County annual report · FIPS 40069
2020 Johnston County, OK Power Outage Report
In 2020, customers in Johnston County, OK went without power for an average of 4.3 hours, a total of 30K customer-hours (Oklahoma average 27.7 hours). That ranks 51st worst of 77 Oklahoma counties and 1539th of 3,019 nationally.
Compared with OK, the US and 2019
Coverage line is EAGLE-I's share of Oklahoma 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 | March 29, 2020 14:45 | March 29, 2020 20:00 | 5h 15m | 1,134 | 4,334 |
| 2 | July 30, 2020 23:45 | July 31, 2020 22:30 | 22h 45m | 1,086 | 11K |
| 3 | November 25, 2020 16:45 | November 25, 2020 18:00 | 1h 15m | 523 | 168 |
| 4 | April 22, 2020 06:45 | April 22, 2020 21:15 | 14h 30m | 500 | 2,497 |
| 5 | March 19, 2020 10:15 | March 19, 2020 15:15 | 5h | 497 | 981 |
| 6 | April 22, 2020 22:15 | April 23, 2020 09:30 | 11h 15m | 471 | 1,018 |
| 7 | April 29, 2020 02:30 | April 29, 2020 06:30 | 4h | 423 | 415 |
| 8 | February 5, 2020 04:15 | February 5, 2020 07:15 | 3h | 354 | 498 |
| 9 | September 28, 2020 02:15 | September 28, 2020 05:45 | 3h 30m | 295 | 483 |
| 10 | September 9, 2020 00:00 | September 9, 2020 05:00 | 5h | 287 | 1,416 |
Outage episodes by size in 2020: 17 reached 100+ customers, 2 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 |
|---|---|---|---|---|---|
| Public Service Co of Oklahoma | 2020 | 4.4 hrs | 1.41 | 89 min | 1.03 |
| Southeastern Electric Coop Inc - (OK) | 2020 | 4.5 hrs | 1.66 | 2.5 hrs | 1.53 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| People's Electric Cooperative | - | - | - | - | - |
| Red River Valley Rrl Elec Assn | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 93% of Oklahoma's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,045 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, OK 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/oklahoma/johnston-county