County annual report · FIPS 40141
2017 Tillman County, OK Power Outage Report
In 2017, customers in Tillman County, OK went without power for an average of 12.7 hours, a total of 42K customer-hours (Oklahoma average 3.2 hours). That ranks 10th worst of 77 Oklahoma counties and 423rd of 2,786 nationally.
Compared with OK, the US and 2016
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Tillman County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 18, 2017 04:00 | February 18, 2017 12:30 | 8h 30m | 2,128 | 17K |
| 2 | May 24, 2017 16:15 | May 24, 2017 16:30 | 15m | 2,026 | 507 |
| 3 | May 23, 2017 02:15 | May 23, 2017 10:30 | 8h 15m | 1,196 | 4,408 |
| 4 | July 1, 2017 00:45 | July 1, 2017 07:15 | 6h 30m | 926 | 3,891 |
| 5 | July 4, 2017 03:00 | July 4, 2017 09:30 | 6h 30m | 773 | 1,632 |
| 6 | May 18, 2017 22:15 | May 19, 2017 04:45 | 6h 30m | 679 | 2,897 |
| 7 | March 29, 2017 04:30 | March 29, 2017 10:15 | 5h 45m | 603 | 1,516 |
| 8 | September 18, 2017 05:15 | September 18, 2017 15:45 | 10h 30m | 388 | 3,650 |
| 9 | September 30, 2017 14:30 | September 30, 2017 17:00 | 2h 30m | 380 | 105 |
| 10 | September 19, 2017 20:45 | September 19, 2017 22:00 | 1h 15m | 376 | 325 |
Outage episodes by size in 2017: 23 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 Tillman County reported on EIA Form 861 for 2017, 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 | 2017 | 3.0 hrs | 1.33 | 1.7 hrs | 1.08 |
| Cotton Electric Coop, Inc | 2017 | 5.4 hrs | 2.46 | 4.5 hrs | 2.20 |
| Southwest Rural Elec Assn Inc | - | - | - | - | - |
| City of Frederick - (OK) | - | - | - | - | - |
| City of Manitou - (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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,295 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. Tillman County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Tillman County, OK annual power outage report, 2017, 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/2017/oklahoma/tillman-county