County annual report · FIPS 40045
2020 Ellis County, OK Power Outage Report
In 2020, customers in Ellis County, OK went without power for an average of 25.6 hours, a total of 64K customer-hours (Oklahoma average 27.7 hours). That ranks 15th worst of 77 Oklahoma counties and 327th of 3,019 nationally.
Compared with OK, the US and 2019
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Ellis County, 2020
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 28, 2020 07:00 | October 30, 2020 23:00 | 2d 16h | 2,672 | 48K |
| 2 | November 30, 2020 22:45 | November 30, 2020 23:00 | 15m | 1,040 | 260 |
| 3 | July 12, 2020 01:15 | July 12, 2020 08:30 | 7h 15m | 660 | 2,990 |
| 4 | July 16, 2020 08:45 | July 16, 2020 15:15 | 6h 30m | 571 | 1,748 |
| 5 | January 14, 2020 20:45 | January 14, 2020 21:15 | 30m | 349 | 175 |
| 6 | July 28, 2020 12:30 | July 28, 2020 14:00 | 1h 30m | 294 | 427 |
| 7 | August 11, 2020 02:00 | August 11, 2020 04:15 | 2h 15m | 280 | 372 |
| 8 | March 20, 2020 05:00 | March 20, 2020 09:00 | 4h | 254 | 954 |
| 9 | January 17, 2020 13:15 | January 17, 2020 20:15 | 7h | 236 | 402 |
| 10 | July 13, 2020 04:00 | July 13, 2020 14:15 | 10h 15m | 199 | 472 |
Outage episodes by size in 2020: 20 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 Ellis County reported on EIA Form 861 for 2020, 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 93% of Oklahoma's customers in 2020; 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, 2020, 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/2020/oklahoma/ellis-county