County annual report · FIPS 40055
2021 Greer County, OK Power Outage Report
In 2021, customers in Greer County, OK went without power for an average of 0.4 hours, a total of 1,519 customer-hours (Oklahoma average 3.2 hours). That ranks 77th worst of 77 Oklahoma counties and 2837th 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 Greer 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 16:30 | February 16, 2021 19:15 | 2h 45m | 121 | 329 |
| 2 | January 15, 2021 20:45 | January 15, 2021 21:30 | 45m | 119 | 89 |
| 3 | June 11, 2021 02:30 | June 11, 2021 03:45 | 1h 15m | 119 | 91 |
| 4 | June 30, 2021 18:00 | June 30, 2021 19:30 | 1h 30m | 119 | 179 |
| 5 | July 9, 2021 03:45 | July 9, 2021 04:15 | 30m | 119 | 60 |
| 6 | May 25, 2021 00:00 | May 25, 2021 01:00 | 1h | 88 | 75 |
| 7 | December 5, 2021 19:45 | December 5, 2021 20:45 | 1h | 88 | 60 |
| 8 | March 16, 2021 21:15 | March 17, 2021 14:00 | 16h 45m | 54 | 88 |
| 9 | April 24, 2021 15:30 | April 24, 2021 17:30 | 2h | 51 | 89 |
| 10 | August 31, 2021 22:45 | August 31, 2021 23:45 | 1h | 51 | 51 |
Outage episodes by size in 2021: 5 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 Greer 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 |
|---|---|---|---|---|---|
| Public Service Co of Oklahoma | 2021 | 2.3 hrs | 1.39 | 1.9 hrs | 1.21 |
| Northfork Electric Coop, Inc | 2018 | 3.7 hrs | - | 2.7 hrs | - |
| Southwest Rural Elec Assn Inc | - | - | - | - | - |
| Harmon Electric Assn Inc | - | - | - | - | - |
| City of Granite - (OK) | - | - | - | - | - |
| City of Mangum - (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 ÷ 3,967 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. Greer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Greer 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/oklahoma/greer-county