County annual report · FIPS 27133
2015 Rock County, MN Power Outage Report
In 2015, customers in Rock County, MN went without power for an average of 0.5 hours, a total of 2,236 customer-hours (Minnesota average 1.7 hours). That ranks 46th worst of 68 Minnesota counties and 2098th of 2,484 nationally.
Compared with MN, the US
Coverage line is EAGLE-I's share of Minnesota customers tracked each year.
Biggest outages in Rock County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 19, 2015 01:00 | June 19, 2015 15:15 | 14h 15m | 877 | 1,985 |
| 2 | December 22, 2015 20:15 | December 22, 2015 23:15 | 3h | 59 | 175 |
| 3 | August 17, 2015 14:30 | August 17, 2015 16:15 | 1h 45m | 14 | 25 |
| 4 | February 2, 2015 13:45 | February 2, 2015 15:30 | 1h 45m | 11 | 19 |
| 5 | August 10, 2015 01:00 | August 10, 2015 05:00 | 4h | 6 | 20 |
| 6 | June 10, 2015 15:00 | June 10, 2015 15:15 | 15m | 2 | 1 |
| 7 | January 6, 2015 19:15 | January 6, 2015 21:15 | 2h | 1 | 2 |
| 8 | March 12, 2015 13:00 | March 12, 2015 13:15 | 15m | 1 | 0 |
| 9 | June 20, 2015 02:30 | June 20, 2015 03:45 | 1h 15m | 1 | 1 |
| 10 | June 23, 2015 20:45 | June 23, 2015 21:15 | 30m | 1 | 1 |
Outage episodes by size in 2015: 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 2015, 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 | 2015 | 2.1 hrs | 0.88 | 82 min | 0.81 |
| Sioux Valley SW Elec Coop | 2015 | 2.0 hrs | 1.29 | 2.0 hrs | 1.29 |
| Nobles Cooperative Electric | 2015 | 3.3 hrs | 1.79 | 3.3 hrs | 1.79 |
| 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 2015; 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, 2015, 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/2015/minnesota/rock-county