County annual report · FIPS 40069
2015 Johnston County, OK Power Outage Report
In 2015, customers in Johnston County, OK went without power for an average of 6.7 hours, a total of 48K customer-hours (Oklahoma average 5.1 hours). That ranks 17th worst of 74 Oklahoma counties and 395th of 2,484 nationally.
Compared with OK, the US
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Johnston County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 10, 2015 10:00 | May 10, 2015 14:15 | 4h 15m | 3,069 | 2,887 |
| 2 | October 22, 2015 20:30 | October 23, 2015 06:00 | 9h 30m | 2,104 | 3,761 |
| 3 | June 19, 2015 12:15 | June 19, 2015 13:30 | 1h 15m | 1,978 | 1,484 |
| 4 | May 10, 2015 22:45 | May 11, 2015 12:00 | 13h 15m | 1,137 | 4,706 |
| 5 | April 27, 2015 04:00 | April 27, 2015 11:30 | 7h 30m | 414 | 2,985 |
| 6 | December 4, 2015 20:15 | December 4, 2015 21:00 | 45m | 383 | 97 |
| 7 | June 16, 2015 15:00 | June 16, 2015 20:15 | 5h 15m | 345 | 397 |
| 8 | April 13, 2015 18:00 | April 17, 2015 11:45 | 3d 17h | 296 | 26K |
| 9 | September 10, 2015 17:00 | September 10, 2015 18:30 | 1h 30m | 290 | 254 |
| 10 | December 27, 2015 13:30 | December 27, 2015 22:00 | 8h 30m | 224 | 1,023 |
Outage episodes by size in 2015: 16 reached 100+ customers, 4 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 2015, 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 | 2015 | 6.7 hrs | 1.58 | 1.9 hrs | 1.17 |
| Southeastern Electric Coop Inc - (OK) | 2015 | 9.6 hrs | 0.27 | - | - |
| 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 n/a of Oklahoma's customers in 2015; 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, 2015, 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/2015/oklahoma/johnston-county