County annual report · FIPS 30019
2021 Daniels County, MT Power Outage Report
In 2021, customers in Daniels County, MT went without power for an average of 1.7 hours, a total of 716 customer-hours (Montana average 5.0 hours). That ranks 37th worst of 51 Montana counties and 2376th of 2,974 nationally.
Compared with MT, the US and 2020
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Daniels County, 2021
The 5 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 14, 2021 04:30 | January 14, 2021 07:15 | 2h 45m | 643 | 456 |
| 2 | November 16, 2021 17:15 | November 16, 2021 22:30 | 5h 15m | 59 | 175 |
| 3 | July 11, 2021 22:30 | July 12, 2021 02:30 | 4h | 18 | 72 |
| 4 | September 22, 2021 01:30 | September 22, 2021 01:45 | 15m | 13 | 3 |
| 5 | March 2, 2021 22:45 | March 3, 2021 00:30 | 1h 45m | 5 | 9 |
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 Daniels 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 |
|---|---|---|---|---|---|
| Montana-Dakota Utilities Co | - | - | - | - | - |
| Sheridan Electric Coop, Inc | - | - | - | - | - |
| NorVal Electric Cooperative, 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 76% of Montana's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 429 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. Daniels County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Daniels County, MT 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/). https://massoutage.com/reports/2021/montana/daniels-county