County annual report · FIPS 40043
2018 Dewey County, OK Power Outage Report
In 2018, customers in Dewey County, OK went without power for an average of 73.3 hours, a total of 192K customer-hours (Oklahoma average 2.7 hours). That ranks 1st worst of 77 Oklahoma counties and 87th 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 Dewey 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 13, 2018 03:45 | April 24, 2018 23:30 | 11d 19h | 2,281 | 135K |
| 2 | June 25, 2018 05:30 | June 26, 2018 16:00 | 1d 10h | 1,872 | 22K |
| 3 | May 19, 2018 04:00 | May 19, 2018 07:45 | 3h 45m | 1,343 | 2,522 |
| 4 | May 29, 2018 07:15 | May 29, 2018 23:00 | 15h 45m | 1,265 | 6,877 |
| 5 | June 23, 2018 02:30 | June 23, 2018 10:45 | 8h 15m | 1,106 | 3,816 |
| 6 | May 31, 2018 04:30 | May 31, 2018 17:45 | 13h 15m | 813 | 4,028 |
| 7 | June 13, 2018 06:15 | June 13, 2018 10:00 | 3h 45m | 632 | 1,579 |
| 8 | May 16, 2018 07:45 | May 16, 2018 13:30 | 5h 45m | 602 | 2,106 |
| 9 | November 12, 2018 09:45 | November 12, 2018 22:30 | 12h 45m | 467 | 2,068 |
| 10 | October 11, 2018 08:30 | October 11, 2018 10:15 | 1h 45m | 414 | 569 |
Outage episodes by size in 2018: 30 reached 100+ customers, 5 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 Dewey 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 | - | - | - | - | - |
| Northwestern Electric Coop Inc - (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 89% of Oklahoma's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,623 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. Dewey County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dewey 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/dewey-county