Electric Consumer

Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, EIA retail sales, EIA-860/923, EPA eGRID, Census ACS · How we got these numbers · Report an error

Connecticut electric companies, rates and outages

Connecticut has 3,598,348 residents and 1,713,431 electric accounts across 6 utilities listed by EIA.

345 kV electric transmission lines in Brookfield, Connecticut
345 kV Transmission Lines in Brookfield, Connecticut. Photo by Liam Enea, CC BY-SA 2.0, Wikimedia Commons. Illustrative, not a listed utility's plant.

In 2025 Connecticut homes paid 29.38 ¢/kWh: rank 5 of 51, 69.8% above the U.S. average of 17.30 ¢ (2024: 28.75 ¢).

Calculators for Connecticut

How it compares

Connecticut prices
Customer sector2024GapRank
Residential28.75 ¢/kWh+74.5% against the U.S.4 of 511 is highest
Commercial21.21 ¢/kWh+66.4% against the U.S.4 of 511 is highest
Industrial17.12 ¢/kWh+110.6% against the U.S.6 of 511 is highest

Electric companies in Connecticut

Connecticut home prices, 2024; lowest filled.

Connecticut companies
CompanyHome accountsAverage priceReliabilityNet metering
Town of WallingfordLowest price21,40515.65 ¢/kWh$109 a month at 695 kWhNo data1.4 MW64 systems
Groton Dept of Utilities12,28418.70 ¢/kWh$130 a month at 695 kWh22 minSAIDI, SAIFI 0.194.5 MW818 systems
Bozrah Light & Power Company2,43419.33 ¢/kWh$134 a month at 695 kWh184 minSAIDI, SAIFI 0.87No data
City of Norwich18,87022.78 ¢/kWh$158 a month at 695 kWh288 minSAIDI, SAIFI 1.451.7 MW73 systems
Connecticut Light & Power Co1,174,42025.31 ¢/kWh$176 a month at 695 kWh77 minSAIDI, SAIFI 0.651,005.4 MW82,491 systems
United Illuminating Co312,29131.06 ¢/kWh$216 a month at 695 kWh49 minSAIDI, SAIFI 0.62253.8 MW24,137 systems

Connecticut: 2025 and 2026

Connecticut, data to July 2026.

Connecticut 2025 average price
29.38 ¢/kWh+2.2% against 2024, U.S. +5.0%
Connecticut 2025 rank
5 of 51-1 places against 2024
Connecticut January to Jul 2026
27.97 ¢/kWh-7.7% on Jan-Jul 2025
Connecticut Last 12 months
27.99 ¢/kWhto July 2026
Connecticut July 2026
24.16 ¢/kWh-12.5% against July 2025
Connecticut 2025 costliest month
Feb 33.20 ¢cheapest Dec 25.30 ¢, a 31% spread
Connecticut Typical 2025 bill
$207 a monthtop Jul $282, low Oct $146

The Connecticut residential price averaged 29.38 ¢/kWh in 2025, +2.2% on 2024: Connecticut ran 2.8 points slower than the nation. From January to July 2026 the Connecticut average is 27.97 ¢, -7.7% on 2025, 14.8 points below the U.S. change. Seasonality in Connecticut: 2025 peaked in February at 33.20 ¢ and bottomed in December at 25.30 ¢. A typical residential account in Connecticut paid about $2,488 for energy over 2025, from $146 in October to $282 in July; use per account ran 525 to 1,020 kWh a month.

Connecticut price by month, 2024 to Jul 2026

Price by month, Connecticut: 12 rows
Month202420252026 to Jul
Jan27.3430.0228.30
Feb29.5133.2030.77
Mar29.1232.5030.47
Apr29.5932.2332.24
May26.7531.5927.37
Jun25.9727.1924.32
Jul28.0027.6024.16
Aug29.9630.24No data
Sep33.0530.48No data
Oct30.0027.72No data
Nov29.1527.02No data
Dec28.1225.30No data

12 rows from EIA retail sales.

CSV

What a typical Connecticut account paid each month

Connecticut: use per account times price, energy only.

Typical bill by month, Connecticut: 12 rows
Month20252026 to Jul
Jan266245
Feb242243
Mar209202
Apr176173
May169146
Jun202174
Jul282222
Aug240No data
Sep174No data
Oct146No data
Nov166No data
Dec218No data

12 rows from EIA retail sales.

CSV

What Connecticut power is made of

In plain words. Natural gas is the biggest source in Connecticut (56%), and the power made there is cleaner than the U.S. average per kWh. Plants with 8 MW are planned to retire by 2030. New plants with 86 MW are under construction.

In 2025 Connecticut plants of 1 MW or more made 43.8 TWh. The biggest sources: natural gas 56.5%, nuclear 38.2%, utility-scale solar 1.5%. For comparison, natural gas makes 40.9% of U.S. generation. Wind, solar and hydro together: 2.2% (22.6% for the U.S.). Connecticut plants only; imports and rooftop solar are not counted.

Connecticut, share of net generation, %

  • Coal
  • Natural gas 56.5
  • Nuclear 38.2
  • Hydro (conventional) 0.7
  • Wind 0.0
  • Utility-scale solar 1.5
  • Petroleum 0.8
  • Wood, biomass, geothermal, waste 1.4
  • Other 1.0

Fuel groups: prices guide.

Connecticut, share of net generation and operating capacity: 8 rows
SourceConnecticut share of generation, %U.S. share, %Connecticut generation, TWhConnecticut capacity, MW
Natural gas56.540.924.715,388
Nuclear38.217.716.712,260
Hydro (conventional)0.75.50.30149
Wind0.010.40.015
Utility-scale solar1.56.80.67493
Petroleum0.80.40.332,532
Wood, biomass, geothermal, waste1.41.40.61161
Other1.00.40.440

EIA-923 and EIA-860 for Connecticut, 2025 data, pulled 2 Oct 2026.

CSV

Connecticut plant pipeline

Connecticut, megawatts: 6 rows
Connecticut plantsMW
Operating, utility-scale10,988
Battery storage2
Retiring 2026 to 20308
Retiring after 203018
Under construction86
Planned208

EIA-860 generators in Connecticut, 2025 data.

CSV

Connecticut carbon per kWh

Connecticut plants emitted 538 lb of CO₂ per MWh in 2023 (0.244 kg per kWh), against 767 lb for the U.S. An average Connecticut home using 695 kWh a month accounts for about 170 kg of CO₂ a month at that rate. The rate is for Connecticut plants, not your supplier.

state and national values: 4 rows
MeasureConnecticutU.S.
CO₂, lb per MWh538.3767.2
CO₂, kg per kWh0.2440.348
NOx, lb per MWh0.1910.452
SO2, lb per MWh0.0720.359

EPA eGRID2023 for Connecticut, pulled 2 Oct 2026.

CSV

Who delivers and who sells in Connecticut

19.7% of Connecticut home accounts bought energy from a supplier other than the wires company in 2024 (10 suppliers reported), 1,552,746 accounts in all. Plan prices are not shown here: choosing a supplier.

Connecticut, largest wires companies: 2 rows
Connecticut wires companyDelivery-only home accounts
Connecticut Light & Power Co250,288
United Illuminating Co55,989

EIA-861 wires companies in Connecticut, 2024 data.

CSV
Connecticut, largest suppliers by home accounts: 5 rows
Connecticut supplierHome accounts
Constellation NewEnergy, Inc125,376
Town Square Energy67,591
Direct Energy Services51,430
Energywell LLC26,417
Adjustment 202412,681

EIA-861 suppliers in Connecticut, 2024 data.

CSV

Connecticut weather

A normal year in Connecticut brings 6,356 heating and 460 cooling degree-days (1991 to 2020). 2025 had 5,781 heating (9% below normal) and 684 cooling (49% above normal).

Connecticut degree-days by year

Heating and cooling degree-days, Connecticut, 2015 to 2025: 11 rows
Connecticut yearHeating (HDD)Cooling (CDD)Normal HDDNormal CDD
201559387156356460
201653647966356460
201754405926356460
201857398226356460
201959376666356460
202053447726356460
202154107066356460
202256277746356460
202350576316356460
202452027156356460
202557816846356460

NOAA nClimDiv degree-days for Connecticut, 2015 to 2025, pulled 2 Oct 2026.

CSV

Connecticut meters and time-of-use rates

21.7% of Connecticut home meters are advanced (AMI) meters: 351,804 of 1,619,969. 2 of 6 reporting utilities offer a home time-of-use rate, and 71,864 home accounts are enrolled in dynamic pricing programs.

EIA-861 meters in Connecticut, data year 2024, pulled 2 Oct 2026: homes.

Flood claims and flood insurance in Connecticut

Connecticut: 2,034 NFIP flood claims with a loss date in 2015 to 2025, $52.0M paid, median paid claim $14,669; 32nd of 55 states and territories by dollars paid. The peak year was 2021 with 963 claims. FEMA counts 2.1% of Connecticut residential structures as insured, 13th of 51, and the policy file shows 31,339 NFIP policies in force on 8 Sep 2026. Floods damage substations and lines, and in Connecticut this is claims history, not an outage count.

Connecticut: flood claims by state, flood claims by county. 2,034 Connecticut claims as of 8 Sep 2026, OpenFEMA NFIP; counts under 5 hidden.

Connecticut charts

Price by sector, Connecticut

Home 28.75, business 21.21, industry 17.12 ¢ in 2024.

Connecticut price by sector 2015-2024, 2015 to 2024: 10 rows
YearResidentialCommercialIndustrialGap to U.S. residential
201520.9415.9712.95+8.29
201620.0115.7512.81+7.46
201720.2916.0613.10+7.40
201821.2016.7613.77+8.33
201921.8716.7513.44+8.86
202022.7116.5813.07+9.56
202121.9116.469.63+8.25
202224.6118.5415.07+9.57
202329.8819.9915.69+13.88
202428.7521.2117.12+12.27

10 rows from EIA retail sales.

CSV

Largest utilities, SAIDI

Median of 5 reporters here: 76.9 minutes.

min

  • Connecticut Light & Power Co76.9
  • United Illuminating Co49.2
  • City of Norwich288.0
  • Groton Dept of Utilities22.5
  • Bozrah Light & Power Company184.1
  • U.S. median99.5

Connecticut, SAIDI of the largest Connecticut utilities: EIA-861 survey.

CSV

Median SAIDI by year, 2015-2024

69 minutes in 2015, 77 in 2024.

Median SAIDI by year, Connecticut, 2015 to 2024: 10 rows
YearConnecticut medianGap to U.S. median reporter
201569-32
2016105+3
201783-12
201883-18
201982-16
202061-36
202182-14
202297-6
2023137+38
202477-22

10 rows from EIA-861 survey.

CSV

Analyst note

Connecticut residential power was 2nd highest of 51 in 2015 at 20.94 ¢ and is 4th in 2024 at 28.75 ¢, so the state slid down 2 places. The U.S. figure went 12.65 to 16.48 ¢ while Connecticut went +37.3%. The biggest annual move was 2023 at +21.4%; the latest year, 2024, came in at -3.8% against +3.0% for the U.S. Business customers paid 15.97 ¢ in 2015 and 21.21 ¢ in 2024, a gap to homes of -4.97 ¢ then and -7.54 ¢ now; industry went from 12.95 to 17.12 ¢ (+32.2%). Reliability worsened at the 4 Connecticut utilities that report in both years: their median SAIDI went from 69 minutes in 2015 to 131 in 2024, +90%, against a U.S. median reporter of 99. Connecticut Light & Power Co is the largest by accounts with 1,290,878, 75.3% of the 1,713,431 accounts in Connecticut, and the top three hold 97.0%.

Connecticut ranks 4th of 51 on residential price (28.75 ¢), among the costliest, and 74.5% over the national average. Since 2015 the residential price moved +37.3% against +30.3% nationally, so Connecticut has pulled away from the national trend by 7.0 points.

Businesses pay 7.54 ¢ less than households here (-26.2%); business is under home price in 51 of 51. SAIDI for the typical reporter is 76.9 minutes across 5 utilities, under the national 99.5. Three utilities serve 97.8% of accounts.

By revenue, Connecticut electricity splits 56.1% residential, 37.3% commercial and 6.6% industrial; by kWh the split is 47.7%, 42.9% and 9.4%. Residential accounts are the largest revenue source here. Home accounts are 90.6% of 1,713,428 accounts and use 695 kWh a month, a commercial account 6,198 and an industrial one 55,116.

Facts

Residents (ACS 2023)
3,598,3481,420,170 households
Electric accounts
1,713,431476 per 1,000 residents
Residential price
28.75 ¢/kWh+12.27 ¢ against the U.S.
Commercial price
21.21 ¢/kWh+8.46 ¢ against the U.S.
Industrial price
17.12 ¢/kWh+8.99 ¢ against the U.S.
Residential since 2015
+37.3%+7.0 points vs U.S.
Retail sales
27.4 TWh7,601 kWh a resident
Utilities listed
64 municipal, 2 investor owned
Median SAIDI
76.9 min5 utilities, 0.77x U.S.
Net-metered capacity
1,267 MW107,583 installations
Top three utilities
97.8%of utility accounts
Business minus home
-7.54 ¢-26.2% of the home price
Counties with 2+ utilities
3 of 8most: New London, 4 utilities

Data tables

Connecticut: price by year

YearHomeBusinessIndustryHome vs U.S.
201520.9415.9712.95+8.29
201620.0115.7512.81+7.46
201720.2916.0613.10+7.40
201821.2016.7613.77+8.33
201921.8716.7513.44+8.86
202022.7116.5813.07+9.56
202121.9116.469.63+8.25
202224.6118.5415.07+9.57
202329.8819.9915.69+13.88
202428.7521.2117.12+12.27

Questions on Connecticut

How many cents per kWh do Connecticut homes pay?

28.75 cents in 2024, which is +12.27 cents against the U.S. figure.

Did Connecticut electricity get more expensive after 2015?

It went from 20.94 to 28.75 cents, +37.3% in total, +7.0 points against the U.S.

How many utilities does EIA list for Connecticut?

6 utilities have Connecticut as their largest state, and 5 of them report SAIDI.

How much solar net metering exists in Connecticut?

1,267 MW over 107,583 installations.

How many electric accounts does Connecticut have per 1,000 residents?

476: 1,713,431 accounts for 3,598,348 residents.

Do Connecticut businesses pay more than households?

Businesses pay 21.21 ¢ and homes 28.75 ¢, a difference of -7.54 ¢.

What did Connecticut residential electricity cost in 2025?

Connecticut averaged 29.38 cents per kWh, +2.2% against 28.75 in 2024, and 5 of 51 among states.

Are Connecticut residential electricity prices rising in 2026?

Connecticut is -14.8 points against the U.S.: 27.97 cents from January to July 2026, -7.7% on 2025.

When in 2025 did Connecticut residential power cost most, February or December?

February at 33.20 cents in Connecticut; December was the lowest at 25.30, a 31% spread.

Does Connecticut residential power cost more than the national average in 2026?

9.75 cents above the national average; Connecticut 27.97 cents over January to July 2026, -7.7% on 2025.

States with a similar home price

Closest to Connecticut at 28.75 ¢/kWh, by 2024 average home price.

More on Connecticut

How Connecticut ranks and compares

Connecticut is 47th cheapest of 51 on price (29.38 ¢); 8th of 44 on outage minutes (74 min); 15th cleanest grid (538 lb CO2 per MWh); 12th highest income burden (2.65%).

All rankings, price, income and outages explorer, compare two states.

Help paying the bill in Connecticut

Connecticut has $90.2 million in federal energy-assistance money for FY2026, shutoff rules and phone lines. Open the Connecticut help page.

More on Connecticut

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In 2025 Connecticut homes paid 29.38 ¢/kWh: rank 5 of 51, 69.8% above the U.S. average of 17.30 ¢ (2024: 28.75 ¢).

Cite this page

Underlying data are U.S. government works (EIA, Census Bureau). Our tables and charts: CC BY 4.0, credit Electric Consumer. The access date fills in when you open this page.

APA

Electric Consumer. (2026). Connecticut electricity rates 2025: price per kWh, utilities and outages. Data as of 2 October 2026. Retrieved [date accessed], from https://electricconsumer.org/states/connecticut.html

MLA

Electric Consumer. “Connecticut electricity rates 2025: price per kWh, utilities and outages.” Electric Consumer, data as of 2 October 2026, https://electricconsumer.org/states/connecticut.html. Accessed [date accessed].

Chicago

Electric Consumer. “Connecticut electricity rates 2025: price per kWh, utilities and outages.” Data as of 2 October 2026. Accessed [date accessed]. https://electricconsumer.org/states/connecticut.html.

BibTeX

@misc{usedata_states_connecticut,
  author = "Electric Consumer",
  title = {Connecticut electricity rates 2025: price per kWh, utilities and outages},
  year = {2026},
  url = {https://electricconsumer.org/states/connecticut.html},
  note = {Data as of 2 October 2026. Accessed [date accessed]}
}
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