Summary of Electricity Activity in Connecticut

Summary of Connecticut Generation

Connecticut is ranked #33 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 Oct 2024.

Companies on File132
Plants on File214
Total Generation3.35G MMBtu
Total Sales 1.99G kWh
Total Revenue $502.95M

Map of Top Producing Cities in the Connecticut

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Overall National Rank

#33 /51 U.S. States

In Net Annual Generation

Overall Annual Net Geneneration

43.6 TWh

Total Annual Fuel Consumption

406.0 M MMBtu

Electric Companies in Connecticut

132

Connecticut
Power Plants

214

Natural Gas Rank

#20

Coal Rank

#45

Nuclear Rank

#20

Hydroelectric Rank

#41

Wind Rank

#41

Solar Rank

#30

Monthly Net Generation for Connecticut

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Electricity Sales Distribution

Electricity Sales, Price, and Revenue Breakdown

SalesPrice (Avg)Revenue
Residential830.40M kWh29.96 cents/kWh$248.78M
Commercial914.62M kWh23.05 cents/kWh$210.81M
Industrial231.60M kWh17.32 cents/kWh$40.10M
Transportation15.38M kWh21.23 cents/kWh$3.27M
Total1.99G kWh25.25 cents/kWh$502.95M

Production by Source

Largest 24 Power Plants in Connecticut

RankPlantUtilityLocationAnnual GenerationInitial Operation DateLast UpdateFuel Types
#15Algonquin Windsor LocksAlgonquin Windsor Locks LLCWindsor Locks, Connecticut128.7 GWhDec 1989Oct 2024 Natural Gas : 99.9%
#7Bridgeport Energy ProjectBridgeport Energy LLCBridgeport, Connecticut2.7 TWhMay 1998Oct 2024 Natural Gas
#21Bridgeport Fuel Cell, LLCBridgeport Fuel Cell, LLCBridgeport, Connecticut105.1 GWhNov 2013Dec 2023 Natural Gas
#5Bridgeport StationGeneration Bridge II Connecticut, LLCBridgeport, Connecticut3.3 TWhJul 1961Oct 2024 Natural Gas
#19Covanta Bristol EnergyCovanta Bristol IncBristol, Connecticut109.8 GWhNov 1987Oct 2024 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
#17Covanta Southeastern Connecticut CompanyCovanta Southeastern Connecticut CompanyPreston, Connecticut114.4 GWhNov 1991Oct 2024 Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Distillate Fuel Oil : 1.8%
#3CPV Towantic Energy CenterCPV Towantic, LLCOxford, Connecticut5.4 TWhApr 2018Oct 2024 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 2011Oct 2024 Natural Gas : 99.4% Distillate Fuel Oil : 0.6%
#2Lake Road Generating PlantLake Road Generating Co LPDayville, Connecticut5.7 TWhFeb 2002Oct 2024 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 2004Oct 2024 Natural Gas
#1MillstoneDominion Energy Nuclear Conn IncWaterford, Connecticut15.9 TWhNov 1975Oct 2024 Nuclear
#9Plainfield Renewable Energy LLCPlainfield Renewable Energy, LLCPlainfield, Connecticut233.8 GWhNov 2013Dec 2023 Wood/Wood Waste Solids : 99.6%
#20Pratt & WhitneyUnited TechnologiesEast Hartford, Connecticut109.0 GWhDec 1991Oct 2024 Natural Gas : 99.8%
#24Quinebaug SolarQuinebaug Solar, LLCCanterbury, Connecticut78.5 GWhNov 2021Oct 2024 Solar
#14Rand Whitney CHP PlantRand Whitney Containerboard L.P.Montville, Connecticut133.5 GWhMar 2005Oct 2024 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, Connecticut122.6 GWhFeb 2006Oct 2024 Natural Gas : 99.7%
#13Wallingford EnergyWallingford Energy LLCWallingford, Connecticut161.3 GWhJul 2001Dec 2023 Natural Gas
#8Wheelabrator BridgeportWheelabrator Environmental SystemsBridgeport, Connecticut452.6 GWhJun 1988Oct 2024 Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
#22Wheelabrator LisbonWheelabrator Environmental SystemsLisbon, Connecticut98.5 GWhSep 1995Oct 2024 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, CT50687.2 GWh551.1 GWh0.0 Wh103.4 GWh0.0 Wh
#2Greater Bridgeport Planning Region, CT106.8 TWh6.2 TWh0.0 Wh1.7 GWh0.0 Wh
#6Lower Connecticut River Valley Planning Region, CT153.1 TWh3.0 TWh0.0 Wh56.3 GWh0.0 Wh
#4Naugatuck Valley Planning Region, CT135.7 TWh5.4 TWh0.0 Wh8.1 GWh0.0 Wh
#3Northeastern Connecticut Planning Region, CT176.1 TWh5.8 TWh0.0 Wh116.2 GWh0.0 Wh
#9Northwest Hills Planning Region, CT1593.2 GWh0.0 Wh10.9 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, CT5016.7 TWh442.2 GWh0.0 Wh100.5 GWh15.9 TWh
#8Western Connecticut Planning Region, CT14303.9 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
#49Delaware4.5 TWh42
#51District of Columbia175.3 GWh23
#18Indiana92.4 TWh271
#23Kentucky66.0 TWh85
#45Maine13.6 TWh270
#38Maryland36.1 TWh247
#41Massachusetts20.2 TWh698
#11Michigan122.5 TWh374
#44New Hampshire17.8 TWh74
#26New Jersey61.9 TWh475
#10New York128.7 TWh1,165
#9North Carolina133.5 TWh1,119
#6Ohio145.0 TWh290
#3Pennsylvania240.0 TWh371
#46Rhode Island10.1 TWh114
#15South Carolina101.1 TWh297
#19Tennessee77.0 TWh114
#50Vermont2.5 TWh140
#14Virginia101.1 TWh314
#31West Virginia51.7 TWh66

* Net Generation data is based on the last 12 months since Oct 2024