County annual report · FIPS 40143
2015 Tulsa County, OK Power Outage Report
In 2015, customers in Tulsa County, OK went without power for an average of 3.1 hours, a total of 960K customer-hours (Oklahoma average 5.1 hours). That ranks 33rd worst of 74 Oklahoma counties and 877th 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 Tulsa 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 | March 25, 2015 20:45 | April 2, 2015 09:45 | 7d 13h | 33,854 | 415K |
| 2 | May 16, 2015 13:30 | May 19, 2015 02:00 | 2d 12h | 16,083 | 83K |
| 3 | July 16, 2015 12:45 | July 16, 2015 20:00 | 7h 15m | 9,796 | 9,802 |
| 4 | October 6, 2015 17:00 | October 7, 2015 01:45 | 8h 45m | 8,714 | 7,932 |
| 5 | December 24, 2015 13:00 | December 31, 2015 00:15 | 6d 11h | 7,220 | 49K |
| 6 | May 6, 2015 04:15 | May 7, 2015 22:30 | 1d 18h | 5,825 | 31K |
| 7 | May 8, 2015 17:15 | May 12, 2015 02:15 | 3d 9h | 5,663 | 26K |
| 8 | November 26, 2015 18:15 | November 29, 2015 03:00 | 2d 8h | 5,437 | 24K |
| 9 | June 13, 2015 00:15 | June 15, 2015 14:30 | 2d 14h | 4,336 | 10K |
| 10 | May 2, 2015 04:30 | May 4, 2015 22:00 | 2d 17h | 3,721 | 3,530 |
Outage episodes by size in 2015: 162 reached 100+ customers, 61 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 Tulsa 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 |
| East Central Oklahoma Elec Coop Inc | 2015 | 3.7 hrs | 1.73 | 3.7 hrs | 1.73 |
| Verdigris Valley Elec Coop Inc | 2013 | 7.1 hrs | 2.35 | 5.0 hrs | 1.98 |
| Oklahoma Gas & Electric Co | - | - | - | - | - |
| Indian Electric Coop, Inc | - | - | - | - | - |
| 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 n/a of Oklahoma's customers in 2015; 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, 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/tulsa-county