County annual report · FIPS 27133
2025 Rock County, MN Power Outage Report
In 2025, customers in Rock County, MN went without power for an average of 1.6 hours, a total of 8,001 customer-hours (Minnesota average 3.7 hours). That ranks 57th worst of 85 Minnesota counties and 2567th of 3,000 nationally.
Compared with MN, the US and 2024
Coverage line is EAGLE-I's share of Minnesota customers tracked each year.
Biggest outages in Rock County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 15, 2025 19:15 | August 15, 2025 19:45 | 30m | 692 | 346 |
| 2 | September 18, 2025 14:15 | September 18, 2025 21:15 | 7h | 646 | 254 |
| 3 | June 11, 2025 19:15 | June 12, 2025 00:00 | 4h 45m | 621 | 1,135 |
| 4 | June 17, 2025 00:45 | June 17, 2025 02:30 | 1h 45m | 431 | 304 |
| 5 | July 30, 2025 14:15 | July 31, 2025 19:00 | 1d 4h | 342 | 784 |
| 6 | July 28, 2025 16:00 | July 28, 2025 16:45 | 45m | 339 | 176 |
| 7 | May 8, 2025 13:30 | May 9, 2025 19:45 | 1d 6h | 151 | 125 |
| 8 | February 27, 2025 18:15 | February 28, 2025 00:15 | 6h | 111 | 666 |
| 9 | February 1, 2025 22:00 | February 1, 2025 22:45 | 45m | 110 | 74 |
| 10 | January 22, 2025 20:30 | January 22, 2025 20:45 | 15m | 78 | 20 |
Outage episodes by size in 2025: 9 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 2025, 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 | 2024 | 2.6 hrs | 0.99 | 76 min | 0.80 |
| Sioux Valley SW Elec Coop | 2024 | 46 min | 0.92 | 46 min | 0.92 |
| 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 n/a of Minnesota's customers in 2025; 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, 2025, 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/2025/minnesota/rock-county