County annual report · FIPS 40021
2015 Cherokee County, OK Power Outage Report
In 2015, customers in Cherokee County, OK went without power for an average of 3.0 hours, a total of 82K customer-hours (Oklahoma average 5.1 hours). That ranks 34th worst of 74 Oklahoma counties and 923rd of 2,484 nationally.
Compared with OK, the US
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Cherokee County, 2015
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 21, 2015 06:45 | July 21, 2015 17:30 | 10h 45m | 1,890 | 5,252 |
| 2 | July 13, 2015 21:45 | July 14, 2015 00:15 | 2h 30m | 1,828 | 2,501 |
| 3 | February 19, 2015 14:30 | February 19, 2015 16:30 | 2h | 1,587 | 399 |
| 4 | December 26, 2015 20:30 | December 31, 2015 00:15 | 4d 3h | 1,032 | 25K |
| 5 | July 22, 2015 19:30 | July 22, 2015 21:00 | 1h 30m | 759 | 247 |
| 6 | December 12, 2015 14:30 | December 14, 2015 16:45 | 2d 2h | 749 | 3,600 |
| 7 | November 29, 2015 13:45 | November 29, 2015 16:30 | 2h 45m | 707 | 1,593 |
| 8 | August 28, 2015 12:45 | August 28, 2015 17:15 | 4h 30m | 663 | 528 |
| 9 | September 25, 2015 22:30 | September 26, 2015 06:45 | 8h 15m | 656 | 2,547 |
| 10 | November 17, 2015 08:30 | November 17, 2015 11:15 | 2h 45m | 537 | 1,191 |
Outage episodes by size in 2015: 45 reached 100+ customers, 4 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 2015, 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 | 2015 | 6.7 hrs | 1.58 | 1.9 hrs | 1.17 |
| Ozarks Electric Coop Corp - (AR) | 2015 | 2.1 hrs | 1.68 | 49 min | 0.64 |
| Lake Region Electric Coop, Inc - (OK) | 2015 | 3.8 hrs | 1.48 | 3.5 hrs | 1.45 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| Cookson Hills Elec Coop, Inc | - | - | - | - | - |
| 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 n/a of Oklahoma's customers in 2015; 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, 2015, 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/2015/oklahoma/cherokee-county