County annual report · FIPS 40143
2021 Tulsa County, OK Power Outage Report
In 2021, customers in Tulsa County, OK went without power for an average of 2.3 hours, a total of 714K customer-hours (Oklahoma average 3.2 hours). That ranks 60th worst of 77 Oklahoma counties and 2106th of 2,974 nationally.
Compared with OK, the US and 2020
Coverage line is EAGLE-I's share of Oklahoma customers tracked each year.
Biggest outages in Tulsa County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 13, 2021 00:00 | February 17, 2021 10:00 | 4d 10h | 32,506 | 126K |
| 2 | February 10, 2021 12:30 | February 11, 2021 05:00 | 16h 30m | 10,276 | 11K |
| 3 | November 10, 2021 14:45 | November 13, 2021 03:30 | 2d 12h | 7,760 | 49K |
| 4 | May 27, 2021 10:00 | May 29, 2021 01:45 | 1d 15h | 6,586 | 13K |
| 5 | October 8, 2021 12:15 | October 18, 2021 09:15 | 9d 21h | 5,957 | 27K |
| 6 | July 13, 2021 05:45 | July 14, 2021 02:00 | 20h 15m | 5,933 | 4,572 |
| 7 | September 22, 2021 13:15 | September 23, 2021 04:45 | 15h 30m | 5,859 | 2,485 |
| 8 | December 6, 2021 03:00 | December 31, 2021 00:15 | 24d 21h | 5,318 | 58K |
| 9 | April 12, 2021 12:30 | April 13, 2021 00:00 | 11h 30m | 5,132 | 4,504 |
| 10 | August 13, 2021 12:15 | August 15, 2021 02:45 | 1d 14h | 5,090 | 25K |
Outage episodes by size in 2021: 175 reached 100+ customers, 64 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 2021, 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 | 2021 | 2.3 hrs | 1.39 | 1.9 hrs | 1.21 |
| East Central Oklahoma Elec Coop Inc | 2021 | 3.3 hrs | 1.73 | 3.3 hrs | 1.73 |
| Indian Electric Coop, Inc | 2021 | 72 min | 0.66 | 72 min | 0.66 |
| 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 93% of Oklahoma's customers in 2021; 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, 2021, 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/2021/oklahoma/tulsa-county