County annual report · FIPS 40143
2018 Tulsa County, OK Power Outage Report
In 2018, customers in Tulsa County, OK went without power for an average of 1.7 hours, a total of 518K customer-hours (Oklahoma average 2.7 hours). That ranks 62nd worst of 77 Oklahoma counties and 2002nd 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 Tulsa 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 | June 28, 2018 11:15 | June 28, 2018 22:15 | 11h | 20,088 | 13K |
| 2 | August 16, 2018 05:00 | August 18, 2018 05:30 | 2d | 19,645 | 51K |
| 3 | June 24, 2018 07:00 | June 25, 2018 04:00 | 21h | 17,748 | 35K |
| 4 | May 29, 2018 13:15 | May 31, 2018 06:30 | 1d 17h | 9,338 | 25K |
| 5 | July 30, 2018 09:00 | August 1, 2018 02:00 | 1d 17h | 8,321 | 16K |
| 6 | May 31, 2018 08:00 | June 1, 2018 00:00 | 16h | 6,453 | 11K |
| 7 | August 7, 2018 11:45 | August 9, 2018 03:45 | 1d 16h | 6,432 | 28K |
| 8 | November 29, 2018 09:30 | November 30, 2018 02:45 | 17h 15m | 5,667 | 2,053 |
| 9 | February 14, 2018 13:30 | February 15, 2018 01:00 | 11h 30m | 5,560 | 6,156 |
| 10 | November 12, 2018 09:45 | November 13, 2018 08:30 | 22h 45m | 5,553 | 9,534 |
Outage episodes by size in 2018: 192 reached 100+ customers, 63 reached 1,000+ customers, 3 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 Tulsa 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 |
| East Central Oklahoma Elec Coop Inc | 2018 | 3.4 hrs | 1.46 | 3.4 hrs | 1.46 |
| Indian Electric Coop, Inc | 2018 | 2.6 hrs | 0.91 | 2.0 hrs | 0.84 |
| Verdigris Valley Elec Coop Inc | 2013 | 7.1 hrs | 2.35 | 5.0 hrs | 1.98 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| City of Skiatook - (OK) | - | - | - | - | - |
| City of Collinsville - (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 ÷ 307,617 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. Tulsa County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Tulsa 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/tulsa-county