County annual report · FIPS 40141
2023 Tillman County, OK Power Outage Report
In 2023, customers in Tillman County, OK went without power for an average of 11.3 hours, a total of 37K customer-hours (Oklahoma average 14.1 hours). That ranks 29th worst of 77 Oklahoma counties and 757th of 2,977 nationally.
Compared with OK, the US and 2022
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Tillman County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 4, 2023 20:30 | October 12, 2023 19:30 | 7d 23h | 1,175 | 4,532 |
| 2 | February 27, 2023 02:45 | February 28, 2023 03:45 | 1d 1h | 1,009 | 8,731 |
| 3 | September 14, 2023 22:30 | September 14, 2023 22:45 | 15m | 855 | 214 |
| 4 | September 15, 2023 17:45 | September 15, 2023 18:00 | 15m | 855 | 214 |
| 5 | June 15, 2023 23:00 | June 16, 2023 08:15 | 9h 15m | 615 | 1,694 |
| 6 | September 12, 2023 00:45 | September 12, 2023 05:00 | 4h 15m | 615 | 2,595 |
| 7 | August 17, 2023 18:00 | August 17, 2023 22:00 | 4h | 612 | 2,296 |
| 8 | February 4, 2023 15:30 | February 4, 2023 17:00 | 1h 30m | 611 | 765 |
| 9 | February 26, 2023 17:15 | February 26, 2023 20:30 | 3h 15m | 609 | 1,826 |
| 10 | February 4, 2023 03:00 | February 4, 2023 03:30 | 30m | 607 | 304 |
Outage episodes by size in 2023: 27 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 Tillman County reported on EIA Form 861 for 2023, 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 | 2023 | 34.0 hrs | 1.98 | 1.8 hrs | 1.10 |
| Cotton Electric Coop, Inc | 2023 | 8.9 hrs | 4.02 | 3.8 hrs | 2.32 |
| 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 2023; 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, 2023, 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/2023/oklahoma/tillman-county