County annual report · FIPS 40141
2019 Tillman County, OK Power Outage Report
In 2019, customers in Tillman County, OK went without power for an average of 4.9 hours, a total of 16K customer-hours (Oklahoma average 5.0 hours). That ranks 37th worst of 77 Oklahoma counties and 1110th of 2,945 nationally.
Compared with OK, the US and 2018
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Tillman County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 18, 2019 01:15 | August 18, 2019 18:15 | 17h | 838 | 2,320 |
| 2 | April 13, 2019 20:30 | April 14, 2019 01:30 | 5h | 602 | 2,402 |
| 3 | November 7, 2019 12:00 | November 7, 2019 14:45 | 2h 45m | 596 | 1,492 |
| 4 | July 9, 2019 03:45 | July 9, 2019 07:45 | 4h | 594 | 2,376 |
| 5 | September 17, 2019 18:00 | September 17, 2019 22:30 | 4h 30m | 268 | 1,152 |
| 6 | May 2, 2019 11:30 | May 2, 2019 14:45 | 3h 15m | 247 | 720 |
| 7 | June 8, 2019 17:15 | June 8, 2019 20:30 | 3h 15m | 241 | 666 |
| 8 | July 2, 2019 22:45 | July 3, 2019 01:45 | 3h | 201 | 429 |
| 9 | October 13, 2019 18:30 | October 13, 2019 21:00 | 2h 30m | 201 | 401 |
| 10 | February 12, 2019 16:30 | February 12, 2019 17:00 | 30m | 199 | 61 |
Outage episodes by size in 2019: 13 reached 100+ customers, 0 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 2019, 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 |
| Cotton Electric Coop, Inc | 2018 | 3.6 hrs | 1.91 | 3.3 hrs | 1.84 |
| 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 90% of Oklahoma's customers in 2019; 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, 2019, 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/2019/oklahoma/tillman-county