County annual report · FIPS 31025
2021 Cass County, NE Power Outage Report
In 2021, customers in Cass County, NE went without power for an average of 22.0 hours, a total of 273K customer-hours (Nebraska average 8.3 hours). That ranks 2nd worst of 54 Nebraska counties and 390th of 2,974 nationally.
Compared with NE, the US and 2020
Coverage line is EAGLE-I's share of Nebraska customers tracked each year.
Biggest outages in Cass 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 | December 15, 2021 18:30 | December 19, 2021 01:30 | 3d 7h | 6,971 | 120K |
| 2 | June 24, 2021 08:00 | June 25, 2021 08:30 | 1d | 4,878 | 24K |
| 3 | July 10, 2021 05:30 | July 13, 2021 17:15 | 3d 11h | 4,184 | 95K |
| 4 | September 13, 2021 16:45 | September 13, 2021 22:00 | 5h 15m | 2,026 | 1,523 |
| 5 | March 10, 2021 17:30 | March 11, 2021 09:15 | 15h 45m | 1,223 | 5,620 |
| 6 | February 21, 2021 12:30 | February 21, 2021 14:45 | 2h 15m | 1,212 | 1,516 |
| 7 | July 15, 2021 00:15 | July 16, 2021 02:30 | 1d 2h | 1,127 | 1,914 |
| 8 | August 31, 2021 07:30 | August 31, 2021 20:15 | 12h 45m | 964 | 877 |
| 9 | August 29, 2021 09:45 | August 29, 2021 15:00 | 5h 15m | 903 | 1,150 |
| 10 | June 11, 2021 15:00 | June 11, 2021 19:15 | 4h 15m | 898 | 693 |
Outage episodes by size in 2021: 28 reached 100+ customers, 7 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 Cass 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 |
|---|---|---|---|---|---|
| Nebraska Public Power District | 2021 | 4.0 hrs | 1.14 | 71 min | 0.66 |
| Omaha Public Power District | 2021 | 15.4 hrs | 1.40 | 68 min | 0.52 |
| Village of Greenwood - (NE) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 48% of Nebraska's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 12,382 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. Cass County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cass County, NE 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/nebraska/cass-county