County annual report · FIPS 40039
2018 Custer County, OK Power Outage Report
In 2018, customers in Custer County, OK went without power for an average of 10.1 hours, a total of 155K customer-hours (Oklahoma average 2.7 hours). That ranks 9th worst of 77 Oklahoma counties and 542nd of 2,798 nationally.
Compared with OK, the US and 2017
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Custer County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 3, 2018 18:15 | April 4, 2018 03:15 | 9h | 11,114 | 8,522 |
| 2 | February 21, 2018 12:00 | February 21, 2018 16:15 | 4h 15m | 10,229 | 33K |
| 3 | May 30, 2018 19:15 | May 30, 2018 22:00 | 2h 45m | 5,488 | 6,693 |
| 4 | September 21, 2018 01:30 | September 21, 2018 14:45 | 13h 15m | 4,272 | 3,399 |
| 5 | November 12, 2018 10:15 | November 13, 2018 04:15 | 18h | 3,023 | 11K |
| 6 | May 14, 2018 04:45 | May 14, 2018 17:30 | 12h 45m | 2,197 | 7,044 |
| 7 | July 30, 2018 07:30 | July 30, 2018 12:00 | 4h 30m | 2,162 | 4,330 |
| 8 | June 14, 2018 00:15 | June 14, 2018 05:30 | 5h 15m | 2,032 | 3,475 |
| 9 | July 21, 2018 23:45 | July 22, 2018 01:45 | 2h | 2,003 | 2,365 |
| 10 | June 23, 2018 02:45 | June 23, 2018 19:45 | 17h | 1,928 | 3,729 |
Outage episodes by size in 2018: 56 reached 100+ customers, 21 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 Custer County reported on EIA Form 861 for 2018, 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 | 2018 | 2.1 hrs | 1.34 | 1.7 hrs | 1.17 |
| Cimarron Electric Coop | 2018 | 2.4 hrs | 1.10 | 59 min | 0.67 |
| Northfork Electric Coop, Inc | 2018 | 3.7 hrs | - | 2.7 hrs | - |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| CKenergy Electric Cooperative | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 89% of Oklahoma's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 15,341 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. Custer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Custer County, OK annual power outage report, 2018, 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/2018/oklahoma/custer-county