Power outages in Summerville, SC
Live outages for Summerville and the surrounding area, updated every 10 minutes. Summerville has 53,177 residents.
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No live outage data for Summerville yet.
Outage map
SummervilleDorchester County
Outage history in Dorchester County, which includes Summerville
2014–2025 recordDorchester County averaged 37 significant outages a year in 2023–2025, about typical for South Carolina counties.
In the 12 months to December 2025, there were 44. Half were over within 1 hour; the longest lasted 18 hours, starting July 24, 2025.
The largest on record began October 8, 2016, with 50,197 customers out at once.
37significant outages a year (2023–2025)
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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.1 hourtypical (median) length
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Half of significant outages here ended sooner than this, and half lasted longer.4.9 dayslongest on record (October 2016)
50,197most customers out at once
| 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. |
|---|---|---|---|
| October 8, 2016 | 50,197 | 4.9 days | 1,378,340 |
| September 5, 2019 | 41,166 | 1.8 days | 684,787 |
| September 30, 2022 | 25,331 | 31 hours | 139,890 |
| September 27, 2024 | 23,470 | 2.8 days | 323,919 |
| September 11, 2017 | 16,079 | 25 hours | 109,217 |
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.