County annual report · FIPS 40137
2021 Stephens County, OK Power Outage Report
In 2021, customers in Stephens County, OK went without power for an average of 1.2 hours, a total of 31K customer-hours (Oklahoma average 3.2 hours). That ranks 68th worst of 77 Oklahoma counties and 2584th 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 Stephens 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 | February 16, 2021 11:45 | February 16, 2021 17:30 | 5h 45m | 2,265 | 2,993 |
| 2 | June 12, 2021 08:30 | June 13, 2021 04:30 | 20h | 1,474 | 5,020 |
| 3 | March 18, 2021 08:45 | March 18, 2021 12:45 | 4h | 983 | 2,055 |
| 4 | May 27, 2021 18:30 | May 27, 2021 19:45 | 1h 15m | 869 | 869 |
| 5 | October 11, 2021 00:00 | October 11, 2021 09:15 | 9h 15m | 862 | 429 |
| 6 | May 28, 2021 02:00 | May 28, 2021 08:15 | 6h 15m | 537 | 2,424 |
| 7 | February 15, 2021 17:30 | February 15, 2021 23:45 | 6h 15m | 520 | 518 |
| 8 | October 28, 2021 15:15 | October 29, 2021 01:00 | 9h 45m | 459 | 972 |
| 9 | January 6, 2021 01:15 | January 6, 2021 02:00 | 45m | 445 | 334 |
| 10 | September 15, 2021 12:45 | September 15, 2021 14:00 | 1h 15m | 435 | 544 |
Outage episodes by size in 2021: 30 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 Stephens 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 |
| Rural Electric Coop, Inc - (OK) | 2021 | 5.2 hrs | 2.89 | 3.9 hrs | 2.24 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| City of Marlow - (OK) | - | - | - | - | - |
| City of Comanche - (OK) | - | - | - | - | - |
| City of Duncan - (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 ÷ 25,647 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. Stephens County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Stephens 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/stephens-county