County annual report · FIPS 31149
2021 Rock County, NE Power Outage Report
In 2021, customers in Rock County, NE went without power for an average of 0.5 hours, a total of 687 customer-hours (Nebraska average 8.3 hours). That ranks 37th worst of 54 Nebraska counties and 2812th 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 Rock 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 16, 2021 15:00 | February 16, 2021 16:00 | 1h | 557 | 557 |
| 2 | June 24, 2021 02:45 | June 24, 2021 04:00 | 1h 15m | 56 | 70 |
| 3 | February 16, 2021 13:30 | February 16, 2021 14:15 | 45m | 54 | 27 |
| 4 | February 28, 2021 00:15 | February 28, 2021 03:00 | 2h 45m | 7 | 19 |
| 5 | March 30, 2021 18:15 | March 30, 2021 19:00 | 45m | 2 | 2 |
| 6 | May 20, 2021 21:45 | May 20, 2021 22:30 | 45m | 2 | 1 |
| 7 | June 2, 2021 16:00 | June 2, 2021 16:45 | 45m | 2 | 2 |
| 8 | June 9, 2021 14:45 | June 9, 2021 18:00 | 3h 15m | 2 | 7 |
| 9 | January 18, 2021 19:00 | January 18, 2021 19:15 | 15m | 1 | 0 |
| 10 | March 15, 2021 14:15 | March 15, 2021 15:15 | 1h | 1 | 1 |
Outage episodes by size in 2021: 1 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 Rock 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 |
| KBR Rural Public Power District | - | - | - | - | - |
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 ÷ 1,374 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. Rock County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Rock 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/rock-county