County annual report · FIPS 37173
2021 Swain County, NC Power Outage Report
In 2021, customers in Swain County, NC went without power for an average of - hours, a total of 116K customer-hours (North Carolina average 10.3 hours).
Compared with NC, the US and 2020
No loaded years to plot yet.
Coverage line is EAGLE-I's share of North Carolina customers tracked each year.
Biggest outages in Swain County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 29, 2021 19:45 | August 30, 2021 03:15 | 7h 30m | 2,109 | 5,824 |
| 2 | June 29, 2021 00:45 | June 29, 2021 07:45 | 7h | 1,958 | 8,133 |
| 3 | March 28, 2021 11:45 | March 29, 2021 06:30 | 18h 45m | 1,798 | 5,845 |
| 4 | February 1, 2021 18:30 | February 1, 2021 19:45 | 1h 15m | 1,619 | 1,619 |
| 5 | June 11, 2021 08:15 | June 11, 2021 13:15 | 5h | 1,531 | 7,648 |
| 6 | May 13, 2021 12:30 | May 13, 2021 15:45 | 3h 15m | 1,512 | 2,967 |
| 7 | November 5, 2021 14:45 | November 5, 2021 18:15 | 3h 30m | 1,365 | 1,964 |
| 8 | November 11, 2021 15:45 | November 11, 2021 17:45 | 2h | 1,362 | 2,045 |
| 9 | November 10, 2021 20:45 | November 10, 2021 21:15 | 30m | 1,358 | 679 |
| 10 | February 9, 2021 18:15 | February 10, 2021 00:15 | 6h | 1,341 | 878 |
Outage episodes by size in 2021: 61 reached 100+ customers, 13 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Swain County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Duke Energy Carolinas, LLC | 2021 | 3.5 hrs | 1.20 | 2.5 hrs | 1.10 |
| Duke Energy | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 92% of North Carolina's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ modeled customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Swain County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Swain County, NC annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/north-carolina/swain-county