power Plants in Connecticut

RankPlantUtilityLocationAnnual GenerationInitial Operation DateLast UpdateFuel Types
#15Algonquin Windsor LocksAlgonquin Windsor Locks LLCWindsor Locks, Connecticut130.3 GWhDec 1989Dec 2024 Natural Gas : 99.9%
#7Bridgeport Energy ProjectBridgeport Energy LLCBridgeport, Connecticut2.7 TWhMay 1998Jan 2025 Natural Gas
#20Bridgeport Fuel Cell, LLCBridgeport Fuel Cell, LLCBridgeport, Connecticut105.1 GWhNov 2013Dec 2023 Natural Gas
#5Bridgeport StationGeneration Bridge II Connecticut, LLCBridgeport, Connecticut3.5 TWhJul 1961Jan 2025 Natural Gas : 99.0% Distillate Fuel Oil : 1.0%
#19Covanta Bristol EnergyCovanta Bristol IncBristol, Connecticut108.9 GWhNov 1987Jan 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
#17Covanta Southeastern Connecticut CompanyCovanta Southeastern Connecticut CompanyPreston, Connecticut113.7 GWhNov 1991Jan 2025 Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Distillate Fuel Oil : 1.6%
#3CPV Towantic Energy CenterCPV Towantic, LLCOxford, Connecticut5.5 TWhApr 2018Jan 2025 Natural Gas
#23Generate Colchester Fuel Cells, LLCGenerate Colchester Fuel Cells, LLCColchester, Connecticut82.3 GWhSep 2021Dec 2023 Natural Gas
#10Kimberly Clark-Unit 1,2,3Kimberly-Clark CorporationNew Milford, Connecticut217.4 GWhMar 2008Dec 2023 Natural Gas
#6Kleen Energy Systems ProjectKleen Energy Systems, LLCMiddletown, Connecticut2.9 TWhJun 2011Jan 2025 Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
#2Lake Road Generating PlantLake Road Generating Co LPDayville, Connecticut5.8 TWhFeb 2002Jan 2025 Natural Gas
#11MiddletownMiddletown Power LLCMiddletown, Connecticut169.8 GWhSep 1958Dec 2023 Natural Gas : 79.3% Residual Fuel Oil : 20.7%
#4Milford Power ProjectMilford Power Co LLCMilford, Connecticut3.8 TWhJan 2004Jan 2025 Natural Gas
#1MillstoneDominion Energy Nuclear Conn IncWaterford, Connecticut17.2 TWhNov 1975Jan 2025 Nuclear
#9Plainfield Renewable Energy LLCPlainfield Renewable Energy, LLCPlainfield, Connecticut233.8 GWhNov 2013Dec 2023 Wood/Wood Waste Solids : 99.6%
#21Pratt & WhitneyUnited TechnologiesEast Hartford, Connecticut103.3 GWhDec 1991Jan 2025 Natural Gas
#24Quinebaug SolarQuinebaug Solar, LLCCanterbury, Connecticut81.3 GWhNov 2021Jan 2025 Solar
#14Rand Whitney CHP PlantRand Whitney Containerboard L.P.Montville, Connecticut133.3 GWhMar 2005Jan 2025 Natural Gas
#12ShepaugFirstLight Power Resources Services LLCSouthbury, Connecticut163.1 GWhDec 1954Dec 2023 Water
#18StevensonFirstLight Power Resources Services LLCMonroe, Connecticut111.2 GWhDec 1918Dec 2023 Water
#16UCONN Cogen FacilityUniversity of ConnecticutStorrs, Connecticut123.2 GWhFeb 2006Jan 2025 Natural Gas : 98.9% Distillate Fuel Oil : 1.1%
#13Wallingford EnergyWallingford Energy LLCWallingford, Connecticut161.3 GWhJul 2001Dec 2023 Natural Gas
#8Wheelabrator BridgeportWheelabrator Environmental SystemsBridgeport, Connecticut449.2 GWhJun 1988Jan 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
#22Wheelabrator LisbonWheelabrator Environmental SystemsLisbon, Connecticut99.2 GWhSep 1995Jan 2025 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%

Electricity Generation by Connecticut Counties

State RankCounty# Power PlantsNet Generation
Past 12 Months
Net Generation
from Natural Gas
Net Generation
from Wind
Net Generation
from Solar
Net Generation
from Nuclear
#7Capitol Planning Region, CT50678.2 GWh546.3 GWh0.0 Wh103.4 GWh0.0 Wh
#2Greater Bridgeport Planning Region, CT107.0 TWh6.4 TWh0.0 Wh2.3 GWh0.0 Wh
#6Lower Connecticut River Valley Planning Region, CT153.2 TWh3.0 TWh0.0 Wh58.1 GWh0.0 Wh
#4Naugatuck Valley Planning Region, CT135.9 TWh5.6 TWh0.0 Wh8.1 GWh0.0 Wh
#3Northeastern Connecticut Planning Region, CT176.2 TWh5.8 TWh0.0 Wh120.4 GWh0.0 Wh
#9Northwest Hills Planning Region, CT1592.8 GWh0.0 Wh10.6 GWh17.1 GWh0.0 Wh
#5South Central Connecticut Planning Region, CT234.1 TWh4.0 TWh0.0 Wh25.0 GWh0.0 Wh
#1Southeastern Connecticut Planning Region, CT5018.0 TWh449.5 GWh0.0 Wh102.0 GWh17.2 TWh
#8Western Connecticut Planning Region, CT14303.1 GWh243.7 GWh0.0 Wh0.0 Wh0.0 Wh

Top 20 Electricity Producing Cities in Connecticut

Electricity Generation for Neighboring States

National RankStateNet Generation# Power Plants
#49Delaware4.9 TWh42
#51District of Columbia184.9 GWh23
#17Indiana95.2 TWh271
#22Kentucky67.8 TWh85
#45Maine13.4 TWh271
#38Maryland36.2 TWh247
#41Massachusetts20.6 TWh698
#11Michigan125.2 TWh375
#44New Hampshire17.4 TWh74
#27New Jersey59.5 TWh475
#10New York129.2 TWh1,166
#9North Carolina136.2 TWh1,119
#6Ohio144.7 TWh291
#3Pennsylvania245.1 TWh371
#46Rhode Island10.1 TWh114
#15South Carolina100.4 TWh297
#19Tennessee75.1 TWh114
#50Vermont2.5 TWh140
#14Virginia101.8 TWh314
#31West Virginia51.1 TWh66

* Net Generation data is based on the last 12 months since Jan 2025