County annual report · FIPS 37101
2020 Johnston County, NC Power Outage Report
In 2020, customers in Johnston County, NC went without power for an average of 24.7 hours, a total of 342K customer-hours (North Carolina average 20.3 hours). That ranks 32nd worst of 94 North Carolina counties and 349th of 3,019 nationally.
Compared with NC, the US and 2019
Coverage line is EAGLE-I's share of North Carolina customers tracked each year.
Biggest outages in Johnston County, 2020
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 3, 2020 12:30 | August 5, 2020 06:15 | 1d 17h | 8,228 | 52K |
| 2 | February 6, 2020 19:30 | February 9, 2020 01:45 | 2d 6h | 5,341 | 50K |
| 3 | May 19, 2020 12:30 | May 19, 2020 15:45 | 3h 15m | 4,593 | 5,802 |
| 4 | August 31, 2020 11:15 | September 2, 2020 09:00 | 1d 21h | 4,263 | 49K |
| 5 | July 28, 2020 19:30 | July 29, 2020 18:30 | 23h | 2,667 | 8,022 |
| 6 | August 15, 2020 23:45 | August 16, 2020 05:15 | 5h 30m | 2,646 | 2,741 |
| 7 | July 18, 2020 20:15 | July 19, 2020 06:30 | 10h 15m | 2,394 | 5,164 |
| 8 | May 6, 2020 06:00 | May 7, 2020 03:15 | 21h 15m | 2,196 | 6,563 |
| 9 | June 16, 2020 18:00 | June 17, 2020 15:45 | 21h 45m | 1,954 | 5,564 |
| 10 | February 20, 2020 22:30 | February 21, 2020 20:00 | 21h 30m | 1,829 | 5,524 |
Outage episodes by size in 2020: 134 reached 100+ customers, 22 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 Johnston County reported on EIA Form 861 for 2020, 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) | 2020 | 5.2 hrs | 1.81 | 2.3 hrs | 1.37 |
| City of Wilson - (NC) | 2020 | 74 min | 1.11 | 53 min | 0.88 |
| Tri-County Elec Member Corp (NC) | 2018 | 51.3 hrs | 2.31 | - | - |
| Wake Electric Membership Corp | 2020 | 2.6 hrs | 1.52 | 64 min | 0.92 |
| Duke Energy | - | - | - | - | - |
| South River Elec Member Corp | - | - | - | - | - |
| Town of Benson - (NC) | - | - | - | - | - |
| Town of Clayton - (NC) | - | - | - | - | - |
| Town of Selma - (NC) | - | - | - | - | - |
| Town of Smithfield - (NC) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 91% of North Carolina's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 13,828 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. Johnston County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Johnston County, NC annual power outage report, 2020, 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/2020/north-carolina/johnston-county