County annual report · FIPS 40135
2025 Sequoyah County, OK Power Outage Report
In 2025, customers in Sequoyah County, OK went without power for an average of 4.5 hours, a total of 150K customer-hours (Oklahoma average 4.9 hours). That ranks 54th worst of 77 Oklahoma counties and 1642nd of 3,000 nationally.
Compared with OK, the US and 2024
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Sequoyah County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 6, 2025 08:15 | June 7, 2025 07:15 | 23h | 5,822 | 49K |
| 2 | September 23, 2025 20:00 | September 24, 2025 08:15 | 12h 15m | 5,115 | 11K |
| 3 | February 10, 2025 15:45 | February 10, 2025 22:15 | 6h 30m | 4,219 | 4,042 |
| 4 | June 12, 2025 10:30 | June 12, 2025 17:30 | 7h | 4,121 | 4,123 |
| 5 | July 14, 2025 13:45 | July 14, 2025 18:30 | 4h 45m | 1,510 | 1,333 |
| 6 | September 21, 2025 21:30 | September 22, 2025 21:15 | 23h 45m | 1,467 | 3,141 |
| 7 | March 4, 2025 21:15 | March 5, 2025 07:00 | 9h 45m | 1,234 | 2,392 |
| 8 | April 29, 2025 14:15 | April 29, 2025 19:30 | 5h 15m | 1,232 | 1,374 |
| 9 | May 18, 2025 07:00 | May 23, 2025 23:15 | 5d 16h | 1,212 | 23K |
| 10 | July 16, 2025 13:45 | July 16, 2025 17:00 | 3h 15m | 1,205 | 1,373 |
Outage episodes by size in 2025: 56 reached 100+ customers, 12 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 Sequoyah County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Arkansas Valley Elec Coop Corp | 2024 | 6.5 hrs | 2.78 | 2.8 hrs | 1.94 |
| Ozarks Electric Coop Corp - (AR) | 2024 | 4.2 hrs | 1.78 | 76 min | 0.95 |
| Cookson Hills Elec Coop, Inc | 2024 | 6.7 hrs | 1.09 | 2.3 hrs | 0.81 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| City of Sallisaw - (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 n/a of Oklahoma's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 33,532 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. Sequoyah County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sequoyah County, OK annual power outage report, 2025, 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/2025/oklahoma/sequoyah-county