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 Apr 2025.
Companies on File | 136 |
---|---|
Plants on File | 222 |
Total Generation | 2.83G MMBtu |
Total Sales | 1.91G kWh |
Total Revenue | $521.27M |
Map of Top Producing Cities in the Connecticut
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Natural Gas Rank
#19
Coal Rank
#43
Nuclear Rank
#21
Hydroelectric Rank
#40
Wind Rank
#44
Solar Rank
#29
Monthly Net Generation for Connecticut
Electricity Sales Distribution
Electricity Sales, Price, and Revenue Breakdown
Sales | Price (Avg) | Revenue | |
---|---|---|---|
Residential | 854.38M kWh | 32.28 cents/kWh | $275.81M |
Commercial | 826.54M kWh | 24.46 cents/kWh | $202.14M |
Industrial | 214.49M kWh | 19.07 cents/kWh | $40.90M |
Transportation | 11.62M kWh | 20.83 cents/kWh | $2.42M |
Total | 1.91G kWh | 27.33 cents/kWh | $521.27M |
Production by Source
Largest 24 Power Plants in Connecticut
Rank | Plant | Utility | Location | Annual Generation | Initial Operation Date | Last Update | Fuel Types |
---|---|---|---|---|---|---|---|
#14 | Algonquin Windsor Locks | Ahlstrom Power Windsor Locks LLC | Windsor Locks, Connecticut | 118.4 GWh | Dec 1989 | Apr 2025 | Natural Gas : 99.9% |
#7 | Bridgeport Energy Project | Bridgeport Energy LLC | Bridgeport, Connecticut | 2.8 TWh | May 1998 | Apr 2025 | Natural Gas |
#21 | Bridgeport Fuel Cell, LLC | Bridgeport Fuel Cell, LLC | Bridgeport, Connecticut | 96.8 GWh | Nov 2013 | Dec 2024 | Natural Gas |
#5 | Bridgeport Station | Generation Bridge II Connecticut, LLC | Bridgeport, Connecticut | 3.6 TWh | Jul 1961 | Apr 2025 | Natural Gas : 98.6% Distillate Fuel Oil : 1.4% |
#18 | Covanta Bristol Energy | Covanta Bristol Inc | Bristol, Connecticut | 105.1 GWh | Nov 1987 | Apr 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
#16 | Covanta Southeastern Connecticut Company | Covanta Southeastern Connecticut Company | Preston, Connecticut | 113.2 GWh | Nov 1991 | Apr 2025 | Non-biogenic Municipal Solid Waste : 54.2% Biogenic Municipal Solid Waste : 44.4% Distillate Fuel Oil : 1.4% |
#3 | CPV Towantic Energy Center | CPV Towantic, LLC | Oxford, Connecticut | 5.3 TWh | Apr 2018 | Apr 2025 | Natural Gas |
#17 | Derby Fuel Cell | Derby Fuel Cell LLC | Derby, Connecticut | 105.9 GWh | Dec 2023 | Dec 2024 | Natural Gas |
#10 | Kimberly Clark-Unit 1,2,3 | Kimberly-Clark Corporation | New Milford, Connecticut | 219.0 GWh | Mar 2008 | Dec 2024 | Natural Gas |
#6 | Kleen Energy Systems Project | Kleen Energy Systems, LLC | Middletown, Connecticut | 3.3 TWh | Jun 2011 | Apr 2025 | Natural Gas : 99.3% Distillate Fuel Oil : 0.7% |
#2 | Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, Connecticut | 5.8 TWh | Feb 2002 | Apr 2025 | Natural Gas |
#11 | Middletown | Middletown Power LLC | Middletown, Connecticut | 169.8 GWh | Sep 1958 | Dec 2023 | Natural Gas : 79.3% Residual Fuel Oil : 20.7% |
#4 | Milford Power Project | Milford Power Co LLC | Milford, Connecticut | 3.7 TWh | Jan 2004 | Apr 2025 | Natural Gas |
#1 | Millstone | Dominion Energy Nuclear Conn Inc | Waterford, Connecticut | 16.5 TWh | Nov 1975 | Apr 2025 | Nuclear |
#9 | Plainfield Renewable Energy LLC | Plainfield Renewable Energy, LLC | Plainfield, Connecticut | 247.0 GWh | Nov 2013 | Oct 2024 | Wood/Wood Waste Solids : 99.5% |
#19 | Pratt & Whitney | United Technologies | East Hartford, Connecticut | 104.1 GWh | Dec 1991 | Apr 2025 | Natural Gas |
#24 | Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, Connecticut | 81.2 GWh | Nov 2021 | Apr 2025 | Solar |
#12 | Rand Whitney CHP Plant | Rand Whitney Containerboard L.P. | Montville, Connecticut | 133.2 GWh | Mar 2005 | Apr 2025 | Natural Gas |
#15 | Shepaug | FirstLight Power Resources Services LLC | Southbury, Connecticut | 116.6 GWh | Dec 1954 | Dec 2024 | Water |
#22 | Stevenson | FirstLight Power Resources Services LLC | Monroe, Connecticut | 95.8 GWh | Dec 1918 | Dec 2024 | Water |
#13 | UCONN Cogen Facility | University of Connecticut | Storrs, Connecticut | 124.8 GWh | Feb 2006 | Apr 2025 | Natural Gas : 98.9% Distillate Fuel Oil : 1.1% |
#23 | Wallingford Energy | Wallingford Energy LLC | Wallingford, Connecticut | 87.8 GWh | Jul 2001 | Dec 2024 | Natural Gas |
#8 | Wheelabrator Bridgeport | Wheelabrator Environmental Systems | Bridgeport, Connecticut | 464.7 GWh | Jun 1988 | Apr 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
#20 | Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, Connecticut | 102.1 GWh | Sep 1995 | Apr 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
Electricity Generation by Connecticut Counties
State Rank | County | # Power Plants | Net Generation Past 12 Months | Net Generation from Natural Gas | Net Generation from Wind | Net Generation from Solar | Net Generation from Nuclear |
---|---|---|---|---|---|---|---|
#7 | Capitol Planning Region, CT | 54 | 682.7 GWh | 531.9 GWh | 0.0 Wh | 129.7 GWh | 0.0 Wh |
#2 | Greater Bridgeport Planning Region, CT | 10 | 7.2 TWh | 6.6 TWh | 0.0 Wh | 2.4 GWh | 0.0 Wh |
#6 | Lower Connecticut River Valley Planning Region, CT | 16 | 3.5 TWh | 3.4 TWh | 0.0 Wh | 59.4 GWh | 0.0 Wh |
#4 | Naugatuck Valley Planning Region, CT | 15 | 5.7 TWh | 5.5 TWh | 0.0 Wh | 9.9 GWh | 0.0 Wh |
#3 | Northeastern Connecticut Planning Region, CT | 17 | 6.2 TWh | 5.8 TWh | 0.0 Wh | 119.5 GWh | 0.0 Wh |
#9 | Northwest Hills Planning Region, CT | 15 | 66.6 GWh | 0.0 Wh | 10.7 GWh | 16.6 GWh | 0.0 Wh |
#5 | South Central Connecticut Planning Region, CT | 23 | 3.9 TWh | 3.9 TWh | 0.0 Wh | 30.6 GWh | 0.0 Wh |
#1 | Southeastern Connecticut Planning Region, CT | 50 | 17.3 TWh | 442.3 GWh | 0.0 Wh | 115.5 GWh | 16.5 TWh |
#8 | Western Connecticut Planning Region, CT | 15 | 178.3 GWh | 205.8 GWh | 0.0 Wh | 0.0 Wh | 0.0 Wh |
Top 20 Electricity Producing Cities in Connecticut
City | Net Generation | # Power Plants |
---|---|---|
Baltic, Connecticut | 142.5 GWh | 2 |
Bridgeport, Connecticut | 7.0 TWh | 6 |
Bristol, Connecticut | 115.6 GWh | 3 |
Dayville, Connecticut | 5.9 TWh | 3 |
Derby, Connecticut | 105.9 GWh | 1 |
East Hartford, Connecticut | 156.4 GWh | 4 |
East Village, Connecticut | 95.8 GWh | 1 |
Groton, Connecticut | 190.3 GWh | 8 |
Hartford, Connecticut | 86.7 GWh | 5 |
Middletown, Connecticut | 3.5 TWh | 8 |
Milford city (balance), Connecticut | 3.7 TWh | 1 |
Naugatuck, Connecticut | 5.3 TWh | 1 |
New Milford, Connecticut | 251.3 GWh | 4 |
Newtown, Connecticut | 116.6 GWh | 1 |
Oxoboxo River, Connecticut | 250.9 GWh | 4 |
Plainfield Village, Connecticut | 249.9 GWh | 3 |
Storrs, Connecticut | 124.8 GWh | 1 |
Wallingford Center, Connecticut | 108.6 GWh | 3 |
Waterford, Connecticut | 16.5 TWh | 1 |
Windsor Locks, Connecticut | 149.8 GWh | 3 |
Electricity Generation for Neighboring States
National Rank | State | Net Generation | # Power Plants |
---|---|---|---|
#49 | Delaware | 5.1 TWh | 46 |
#51 | District of Columbia | 180.9 GWh | 24 |
#16 | Indiana | 101.9 TWh | 281 |
#23 | Kentucky | 70.0 TWh | 98 |
#45 | Maine | 14.7 TWh | 297 |
#39 | Maryland | 36.3 TWh | 254 |
#41 | Massachusetts | 21.9 TWh | 732 |
#11 | Michigan | 128.8 TWh | 387 |
#44 | New Hampshire | 17.2 TWh | 74 |
#29 | New Jersey | 58.9 TWh | 478 |
#10 | New York | 129.4 TWh | 1,261 |
#9 | North Carolina | 136.0 TWh | 1,129 |
#7 | Ohio | 143.3 TWh | 309 |
#3 | Pennsylvania | 246.2 TWh | 384 |
#46 | Rhode Island | 9.9 TWh | 114 |
#15 | South Carolina | 103.7 TWh | 304 |
#21 | Tennessee | 71.9 TWh | 137 |
#50 | Vermont | 2.3 TWh | 141 |
#13 | Virginia | 104.5 TWh | 341 |
#31 | West Virginia | 51.8 TWh | 66 |
* Net Generation data is based on the last 12 months since Apr 2025