County annual report · FIPS 38017
2015 Cass County, ND Power Outage Report
In 2015, customers in Cass County, ND went without power for an average of 0.5 hours, a total of 60K customer-hours (North Dakota average 0.6 hours). That ranks 6th worst of 10 North Dakota counties and 2078th of 2,484 nationally.
Compared with ND, the US
Coverage line is EAGLE-I's share of North Dakota customers tracked each year.
Biggest outages in Cass 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 18, 2015 23:00 | June 19, 2015 02:45 | 3h 45m | 13,568 | 5,837 |
| 2 | September 3, 2015 22:30 | September 4, 2015 02:15 | 3h 45m | 5,496 | 4,514 |
| 3 | October 12, 2015 11:45 | October 12, 2015 15:30 | 3h 45m | 3,959 | 4,942 |
| 4 | February 2, 2015 16:00 | February 2, 2015 16:30 | 30m | 2,367 | 652 |
| 5 | October 12, 2015 21:30 | October 13, 2015 02:45 | 5h 15m | 2,130 | 3,732 |
| 6 | May 6, 2015 20:00 | May 6, 2015 21:15 | 1h 15m | 2,125 | 1,126 |
| 7 | August 6, 2015 23:15 | August 7, 2015 00:00 | 45m | 2,116 | 1,587 |
| 8 | October 11, 2015 19:15 | October 12, 2015 04:15 | 9h | 2,096 | 1,326 |
| 9 | September 10, 2015 13:45 | September 10, 2015 16:00 | 2h 15m | 1,555 | 562 |
| 10 | May 6, 2015 22:00 | May 6, 2015 23:30 | 1h 30m | 1,468 | 429 |
Outage episodes by size in 2015: 79 reached 100+ customers, 11 reached 1,000+ customers, 1 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 Cass 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2015 | 1.8 hrs | 3.23 | 1.8 hrs | 3.23 |
| Northern States Power Co - Minnesota | 2015 | 2.1 hrs | 0.88 | 82 min | 0.81 |
| Nodak Electric Coop Inc | 2015 | 2.2 hrs | 0.59 | 2.2 hrs | 0.59 |
| Cass County Elec Coop Inc | 2015 | 47 min | 1.18 | 38 min | 1.05 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
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 North Dakota's customers in 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 124,603 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. Cass County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cass County, ND 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/north-dakota/cass-county