County annual report · FIPS 40033
2021 Cotton County, OK Power Outage Report
In 2021, customers in Cotton County, OK went without power for an average of 3.7 hours, a total of 8,630 customer-hours (Oklahoma average 3.2 hours). That ranks 37th worst of 77 Oklahoma counties and 1634th 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 Cotton 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 16, 2021 20:15 | September 16, 2021 21:45 | 1h 30m | 1,138 | 1,437 |
| 2 | March 10, 2021 18:45 | March 10, 2021 21:30 | 2h 45m | 506 | 682 |
| 3 | January 25, 2021 07:15 | January 25, 2021 11:00 | 3h 45m | 321 | 931 |
| 4 | October 11, 2021 00:15 | October 13, 2021 13:00 | 2d 12h | 257 | 1,854 |
| 5 | February 16, 2021 10:45 | February 16, 2021 19:30 | 8h 45m | 222 | 668 |
| 6 | June 21, 2021 17:30 | June 21, 2021 20:15 | 2h 45m | 175 | 98 |
| 7 | February 15, 2021 17:00 | February 15, 2021 21:15 | 4h 15m | 162 | 157 |
| 8 | January 1, 2021 13:45 | January 1, 2021 16:15 | 2h 30m | 153 | 170 |
| 9 | July 26, 2021 21:15 | July 27, 2021 00:15 | 3h | 148 | 432 |
| 10 | October 27, 2021 04:15 | October 27, 2021 07:45 | 3h 30m | 126 | 142 |
Outage episodes by size in 2021: 11 reached 100+ customers, 1 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 Cotton 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 |
| Walters Public Works Authority | - | - | - | - | - |
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 ÷ 2,361 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. Cotton County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cotton 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/cotton-county