County annual report · FIPS 40021
2018 Cherokee County, OK Power Outage Report
In 2018, customers in Cherokee County, OK went without power for an average of 4.8 hours, a total of 130K customer-hours (Oklahoma average 2.7 hours). That ranks 28th worst of 77 Oklahoma counties and 1089th 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 Cherokee 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 | December 1, 2018 04:00 | December 6, 2018 21:30 | 5d 17h | 3,480 | 99K |
| 2 | July 6, 2018 18:45 | July 7, 2018 03:00 | 8h 15m | 1,441 | 1,989 |
| 3 | July 10, 2018 14:00 | July 10, 2018 15:45 | 1h 45m | 961 | 723 |
| 4 | February 19, 2018 15:30 | February 19, 2018 19:15 | 3h 45m | 731 | 455 |
| 5 | August 1, 2018 14:45 | August 1, 2018 22:45 | 8h | 726 | 198 |
| 6 | August 30, 2018 22:00 | August 31, 2018 20:45 | 22h 45m | 693 | 4,624 |
| 7 | March 8, 2018 17:45 | March 9, 2018 15:15 | 21h 30m | 664 | 757 |
| 8 | June 24, 2018 09:45 | June 25, 2018 00:15 | 14h 30m | 646 | 816 |
| 9 | August 1, 2018 12:30 | August 1, 2018 12:45 | 15m | 536 | 134 |
| 10 | August 30, 2018 20:00 | August 30, 2018 20:30 | 30m | 536 | 268 |
Outage episodes by size in 2018: 31 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 Cherokee 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 |
|---|---|---|---|---|---|
| Public Service Co of Oklahoma | 2018 | 2.1 hrs | 1.34 | 1.7 hrs | 1.17 |
| 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 |
| Lake Region Electric Coop, Inc - (OK) | 2018 | 2.6 hrs | 1.31 | 2.2 hrs | 1.15 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| Northeast Oklahoma Electric Co | - | - | - | - | - |
| Tahlequah 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 89% of Oklahoma's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 27,388 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. Cherokee County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cherokee 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/cherokee-county