Power outages in Groton, CT
Live outages for Groton and the surrounding area, updated every 10 minutes. Groton has 10,160 residents.
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No live outage data for Groton yet.
Outage map
Outage history in Southeastern Connecticut Planning Region, which includes Groton
2014–2025 recordSoutheastern Connecticut Planning Region averaged 28.3 significant outages a year in 2023–2025, about typical for Connecticut counties.
In the 12 months to December 2025, there were 85. Half were over within 2.5 hours; the longest lasted 2.3 days, starting October 12, 2025.
The largest on record began December 19, 2025, with 8,294 customers out at once.
Outages are most common in June.
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At least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.i
Half of significant outages here ended sooner than this, and half lasted longer.| Largest events (start) | Peak out | LastediHow long this area stayed at or above the significant-outage line, not how long any one home was without power. | Customer-hoursiCustomers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours. |
|---|---|---|---|
| December 19, 2025 | 8,294 | 2.3 days | 144,361 |
| July 3, 2025 | 5,882 | 20 hours | 17,971 |
| September 14, 2025 | 3,073 | 22 hours | 7,869 |
| October 12, 2025 | 2,867 | 2.3 days | 31,313 |
| October 30, 2025 | 2,716 | 16 hours | 3,657 |
Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).i
From EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.