County annual report · FIPS 38019
2021 Cavalier County, ND Power Outage Report
In 2021, customers in Cavalier County, ND went without power for an average of 2.6 hours, a total of 2,391 customer-hours (North Dakota average 1.0 hours). That ranks 10th worst of 51 North Dakota counties and 2009th of 2,974 nationally.
Compared with ND, the US and 2020
Coverage line is EAGLE-I's share of North Dakota customers tracked each year.
Biggest outages in Cavalier County, 2021
The 6 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 4, 2021 01:15 | February 4, 2021 04:30 | 3h 15m | 1,864 | 1,140 |
| 2 | January 10, 2021 18:00 | January 11, 2021 00:45 | 6h 45m | 219 | 676 |
| 3 | February 2, 2021 19:00 | February 2, 2021 22:30 | 3h 30m | 149 | 304 |
| 4 | January 26, 2021 15:15 | January 26, 2021 15:45 | 30m | 130 | 65 |
| 5 | January 29, 2021 14:45 | January 29, 2021 15:30 | 45m | 130 | 98 |
| 6 | February 2, 2021 12:45 | February 2, 2021 14:00 | 1h 15m | 87 | 109 |
Outage episodes by size in 2021: 5 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 Cavalier 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2021 | 86 min | 1.13 | 74 min | 1.09 |
| Nodak Electric Coop Inc | 2021 | 3.4 hrs | 1.38 | 3.4 hrs | 1.38 |
| Cavalier Rural Elec Coop, Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 66% of North Dakota's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 928 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. Cavalier County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Cavalier County, ND 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/north-dakota/cavalier-county