County annual report · FIPS 38031
2021 Foster County, ND Power Outage Report
In 2021, customers in Foster County, ND went without power for an average of 0.1 hours, a total of 189 customer-hours (North Dakota average 1.0 hours). That ranks 44th worst of 51 North Dakota counties and 2906th 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 Foster County, 2021
The 4 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 3, 2021 22:30 | February 3, 2021 22:45 | 15m | 504 | 126 |
| 2 | May 5, 2021 08:30 | May 5, 2021 08:45 | 15m | 54 | 14 |
| 3 | February 24, 2021 22:00 | February 24, 2021 22:15 | 15m | 49 | 12 |
| 4 | March 30, 2021 05:30 | March 30, 2021 06:15 | 45m | 49 | 37 |
Outage episodes by size in 2021: 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 Foster 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 |
| Northern Plains Electric Coop | 2021 | 2.5 hrs | 1.31 | 2.0 hrs | 1.19 |
| 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 66% of North Dakota's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,325 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. Foster County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Foster 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/foster-county