County annual report · FIPS 27133
2018 Rock County, MN Power Outage Report
In 2018, customers in Rock County, MN went without power for an average of 5.5 hours, a total of 27K customer-hours (Minnesota average 2.0 hours). That ranks 10th worst of 69 Minnesota counties and 976th of 2,798 nationally.
Compared with MN, the US and 2017
Coverage line is EAGLE-I's share of Minnesota customers tracked each year.
Biggest outages in Rock County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 13, 2018 12:30 | April 16, 2018 02:00 | 2d 13h | 1,368 | 12K |
| 2 | June 9, 2018 00:45 | June 9, 2018 02:00 | 1h 15m | 974 | 666 |
| 3 | March 17, 2018 21:45 | March 17, 2018 23:15 | 1h 30m | 947 | 1,187 |
| 4 | October 3, 2018 00:45 | November 7, 2018 20:45 | 35d 20h | 945 | 1,484 |
| 5 | May 3, 2018 17:00 | May 4, 2018 12:45 | 19h 45m | 817 | 2,330 |
| 6 | July 28, 2018 11:00 | July 28, 2018 21:00 | 10h | 286 | 2,860 |
| 7 | August 2, 2018 11:15 | August 2, 2018 11:30 | 15m | 286 | 72 |
| 8 | April 16, 2018 02:45 | April 23, 2018 19:45 | 7d 17h | 177 | 318 |
| 9 | December 2, 2018 16:15 | December 2, 2018 17:15 | 1h | 105 | 27 |
| 10 | June 12, 2018 12:00 | June 12, 2018 15:30 | 3h 30m | 68 | 173 |
Outage episodes by size in 2018: 9 reached 100+ customers, 1 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 2018, 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 |
|---|---|---|---|---|---|
| Northern States Power Co - Minnesota | 2018 | 90 min | 0.73 | 69 min | 0.62 |
| Sioux Valley SW Elec Coop | 2018 | 4.0 hrs | 3.62 | 2.0 hrs | 2.88 |
| Nobles Cooperative Electric | 2018 | 4.0 hrs | 1.09 | 4.0 hrs | 1.09 |
| City of Luverne - (MN) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 71% of Minnesota's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,958 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, MN annual power outage report, 2018, 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/2018/minnesota/rock-county