Sources of Connecticut utility-scale electricity generation:
full-year 2023 [1]
This is a list of electricity-generating power stations in the U.S. state of Connecticut , sorted by type and name. In 2022, Connecticut had a total summer capacity of 10,108 MW through all of its power plants, and a net generation of 43,054 GWh. [2] In 2023, the electrical energy generation mix was 61.3% natural gas, 34.2% nuclear, 1.1% biomass & refuse-derived fuels, 1% solar, 0.9% hydroelectric, 0.4% petroleum, and 1.1% other. Distributed small-scale solar, including customer-owned photovoltaic panels, delivered an additional net 1,243 GWh to the state's electricity grid in 2023. This compares as nearly three times the amount generated by Connecticut's utility-scale solar facilities. [1]
| Plant Name | Location | Coordinates | Capacity (MW) | Technology | Year Completed | Refs |
|---|---|---|---|---|---|---|
| Millstone Nuclear Power Plant | New London County | 2,162.9 | Nuclear |
Retired plants:
The last coal-fired plant was retired in 2021. [4]
| Plant Name | Location | Coordinates | Capacity (MW) | Technology | Year Completed | Refs |
|---|---|---|---|---|---|---|
| Backus Microgrid Project | New London County | 10.4 | Petroleum Liquids | |||
| Branford | New Haven County | 21.8 | Petroleum Liquids | |||
| Bridgeport Station | Fairfield County | 17 | Petroleum Liquids [A] | |||
| Bridge Street 1 & 2 | New London County | 5.2 | Petroleum Liquids | |||
| Devon Station | New Haven County | 222.6 | Petroleum Liquids | |||
| Franklin Drive | Litchfield County | 21.8 | Petroleum Liquids | |||
| CCSU Co-Gen-STBY Gen | Hartford County | 1 | Petroleum Liquids [A] | |||
| Cos Cob [B] | Fairfield County | 115 | Petroleum Liquids | |||
| Fort Hill 1, 2, 3 & 4 | New London County | 10.4 | Petroleum Liquids | |||
| Gary Court 1 & 2 | New London County | 6 | Petroleum Liquids | |||
| Jewett City 1 | New London County | 2.6 | Petroleum Liquids | |||
| LNG 1 & 2 | New London County | 5.2 | Petroleum Liquids | |||
| Lebanon Pines 1 & 2 | New London County | 5.2 | Petroleum Liquids | |||
| Middletown | Middlesex County | 417.2 | Petroleum Liquids [A] | |||
| Montville Station | New London County | 495.3 | Petroleum Liquids | |||
| New Haven Harbor | New Haven County | 128.7 | Petroleum Liquids [A] | |||
| Norden 1-3 | Fairfield County | 6 | Petroleum Liquids | |||
| North Main Street | New London County | 19 | Petroleum Liquids | |||
| Norwich WWTP | New London County | 2 | Petroleum Liquids | |||
| South Meadow | Hartford County | 167.2 | Petroleum Liquids | |||
| Torrington Terminal | Litchfield County | 21.8 | Petroleum Liquids | |||
| Tunnel | New London County | 16.5 | Petroleum Liquids [A] | |||
| Waterside Power, LLC | Fairfield County | 69.6 | Petroleum Liquids | |||
| Water Treatment 1 & 2 | New London County | 5.2 | Petroleum 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
| Plant Name | Location | Coordinates | Capacity (MW) | Technology | Year Completed | Refs |
|---|---|---|---|---|---|---|
| A L Pierce | New Haven County | 84 | Natural Gas Fired Combustion Turbine | |||
| Algonquin Windsor Locks | Hartford County | 71 | Natural Gas Fired Combined Cycle | |||
| Bradley Energy Center | Hartford County | 5.8 | Natural Gas Internal Combustion Engine | |||
| Bridgeport Energy Project | Fairfield County | 520 | Natural Gas Fired Combined Cycle | |||
| Bridgeport Fuel Cell, LLC | Fairfield County | 16.6 | Other Natural Gas | |||
| Bridgeport Station | Fairfield County | 576.3 | Natural Gas Fired Combined Cycle [A] | |||
| CCSU Co-Gen-STBY Gen | Hartford County | 2.6 | Natural Gas Internal Combustion Engine [A] | |||
| CCSU Fuel Cell Project | Hartford County | 1.4 | Other Natural Gas | |||
| CJTS Energy Center | Middlesex County | 0.4 | Other Natural Gas | |||
| CPV Towantic Energy Center | New Haven County | 841.5 | Natural Gas Fired Combined Cycle | |||
| Capitol District Energy Center | Hartford County | 70.5 | Natural Gas Fired Combined Cycle | |||
| Cellu Tissue | Hartford County | 3 | Natural Gas Internal Combustion Engine | |||
| Danbury Hospital Cogen Plant | Fairfield County | 4.3 | Natural Gas Fired Combustion Turbine | |||
| Digital Fairfield | Fairfield County | 2 | Other Natural Gas | |||
| Fairfield University CHP Plant | Fairfield County | 4.5 | Natural Gas Fired Combustion Turbine | |||
| Frito Lay Incorporated | Windham County | 4.6 | Natural Gas Fired Combustion Turbine | |||
| Foxwoods CoGen | New London County | 162 | Natural Gas Fired Combined Cycle | |||
| HSCo CHP | Hartford County | 4 | Natural Gas Fired Combustion Turbine | |||
| Hartford Hospital Cogeneration | Hartford County | 11.8 | Other Natural Gas Natural Gas Fired Combined Cycle | |||
| IBM Southbury | New Haven County | 1.1 | Other Natural Gas | |||
| IKEA New Haven Rooftop PV & Fuel Cell | New Haven County | 0.3 | Other Natural Gas [A] | |||
| Lake Road Generating Plant | Windham County | 840 | Natural Gas Fired Combined Cycle | |||
| Kleen Energy Systems, LLC | Middlesex County | 693 | Natural Gas Fired Combined Cycle | |||
| Kimberly Clark-Unit 1,2,3 | Litchfield County | 36.3 | Natural Gas Fired Combined Cycle Natural Gas Fired Combustion Turbine | |||
| Middletown | Middlesex County | 417.2 | Natural Gas Steam Turbine [A] | |||
| Milford Power Project | New Haven County | 578 | Natural Gas Fired Combined Cycle | |||
| New Haven Harbor | New Haven County | 447.9 | Natural Gas Steam Turbine [A] | |||
| Pepperidge Farm Bloomfield | Hartford County | 2.6 | Other Natural Gas | |||
| Pfizer Groton Fuel Cell | New London County | 5.6 | Other Natural Gas | |||
| Pfizer Groton Plant | New London County | 37.5 | Natural Gas Fired Combustion Turbine Natural Gas Steam Turbine | |||
| Pratt & Whitney | Hartford County | 25.8 | Natural Gas Fired Combustion Turbine | |||
| Rand Whitney CHP Plant | New London County | 14.6 | Natural Gas Fired Combustion Turbine | |||
| South Windsor Fuel Cell | Hartford County | 5 | Other Natural Gas | |||
| Sikorsky Aircraft CHP | Fairfield County | 9.3 | Natural Gas Fired Combustion Turbine [A] | |||
| TRS Fuel Cell | Fairfield County | 3.7 | Other Natural Gas | |||
| Trinity College Fuel Cell | Hartford County | 1.4 | Other Natural Gas | |||
| UB Fuel Cell | Fairfield County | 1.4 | Other Natural Gas | |||
| UCONN Cogen Facility | Tolland County | 25.7 | Natural Gas Fired Combined Cycle | |||
| UI RCP Bridgeport Seaside | Fairfield County | 2.5 | Other Natural Gas [A] | |||
| UI RCP New Haven Fuel Cell | New Haven County | 2.8 | Other Natural Gas | |||
| UI RCP Woodbridge FC | New Haven County | 2.8 | Other Natural Gas | |||
| Waterbury Generation | New Haven County | 96 | Natural Gas Steam Turbine | |||
| Wesleyan University Cogen 1 | Middlesex County | 2.4 | Natural Gas Internal Combustion Engine |
A Multi-fuel plant, listed is "Total Net Summer Capacity" by source.
| Plant Name | Location | Coordinates | Capacity (MW) | Technology | Year Completed | Notes | Refs |
|---|---|---|---|---|---|---|---|
| Covanta Bristol Energy | Hartford County | 16.9 | Municipal Solid Waste | ||||
| Covanta Southeastern Connecticut Company | New London County | 18.3 | Municipal Solid Waste | ||||
| CT Resource Rec Authority Facility | Hartford County | 90 | Municipal Solid Waste | Closed July 2022 | [5] | ||
| Exeter Energy LP | Windham County | 31.3 | Tire-derived fuel (TDF) | [6] | |||
| Plainfield Renewable Energy LLC | Windham County | 43 | Wood/Wood Waste Biomass | ||||
| New Milford Gas Recovery | Litchfield County | 2.4 | Landfill gas | ||||
| Win Waste Innovations Bridgeport | Fairfield County | 67 | Municipal Solid Waste | ||||
| Win Waste Innovations Lisbon | New London County | 14.6 | Municipal Solid Waste |
There were no utility-scale Geothermal facilities in the state of Connecticut in 2019.
| Plant Name | Location | Coordinates | Capacity (MW) | Year Completed | Refs |
|---|---|---|---|---|---|
| Quinebaug Lower Project | Windham County | 2.5 | |||
| Bulls Bridge | Litchfield County | 7.2 | |||
| Falls Village | Litchfield County | 9 | |||
| Goodwin Hydroelectric | Hartford County | 3.2 | |||
| Kinneytown New Old | New Haven County | 2.3 | |||
| McCallum Enterprises I LP | Fairfield County | 8.6 | |||
| Rainbow (CT) | Hartford County | 8 | |||
| Scotland Dam | Windham County | 2 | |||
| Shepaug | New Haven County | 37.2 | |||
| Stevenson | Fairfield County | 30.5 | |||
| Taftville | New London County | 1.6 | |||
| Tenth Street | New London County | 1.4 | |||
| Tunnel | New Haven County | 1.6 [A] |
A Multi-fuel plant, listed is "Total Net Summer Capacity" by source.
| Plant | Location | Area | Capacity (MW) | Refs |
|---|---|---|---|---|
| Adams Solar | New London County | 1 | ||
| Advance Stores Company, Inc | Hartford County | 1 | ||
| ALDI DC 2 | Hartford County | 1.2 | ||
| Amazon_BLD3 | New Haven County | 1 | ||
| Antares-GRE 314 East Lyme LLC | New London County | 4 | ||
| Barrett Farm Solar - Phase I | Windham County | 1.7 | ||
| Becton Canaan | Litchfield County | 2.5 | ||
| Brass Mill Center | New Haven County | 3.4 | ||
| CMEEC - Bozrah | New London County | 2.5 | ||
| CMEEC - Navy NE Trident | New London County | 1 | ||
| CMEEC - Norwich Stott St Solar Hybrid | New London County | 4.3 | ||
| CMEEC - Polaris Park Solar Hybrid | New London County | 4.3 | ||
| CP Middletown Solar I LLC | Middlesex County | 1 | ||
| Canis Major Solar Farm | Hartford County | 2 | ||
| Canis Minor Solar Farm | Litchfield County | 1 | ||
| Conn Mun Electric Energy Coop | New London County | 2.5 | ||
| Corbin Russwin Phase 3 Berlin | Hartford County | 1 | ||
| DWW Solar II | Hartford County | 36.9 | ||
| Franklin Solar | New London County | 1 | ||
| Fusion Solar Center LLC | New London County | 20 | ||
| Hamilton Solar | New London County | 1 | ||
| Hartford Landfill Solar EGF | Hartford County | 1 | ||
| IKEA New Haven Rooftop PV & Fuel Cell [A] | New Haven County | 0.8 | ||
| Jackson Solar (CT) | New London County | 1 | ||
| Jefferson Solar | New London County | 1 | ||
| Manchester Community College East | Hartford County | 1 | ||
| Manchester Community College North | Hartford County | 1 | ||
| Plainfield Solar 2 | Windham County | 1 | ||
| Sherman Solar | New London County | 1 | ||
| Sikorsky Aircraft CHP [A] | Fairfield County | 0.1 | ||
| Somers Solar Center, LLC | Tolland County | 5 | ||
| Stafford MS Ground Mount Community Solar | Tolland County | 2 | ||
| Ticket Network South Windsor | Hartford County | 1 | ||
| Town of Branford | New Haven County | 1.1 | ||
| Town of Rocky Hill PV CSG | Hartford County | 3 | ||
| UI RCP Bridgeport Seaside [A] | Fairfield County | 2.2 | ||
| Wilson Solar | New London County | 1 | ||
| Woods Hill Solar | Windham County | 20 |
A Multi-fuel plant, listed is "Total Net Summer Capacity" by source.
| Plant | Location | Area | Capacity (MW) | Refs |
|---|---|---|---|---|
| Wind Colebrook South | Litchfield County | 5 | ||
There were no utility-scale Battery Storage facilities in the state of Connecticut in 2019.
| Plant | Location | Area | Capacity (MW) | Refs |
|---|---|---|---|---|
| Rocky River | Litchfield County | 31 | ||
Electricity generation is the process of generating electric power from sources of primary energy. For utilities in the electric power industry, it is the stage prior to its delivery to end users or its storage, using for example, the pumped-storage method.
The net capacity factor is the unitless ratio of actual electrical energy output over a given period of time to the theoretical maximum electrical energy output over that period. The theoretical maximum energy output of a given installation is defined as that due to its continuous operation at full nameplate capacity over the relevant period. The capacity factor can be calculated for any electricity producing installation, such as a fuel consuming power plant or one using renewable energy, such as wind, the sun or hydro-electric installations. The average capacity factor can also be defined for any class of such installations, and can be used to compare different types of electricity production.
Energy in California is a major area of the economy of California. California is the state with the largest population and the largest economy in the United States. It is second in energy consumption after Texas. As of 2018, per capita consumption was the fourth-lowest in the United States partially because of the mild climate and energy efficiency programs.
