– 0 customers out in Connecticut
Power outage history
Connecticut
7.3hours
without power for the average customer in a typical year, 2018–2025. 16th of 51.
Electricity customers 1,689,447 Across 8 counties
Worst well-recorded year 2020 38 hours without power, average customer
County by county
Where Connecticut goes dark
Hours without power for the average customer in a typical year. Hover a county; click to open it.
Fewer hours64+ h / yr
Year by year
Hours in the dark, statewide
The record
Connecticut's largest outages
Statewide events with at least 2% of customers, or 25,000, out at once, by peak.
| Began | Storm | Peak out | Share |
|---|---|---|---|
| Aug 4, 2020 | Hurricane Isaias | 725,700 | 43.0% |
| Oct 29, 2017 | Windstorm | 180,476 | 10.7% |
| Mar 7, 2018 | Winter storm | 170,041 | 10.1% |
| May 15, 2018 | Thunderstorms | 134,816 | 8.0% |
| Jun 23, 2015 | Thunderstorms | 107,973 | 6.4% |
| Dec 23, 2022 | Windstorm | 106,021 | 6.3% |
| Nov 1, 2019 | Windstorm | 90,583 | 5.4% |
| Dec 18, 2023 | Windstorm | 86,770 | 5.1% |
| Feb 25, 2016 | Thunderstorms | 82,947 | 4.9% |
| Mar 2, 2018 | Windstorm | 74,164 | 4.4% |
| Feb 5, 2016 | Winter storm | 70,221 | 4.2% |
| Aug 27, 2020 | Thunderstorms | 63,912 | 3.8% |
| Jun 26, 2024 | Thunderstorms | 50,001 | 3.0% |
| Apr 13, 2020 | Windstorm | 49,888 | 2.9% |
| Oct 17, 2019 | Flooding | 45,516 | 2.7% |
| Nov 15, 2020 | Thunderstorms | 43,020 | 2.5% |
| Nov 30, 2020 | Windstorm | 39,131 | 2.3% |
| May 18, 2018 | No storm report | 36,831 | 2.2% |
| Sep 2, 2021 | Hurricane Ida | 36,822 | 2.2% |
| Dec 25, 2020 | Windstorm | 36,145 | 2.1% |
Every county
All 8 counties
| County | Hours / yr | Major outages since 2018 | Customers |
|---|---|---|---|
| Litchfield | 13 | 7 | 102,535 |
| Windham | 12 | 11 | 66,275 |
| Fairfield | 11 | 3 | 310,526 |
| Middlesex | 9.5 | 7 | 94,735 |
| New London | 9.2 | 11 | 78,303 |
| Tolland | 8.5 | 8 | 80,653 |
| New Haven | 5.7 | 4 | 383,498 |
| Hartford | 3.9 | 1 | 572,922 |
Who keeps the lights on
Utilities in Connecticut
Reliability and residential price as reported to the EIA for the latest year. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | ¢/kWh | Customers |
|---|---|---|---|---|---|
| Connecticut Light & Power Co | Investor Owned | 217 | 85 | 28.9 | 1.2M |
| United Illuminating Co | Investor Owned | 73 | 39 | 35.4 | 315k |
| Town of Wallingford | Municipal | 53 | 53 | 17.8 | 21k |
| Sunrun Inc. | Behind the Meter | – | – | 28.7 | 19k |
| City of Norwich | Municipal | 169 | 169 | 23.4 | 19k |
| Groton Dept of Utilities | Municipal | 71 | 71 | 18.1 | 13k |
| Tesla Inc. | Behind the Meter | – | – | 17.4 | 8.4k |
| SunPower Capital, LLC | Behind the Meter | – | – | 19.1 | 3.7k |
| Bozrah Light & Power Company | Municipal | 126 | 79 | 19.8 | 2.4k |
| Palmetto Solar, LLC | Behind the Meter | – | – | 22.6 | 1.9k |
| Spruce Finance | Behind the Meter | – | – | 17.0 | 1.8k |