County annual report · FIPS 37075
2021 Graham County, NC Power Outage Report
In 2021, customers in Graham County, NC went without power for an average of - hours, a total of 38K 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 Graham 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 17, 2021 22:15 | August 18, 2021 18:15 | 20h | 1,667 | 1,073 |
| 2 | March 11, 2021 15:15 | March 11, 2021 16:00 | 45m | 704 | 219 |
| 3 | May 9, 2021 17:45 | May 11, 2021 00:15 | 1d 6h | 660 | 4,862 |
| 4 | September 2, 2021 14:15 | September 2, 2021 22:15 | 8h | 611 | 3,586 |
| 5 | April 1, 2021 01:30 | April 1, 2021 06:15 | 4h 45m | 602 | 2,041 |
| 6 | November 22, 2021 04:30 | November 22, 2021 06:15 | 1h 45m | 598 | 516 |
| 7 | September 1, 2021 01:15 | September 1, 2021 22:15 | 21h | 431 | 8,164 |
| 8 | November 16, 2021 15:30 | November 16, 2021 21:00 | 5h 30m | 379 | 1,612 |
| 9 | May 3, 2021 13:45 | May 3, 2021 15:15 | 1h 30m | 343 | 515 |
| 10 | July 25, 2021 02:45 | July 25, 2021 06:15 | 3h 30m | 314 | 468 |
Outage episodes by size in 2021: 26 reached 100+ customers, 1 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 Graham 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 | - | - | - | - | - |
| Tennessee Valley Authority | - | - | - | - | - |
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. Graham County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Graham 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/graham-county