County annual report · FIPS 40067
2021 Jefferson County, OK Power Outage Report
In 2021, customers in Jefferson County, OK went without power for an average of 4.1 hours, a total of 9,942 customer-hours (Oklahoma average 3.2 hours). That ranks 31st worst of 77 Oklahoma counties and 1510th of 2,974 nationally.
Compared with OK, the US and 2020
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Jefferson 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 | September 30, 2021 16:00 | October 1, 2021 01:45 | 9h 45m | 433 | 165 |
| 2 | June 27, 2021 01:45 | June 27, 2021 06:45 | 5h | 402 | 358 |
| 3 | July 16, 2021 12:00 | July 16, 2021 14:45 | 2h 45m | 367 | 463 |
| 4 | February 16, 2021 11:00 | February 16, 2021 15:30 | 4h 30m | 348 | 643 |
| 5 | December 17, 2021 22:45 | December 18, 2021 06:45 | 8h | 343 | 1,631 |
| 6 | August 3, 2021 14:15 | August 3, 2021 15:45 | 1h 30m | 269 | 270 |
| 7 | April 13, 2021 09:00 | April 13, 2021 12:30 | 3h 30m | 263 | 448 |
| 8 | February 15, 2021 18:30 | February 15, 2021 19:30 | 1h | 239 | 239 |
| 9 | July 26, 2021 02:00 | July 26, 2021 06:30 | 4h 30m | 236 | 669 |
| 10 | October 14, 2021 09:15 | October 14, 2021 10:45 | 1h 30m | 184 | 276 |
Outage episodes by size in 2021: 18 reached 100+ customers, 0 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 Jefferson 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 |
|---|---|---|---|---|---|
| Public Service Co of Oklahoma | 2021 | 2.3 hrs | 1.39 | 1.9 hrs | 1.21 |
| Cotton Electric Coop, Inc | 2021 | 3.5 hrs | 2.32 | 2.8 hrs | 1.79 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| Red River Valley Rrl Elec Assn | - | - | - | - | - |
| Town of Ryan - (OK) | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,420 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, OK 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/oklahoma/jefferson-county