County annual report · FIPS 37063
2021 Durham County, NC Power Outage Report
In 2021, customers in Durham County, NC went without power for an average of 68.5 hours, a total of 412K customer-hours (North Carolina average 10.3 hours). That ranks 7th worst of 94 North Carolina counties and 119th of 2,974 nationally.
Compared with NC, the US and 2020
Coverage line is EAGLE-I's share of North Carolina customers tracked each year.
Biggest outages in Durham 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 | January 13, 2021 12:45 | January 13, 2021 21:00 | 8h 15m | 12,552 | 14K |
| 2 | March 18, 2021 19:15 | March 19, 2021 04:45 | 9h 30m | 8,247 | 18K |
| 3 | August 14, 2021 20:00 | August 16, 2021 08:15 | 1d 12h | 7,971 | 60K |
| 4 | July 8, 2021 13:15 | July 11, 2021 05:15 | 2d 16h | 7,600 | 20K |
| 5 | December 20, 2021 04:15 | December 20, 2021 09:30 | 5h 15m | 6,373 | 22K |
| 6 | August 10, 2021 10:45 | August 12, 2021 03:45 | 1d 17h | 5,565 | 20K |
| 7 | November 22, 2021 15:15 | November 23, 2021 04:00 | 12h 45m | 5,454 | 5,078 |
| 8 | January 29, 2021 00:30 | January 29, 2021 05:45 | 5h 15m | 3,532 | 5,325 |
| 9 | September 29, 2021 12:45 | September 30, 2021 00:45 | 12h | 3,517 | 3,728 |
| 10 | May 6, 2021 12:45 | May 7, 2021 01:45 | 13h | 3,390 | 5,229 |
Outage episodes by size in 2021: 151 reached 100+ customers, 39 reached 1,000+ customers, 1 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 Durham 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 Progress - (NC) | 2021 | 3.1 hrs | 1.39 | 2.4 hrs | 1.34 |
| Duke Energy Carolinas, LLC | 2021 | 3.5 hrs | 1.20 | 2.5 hrs | 1.10 |
| Piedmont Electric Member Corp | 2021 | 10.5 hrs | 1.66 | 2.0 hrs | 1.03 |
| Wake Electric Membership Corp | 2021 | 1.6 hrs | 1.14 | 68 min | 0.79 |
| 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 ÷ 6,008 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. Durham County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Durham 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/durham-county