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 Feb 2025.
| Companies on File | 132 |
|---|---|
| Plants on File | 214 |
| Total Generation | 3.57G MMBtu |
| Total Sales | 2.24G kWh |
| Total Revenue | $654.09M |
Map of Top Producing Cities in the Connecticut
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Natural Gas Rank
#19
Coal Rank
#50
Nuclear Rank
#16
Hydroelectric Rank
#40
Wind Rank
#41
Solar Rank
#30
Monthly Net Generation for Connecticut
Electricity Sales Distribution
Electricity Sales, Price, and Revenue Breakdown
| Sales | Price (Avg) | Revenue | |
|---|---|---|---|
| Residential | 1.14G kWh | 33.25 cents/kWh | $378.57M |
| Commercial | 898.54M kWh | 25.76 cents/kWh | $231.46M |
| Industrial | 189.65M kWh | 21.43 cents/kWh | $40.65M |
| Transportation | 16.96M kWh | 20.12 cents/kWh | $3.41M |
| Total | 2.24G kWh | 29.15 cents/kWh | $654.09M |
Production by Source
Largest 24 Power Plants in Connecticut
| Rank | Plant | Utility | Location | Annual Generation | Initial Operation Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| #16 | Algonquin Windsor Locks | Algonquin Windsor Locks LLC | Windsor Locks, Connecticut | 120.3 GWh | Dec 1989 | Feb 2025 | Natural Gas : 99.9% |
| #7 | Bridgeport Energy Project | Bridgeport Energy LLC | Bridgeport, Connecticut | 2.7 TWh | May 1998 | Feb 2025 | Natural Gas |
| #20 | Bridgeport Fuel Cell, LLC | Bridgeport Fuel Cell, LLC | Bridgeport, Connecticut | 105.1 GWh | Nov 2013 | Dec 2023 | Natural Gas |
| #5 | Bridgeport Station | Generation Bridge II Connecticut, LLC | Bridgeport, Connecticut | 3.5 TWh | Jul 1961 | Feb 2025 | Natural Gas : 98.6% Distillate Fuel Oil : 1.4% |
| #19 | Covanta Bristol Energy | Covanta Bristol Inc | Bristol, Connecticut | 108.1 GWh | Nov 1987 | Feb 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| #17 | Covanta Southeastern Connecticut Company | Covanta Southeastern Connecticut Company | Preston, Connecticut | 112.1 GWh | Nov 1991 | Feb 2025 | Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Distillate Fuel Oil : 1.6% |
| #3 | CPV Towantic Energy Center | CPV Towantic, LLC | Oxford, Connecticut | 5.6 TWh | Apr 2018 | Feb 2025 | Natural Gas |
| #23 | Generate Colchester Fuel Cells, LLC | Generate Colchester Fuel Cells, LLC | Colchester, Connecticut | 82.3 GWh | Sep 2021 | Dec 2023 | Natural Gas |
| #10 | Kimberly Clark-Unit 1,2,3 | Kimberly-Clark Corporation | New Milford, Connecticut | 217.4 GWh | Mar 2008 | Dec 2023 | Natural Gas |
| #6 | Kleen Energy Systems Project | Kleen Energy Systems, LLC | Middletown, Connecticut | 3.0 TWh | Jun 2011 | Feb 2025 | Natural Gas : 99.2% Distillate Fuel Oil : 0.8% |
| #2 | Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, Connecticut | 5.8 TWh | Feb 2002 | Feb 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 | 3.8 TWh | Jan 2004 | Feb 2025 | Natural Gas |
| #1 | Millstone | Dominion Energy Nuclear Conn Inc | Waterford, Connecticut | 17.1 TWh | Nov 1975 | Feb 2025 | Nuclear |
| #9 | Plainfield Renewable Energy LLC | Plainfield Renewable Energy, LLC | Plainfield, Connecticut | 233.8 GWh | Nov 2013 | Dec 2023 | Wood/Wood Waste Solids : 99.6% |
| #22 | Pratt & Whitney | United Technologies | East Hartford, Connecticut | 99.3 GWh | Dec 1991 | Feb 2025 | Natural Gas |
| #24 | Quinebaug Solar | Quinebaug Solar, LLC | Canterbury, Connecticut | 80.7 GWh | Nov 2021 | Feb 2025 | Solar |
| #14 | Rand Whitney CHP Plant | Rand Whitney Containerboard L.P. | Montville, Connecticut | 132.7 GWh | Mar 2005 | Feb 2025 | Natural Gas |
| #12 | Shepaug | FirstLight Power Resources Services LLC | Southbury, Connecticut | 163.1 GWh | Dec 1954 | Dec 2023 | Water |
| #18 | Stevenson | FirstLight Power Resources Services LLC | Monroe, Connecticut | 111.2 GWh | Dec 1918 | Dec 2023 | Water |
| #15 | UCONN Cogen Facility | University of Connecticut | Storrs, Connecticut | 123.2 GWh | Feb 2006 | Feb 2025 | Natural Gas : 98.9% Distillate Fuel Oil : 1.1% |
| #13 | Wallingford Energy | Wallingford Energy LLC | Wallingford, Connecticut | 161.3 GWh | Jul 2001 | Dec 2023 | Natural Gas |
| #8 | Wheelabrator Bridgeport | Wheelabrator Environmental Systems | Bridgeport, Connecticut | 447.3 GWh | Jun 1988 | Feb 2025 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| #21 | Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, Connecticut | 100.0 GWh | Sep 1995 | Feb 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 | 50 | 662.2 GWh | 532.1 GWh | 0.0 Wh | 103.7 GWh | 0.0 Wh |
| #2 | Greater Bridgeport Planning Region, CT | 10 | 7.0 TWh | 6.4 TWh | 0.0 Wh | 2.4 GWh | 0.0 Wh |
| #6 | Lower Connecticut River Valley Planning Region, CT | 15 | 3.2 TWh | 3.1 TWh | 0.0 Wh | 56.3 GWh | 0.0 Wh |
| #4 | Naugatuck Valley Planning Region, CT | 13 | 5.9 TWh | 5.6 TWh | 0.0 Wh | 8.1 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 | 92.9 GWh | 0.0 Wh | 10.6 GWh | 17.1 GWh | 0.0 Wh |
| #5 | South Central Connecticut Planning Region, CT | 23 | 4.1 TWh | 4.0 TWh | 0.0 Wh | 25.0 GWh | 0.0 Wh |
| #1 | Southeastern Connecticut Planning Region, CT | 50 | 18.0 TWh | 448.0 GWh | 0.0 Wh | 101.5 GWh | 17.1 TWh |
| #8 | Western Connecticut Planning Region, CT | 14 | 298.7 GWh | 243.7 GWh | 0.0 Wh | 0.0 Wh | 0.0 Wh |
Top 20 Electricity Producing Cities in Connecticut
| City | Net Generation | # Power Plants |
|---|---|---|
| Baltic, Connecticut | 140.0 GWh | 2 |
| Bridgeport, Connecticut | 6.8 TWh | 6 |
| Bristol, Connecticut | 116.1 GWh | 3 |
| Colchester, Connecticut | 82.9 GWh | 2 |
| Dayville, Connecticut | 5.9 TWh | 3 |
| East Hartford, Connecticut | 151.5 GWh | 4 |
| East Village, Connecticut | 111.2 GWh | 1 |
| Groton, Connecticut | 193.2 GWh | 8 |
| Hartford, Connecticut | 80.7 GWh | 4 |
| Middletown, Connecticut | 3.2 TWh | 7 |
| Milford city (balance), Connecticut | 3.8 TWh | 1 |
| Naugatuck, Connecticut | 5.6 TWh | 1 |
| New Milford, Connecticut | 269.3 GWh | 4 |
| Newtown, Connecticut | 163.1 GWh | 1 |
| Oxoboxo River, Connecticut | 248.9 GWh | 4 |
| Plainfield Village, Connecticut | 236.7 GWh | 3 |
| Storrs, Connecticut | 123.2 GWh | 1 |
| Wallingford Center, Connecticut | 183.0 GWh | 3 |
| Waterford, Connecticut | 17.1 TWh | 1 |
| Windsor Locks, Connecticut | 158.1 GWh | 3 |
Electricity Generation for Neighboring States
| National Rank | State | Net Generation | # Power Plants |
|---|---|---|---|
| #49 | Delaware | 4.9 TWh | 42 |
| #51 | District of Columbia | 185.1 GWh | 23 |
| #17 | Indiana | 97.0 TWh | 271 |
| #22 | Kentucky | 68.8 TWh | 85 |
| #45 | Maine | 13.5 TWh | 271 |
| #38 | Maryland | 36.8 TWh | 247 |
| #41 | Massachusetts | 20.8 TWh | 698 |
| #11 | Michigan | 125.9 TWh | 375 |
| #44 | New Hampshire | 17.5 TWh | 74 |
| #28 | New Jersey | 59.0 TWh | 475 |
| #10 | New York | 128.6 TWh | 1,166 |
| #9 | North Carolina | 136.6 TWh | 1,119 |
| #6 | Ohio | 145.4 TWh | 291 |
| #3 | Pennsylvania | 246.0 TWh | 371 |
| #46 | Rhode Island | 10.0 TWh | 114 |
| #15 | South Carolina | 100.6 TWh | 297 |
| #20 | Tennessee | 73.1 TWh | 114 |
| #50 | Vermont | 2.5 TWh | 140 |
| #14 | Virginia | 101.6 TWh | 315 |
| #31 | West Virginia | 52.5 TWh | 66 |
* Net Generation data is based on the last 12 months since Feb 2025