County annual report · FIPS 40051
2020 Grady County, OK Power Outage Report
In 2020, customers in Grady County, OK went without power for an average of 42.7 hours, a total of 1.1M customer-hours (Oklahoma average 27.7 hours). That ranks 10th worst of 77 Oklahoma counties and 189th 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 Grady 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 24, 2020 18:30 | November 18, 2020 02:15 | 24d 7h | 17,833 | 994K |
| 2 | August 31, 2020 21:45 | September 2, 2020 01:30 | 1d 3h | 4,499 | 14K |
| 3 | October 12, 2020 17:30 | October 12, 2020 21:45 | 4h 15m | 4,063 | 1,038 |
| 4 | July 11, 2020 21:45 | July 13, 2020 00:15 | 1d 2h | 3,980 | 11K |
| 5 | October 15, 2020 12:45 | October 15, 2020 15:15 | 2h 30m | 3,147 | 829 |
| 6 | July 10, 2020 16:00 | July 11, 2020 00:15 | 8h 15m | 2,446 | 2,064 |
| 7 | July 3, 2020 07:45 | July 6, 2020 14:15 | 3d 6h | 2,339 | 4,526 |
| 8 | September 21, 2020 20:45 | September 21, 2020 22:30 | 1h 45m | 1,653 | 1,274 |
| 9 | May 6, 2020 20:00 | May 6, 2020 21:15 | 1h 15m | 1,549 | 1,412 |
| 10 | April 13, 2020 20:00 | April 13, 2020 21:30 | 1h 30m | 1,440 | 750 |
Outage episodes by size in 2020: 51 reached 100+ customers, 13 reached 1,000+ customers, 1 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 Grady 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 |
|---|---|---|---|---|---|
| Public Service Co of Oklahoma | 2020 | 4.4 hrs | 1.41 | 89 min | 1.03 |
| Cotton Electric Coop, Inc | 2020 | 10.1 hrs | 3.38 | 3.7 hrs | 2.04 |
| Oklahoma Electric Coop Inc | 2020 | 23.7 hrs | 3.08 | 69 min | 1.40 |
| Rural Electric Coop, Inc - (OK) | 2020 | 15.8 hrs | 3.49 | 2.8 hrs | 1.64 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| CKenergy Electric Cooperative | - | - | - | - | - |
| City of Marlow - (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 ÷ 24,938 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. Grady County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grady 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2020/oklahoma/grady-county