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 Mar 2025.

Companies on File	132
Plants on File	214
Total Generation	3.83G MMBtu
Total Sales	2.11G kWh
Total Revenue	$593.29M

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

45.5 TWh

Total Annual Fuel Consumption

430.0 M MMBtu

Electric Companies in Connecticut

132

Connecticut
Power Plants

214

Natural Gas Rank

#17

Coal Rank

#45

Nuclear Rank

#16

Hydroelectric Rank

#36

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	1.01G kWh	32.55 cents/kWh	$327.21M
Commercial	882.85M kWh	25.18 cents/kWh	$222.33M
Industrial	205.13M kWh	19.82 cents/kWh	$40.66M
Transportation	16.74M kWh	18.46 cents/kWh	$3.09M
Total	2.11G kWh	28.12 cents/kWh	$593.29M

* Data is aggregated from Jan 2001 to Mar 2025.

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	120.5 GWh	Dec 1989	Mar 2025	Natural Gas : 99.9%
#7	Bridgeport Energy Project	Bridgeport Energy LLC	Bridgeport, Connecticut	2.8 TWh	May 1998	Mar 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	Mar 2025	Natural Gas : 98.6% Distillate Fuel Oil : 1.4%
#19	Covanta Bristol Energy	Covanta Bristol Inc	Bristol, Connecticut	108.5 GWh	Nov 1987	Mar 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	112.2 GWh	Nov 1991	Mar 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	5.6 TWh	Apr 2018	Mar 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	Mar 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	Mar 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	Mar 2025	Natural Gas
#1	Millstone	Dominion Energy Nuclear Conn Inc	Waterford, Connecticut	17.1 TWh	Nov 1975	Mar 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	91.7 GWh	Dec 1991	Mar 2025	Natural Gas
#24	Quinebaug Solar	Quinebaug Solar, LLC	Canterbury, Connecticut	80.8 GWh	Nov 2021	Mar 2025	Solar
#14	Rand Whitney CHP Plant	Rand Whitney Containerboard L.P.	Montville, Connecticut	132.5 GWh	Mar 2005	Mar 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	123.5 GWh	Feb 2006	Mar 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	460.4 GWh	Jun 1988	Mar 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
#21	Wheelabrator Lisbon	Wheelabrator Environmental Systems	Lisbon, Connecticut	98.6 GWh	Sep 1995	Mar 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%

* Data is based on the last 12 months since Mar 2025.

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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	659.5 GWh	525.3 GWh	0.0 Wh	110.4 GWh	0.0 Wh
#2	Greater Bridgeport Planning Region, CT	10	7.1 TWh	6.5 TWh	0.0 Wh	2.4 GWh	0.0 Wh
#6	Lower Connecticut River Valley Planning Region, CT	15	3.3 TWh	3.1 TWh	0.0 Wh	56.1 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	10.7 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	447.7 GWh	0.0 Wh	101.8 GWh	17.1 TWh
#8	Western Connecticut Planning Region, CT	14	293.8 GWh	243.7 GWh	0.0 Wh	0.0 Wh	0.0 Wh

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

View All Counties in Connecticut

Top 20 Electricity Producing Cities in Connecticut

City	Net Generation	# Power Plants
Baltic, Connecticut	138.7 GWh	2
Bridgeport, Connecticut	6.9 TWh	6
Bristol, Connecticut	116.5 GWh	3
Colchester, Connecticut	82.9 GWh	2
Dayville, Connecticut	5.9 TWh	3
East Hartford, Connecticut	144.2 GWh	4
East Village, Connecticut	111.2 GWh	1
Groton, Connecticut	193.4 GWh	8
Middletown, Connecticut	3.2 TWh	7
Milford city (balance), Connecticut	3.8 TWh	1
Naugatuck, Connecticut	5.6 TWh	1
New Milford, Connecticut	264.3 GWh	4
Newtown, Connecticut	163.1 GWh	1
Oxoboxo River, Connecticut	249.0 GWh	4
Plainfield Village, Connecticut	236.7 GWh	3
Storrs, Connecticut	123.5 GWh	1
Wallingford Center, Connecticut	183.0 GWh	3
Waterford, Connecticut	17.1 TWh	1
Wauregan, Connecticut	80.8 GWh	1
Windsor Locks, Connecticut	155.7 GWh	3

* Data is based on the last 12 months since Mar 2025.

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Electricity Generation for Neighboring States

National Rank	State	Net Generation	# Power Plants
#49	Delaware	4.9 TWh	42
#51	District of Columbia	179.8 GWh	23
#17	Indiana	98.6 TWh	271
#23	Kentucky	69.5 TWh	85
#45	Maine	13.5 TWh	271
#39	Maryland	36.7 TWh	247
#41	Massachusetts	21.1 TWh	698
#11	Michigan	127.3 TWh	375
#44	New Hampshire	17.4 TWh	74
#28	New Jersey	59.0 TWh	475
#10	New York	128.1 TWh	1,166
#9	North Carolina	136.1 TWh	1,119
#7	Ohio	143.1 TWh	292
#3	Pennsylvania	245.6 TWh	371
#46	Rhode Island	10.0 TWh	114
#15	South Carolina	101.2 TWh	297
#20	Tennessee	71.7 TWh	114
#50	Vermont	2.5 TWh	140
#14	Virginia	101.6 TWh	315
#31	West Virginia	51.9 TWh	66

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