County annual report · FIPS 40059
2021 Harper County, OK Power Outage Report
In 2021, customers in Harper County, OK went without power for an average of 7.9 hours, a total of 16K customer-hours (Oklahoma average 3.2 hours). That ranks 7th worst of 77 Oklahoma counties and 949th of 2,974 nationally.
Compared with OK, the US and 2020
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Harper County, 2021
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 16, 2021 14:00 | February 16, 2021 15:30 | 1h 30m | 306 | 448 |
| 2 | September 18, 2021 00:00 | September 20, 2021 13:45 | 2d 13h | 298 | 2,803 |
| 3 | May 6, 2021 13:30 | May 6, 2021 17:45 | 4h 15m | 219 | 288 |
| 4 | February 10, 2021 04:30 | February 10, 2021 19:15 | 14h 45m | 212 | 1,085 |
| 5 | February 15, 2021 22:15 | February 15, 2021 23:30 | 1h 15m | 211 | 264 |
| 6 | December 15, 2021 19:15 | December 16, 2021 07:15 | 12h | 206 | 1,044 |
| 7 | March 8, 2021 15:30 | March 8, 2021 22:00 | 6h 30m | 173 | 753 |
| 8 | March 2, 2021 15:00 | March 2, 2021 20:15 | 5h 15m | 156 | 417 |
| 9 | December 17, 2021 03:00 | December 17, 2021 03:15 | 15m | 137 | 34 |
| 10 | June 14, 2021 17:30 | June 14, 2021 18:00 | 30m | 132 | 66 |
Outage episodes by size in 2021: 26 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 Harper County reported on EIA Form 861 for 2021, 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) | - | - | - | - | - |
| Town of Laverne - (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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,061 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. Harper County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Harper County, OK annual power outage report, 2021, 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/2021/oklahoma/harper-county