County annual report · FIPS 31163
2021 Sherman County, NE Power Outage Report
In 2021, customers in Sherman County, NE went without power for an average of 0.9 hours, a total of 2,061 customer-hours (Nebraska average 8.3 hours). That ranks 29th worst of 54 Nebraska counties and 2714th 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 Sherman 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 | May 12, 2021 06:15 | May 12, 2021 07:00 | 45m | 468 | 296 |
| 2 | May 11, 2021 16:30 | May 11, 2021 16:45 | 15m | 248 | 62 |
| 3 | May 9, 2021 14:00 | May 10, 2021 08:30 | 18h 30m | 242 | 504 |
| 4 | November 21, 2021 13:15 | November 21, 2021 17:45 | 4h 30m | 123 | 554 |
| 5 | August 15, 2021 10:30 | August 15, 2021 11:30 | 1h | 43 | 43 |
| 6 | October 5, 2021 04:45 | October 5, 2021 06:00 | 1h 15m | 38 | 46 |
| 7 | April 29, 2021 13:45 | April 29, 2021 20:00 | 6h 15m | 34 | 213 |
| 8 | May 4, 2021 21:30 | May 5, 2021 01:45 | 4h 15m | 17 | 24 |
| 9 | July 25, 2021 18:15 | July 25, 2021 20:45 | 2h 30m | 17 | 43 |
| 10 | September 4, 2021 20:30 | September 4, 2021 22:30 | 2h | 12 | 24 |
Outage episodes by size in 2021: 4 reached 100+ customers, 0 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 Sherman 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 |
| Custer Public Power District | - | - | - | - | - |
| Dawson Power District | - | - | - | - | - |
| Loup Valleys Rural P P D | - | - | - | - | - |
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 ÷ 2,413 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. Sherman County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Sherman 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/sherman-county