County annual report · FIPS 40051
2015 Grady County, OK Power Outage Report
In 2015, customers in Grady County, OK went without power for an average of 40.1 hours, a total of 1.0M customer-hours (Oklahoma average 5.1 hours). That ranks 6th worst of 74 Oklahoma counties and 60th of 2,484 nationally.
Compared with OK, the US
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Grady County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 27, 2015 10:15 | December 31, 2015 00:15 | 3d 14h | 18,145 | 682K |
| 2 | November 28, 2015 00:45 | December 9, 2015 21:15 | 11d 20h | 16,091 | 232K |
| 3 | July 15, 2015 03:15 | July 15, 2015 08:00 | 4h 45m | 3,078 | 14K |
| 4 | December 26, 2015 16:00 | December 27, 2015 08:15 | 16h 15m | 2,942 | 3,278 |
| 5 | April 15, 2015 14:00 | April 15, 2015 18:45 | 4h 45m | 2,675 | 11K |
| 6 | July 4, 2015 22:15 | July 5, 2015 02:45 | 4h 30m | 2,242 | 4,590 |
| 7 | May 3, 2015 19:15 | May 3, 2015 20:00 | 45m | 2,078 | 521 |
| 8 | July 31, 2015 22:15 | August 1, 2015 00:30 | 2h 15m | 2,072 | 1,145 |
| 9 | November 19, 2015 05:15 | November 19, 2015 07:00 | 1h 45m | 1,926 | 1,553 |
| 10 | December 12, 2015 03:00 | December 12, 2015 09:15 | 6h 15m | 1,923 | 3,368 |
Outage episodes by size in 2015: 57 reached 100+ customers, 19 reached 1,000+ customers, 2 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 2015, 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 | 2015 | 6.7 hrs | 1.58 | 1.9 hrs | 1.17 |
| Cotton Electric Coop, Inc | 2015 | 18.2 hrs | 3.18 | 3.3 hrs | 1.92 |
| Oklahoma Electric Coop Inc | 2015 | 15.7 hrs | 4.30 | 2.3 hrs | 2.10 |
| Rural Electric Coop, Inc - (OK) | 2015 | 5.9 hrs | 2.63 | 3.4 hrs | 2.59 |
| 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 n/a of Oklahoma's customers in 2015; 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, 2015, 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/2015/oklahoma/grady-county