County annual report · FIPS 40135
2018 Sequoyah County, OK Power Outage Report
In 2018, customers in Sequoyah County, OK went without power for an average of 1.3 hours, a total of 44K customer-hours (Oklahoma average 2.7 hours). That ranks 69th worst of 77 Oklahoma counties and 2190th of 2,798 nationally.
Compared with OK, the US and 2017
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Sequoyah County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 31, 2018 11:15 | July 31, 2018 14:30 | 3h 15m | 4,821 | 3,262 |
| 2 | December 1, 2018 03:45 | December 6, 2018 00:45 | 4d 21h | 4,207 | 23K |
| 3 | August 15, 2018 08:00 | August 15, 2018 11:45 | 3h 45m | 1,164 | 4,070 |
| 4 | October 23, 2018 13:30 | October 23, 2018 21:00 | 7h 30m | 862 | 868 |
| 5 | January 11, 2018 13:45 | January 11, 2018 16:45 | 3h | 716 | 193 |
| 6 | March 6, 2018 19:45 | March 6, 2018 22:00 | 2h 15m | 526 | 429 |
| 7 | June 10, 2018 14:45 | June 10, 2018 17:30 | 2h 45m | 422 | 558 |
| 8 | October 9, 2018 17:45 | October 9, 2018 19:45 | 2h | 422 | 432 |
| 9 | September 21, 2018 22:30 | September 22, 2018 05:15 | 6h 45m | 298 | 360 |
| 10 | December 8, 2018 20:30 | December 8, 2018 22:30 | 2h | 298 | 448 |
Outage episodes by size in 2018: 24 reached 100+ customers, 3 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 2018, 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 | 2018 | 3.4 hrs | 1.40 | 73 min | 0.52 |
| Ozarks Electric Coop Corp - (AR) | 2018 | 9.0 hrs | 1.91 | 59 min | 0.67 |
| Cookson Hills Elec Coop, Inc | 2018 | 2.9 hrs | 1.03 | 1.7 hrs | 0.96 |
| 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 89% of Oklahoma's customers in 2018; 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, 2018, 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/2018/oklahoma/sequoyah-county