County annual report · FIPS 30021
2025 Dawson County, MT Power Outage Report
In 2025, customers in Dawson County, MT went without power for an average of 0.1 hours, a total of 808 customer-hours (Montana average 6.8 hours). That ranks 47th worst of 51 Montana counties and 2939th of 3,000 nationally.
Compared with MT, the US and 2024
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Dawson County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 3, 2025 06:15 | July 3, 2025 09:00 | 2h 45m | 259 | 202 |
| 2 | May 5, 2025 23:15 | May 6, 2025 00:30 | 1h 15m | 84 | 75 |
| 3 | July 25, 2025 23:45 | July 26, 2025 13:15 | 13h 30m | 78 | 142 |
| 4 | January 21, 2025 17:45 | January 21, 2025 18:15 | 30m | 45 | 23 |
| 5 | January 9, 2025 19:45 | January 9, 2025 20:30 | 45m | 36 | 16 |
| 6 | May 12, 2025 00:30 | May 12, 2025 01:15 | 45m | 36 | 27 |
| 7 | December 18, 2025 03:45 | December 18, 2025 07:30 | 3h 45m | 23 | 57 |
| 8 | October 20, 2025 21:15 | October 20, 2025 21:30 | 15m | 18 | 5 |
| 9 | August 5, 2025 10:15 | August 5, 2025 10:30 | 15m | 17 | 4 |
| 10 | July 29, 2025 14:45 | July 29, 2025 15:15 | 30m | 15 | 8 |
Outage episodes by size in 2025: 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 Dawson County reported on EIA Form 861 for 2025, 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 | 2024 | 2.9 hrs | 1.26 | 2.1 hrs | 1.10 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| McCone Electric Coop Inc | - | - | - | - | - |
| Tongue River Electric Coop Inc | - | - | - | - | - |
| Goldenwest Electric Coop, Inc | - | - | - | - | - |
| Lower Yellowstone R E A, 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 n/a of Montana's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,435 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. Dawson County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Dawson County, MT annual power outage report, 2025, 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/2025/montana/dawson-county