County annual report · FIPS 40045
2023 Ellis County, OK Power Outage Report
In 2023, customers in Ellis County, OK went without power for an average of 52.9 hours, a total of 132K customer-hours (Oklahoma average 14.1 hours). That ranks 1st worst of 77 Oklahoma counties and 96th 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 Ellis 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 | July 7, 2023 08:45 | July 10, 2023 17:15 | 3d 8h | 3,556 | 57K |
| 2 | June 18, 2023 01:15 | June 19, 2023 22:00 | 1d 20h | 2,903 | 35K |
| 3 | August 14, 2023 00:00 | August 16, 2023 00:00 | 2d | 2,375 | 23K |
| 4 | June 16, 2023 00:15 | June 16, 2023 15:15 | 15h | 908 | 7,878 |
| 5 | March 18, 2023 00:30 | March 18, 2023 06:15 | 5h 45m | 346 | 1,727 |
| 6 | January 30, 2023 13:30 | January 30, 2023 19:45 | 6h 15m | 343 | 761 |
| 7 | September 12, 2023 10:15 | September 12, 2023 16:15 | 6h | 233 | 1,233 |
| 8 | August 8, 2023 07:45 | August 8, 2023 18:15 | 10h 30m | 128 | 791 |
| 9 | February 8, 2023 20:30 | February 8, 2023 21:15 | 45m | 110 | 83 |
| 10 | August 7, 2023 10:45 | August 7, 2023 14:15 | 3h 30m | 92 | 209 |
Outage episodes by size in 2023: 9 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 Ellis 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 |
|---|---|---|---|---|---|
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| Northwestern Electric Coop Inc - (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 ÷ 2,488 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. Ellis County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ellis 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/). https://massoutage.com/reports/2023/oklahoma/ellis-county