County annual report · FIPS 30021
2019 Dawson County, MT Power Outage Report
In 2019, customers in Dawson County, MT went without power for an average of 1.0 hours, a total of 7,346 customer-hours (Montana average 0.6 hours). That ranks 14th worst of 38 Montana counties and 2498th of 2,945 nationally.
Compared with MT, the US and 2018
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Dawson County, 2019
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 15, 2019 04:15 | July 25, 2019 04:30 | 10d | 2,103 | 5,638 |
| 2 | June 6, 2019 15:15 | June 6, 2019 19:15 | 4h | 653 | 177 |
| 3 | May 31, 2019 22:15 | May 31, 2019 23:15 | 1h | 514 | 260 |
| 4 | June 8, 2019 08:30 | June 8, 2019 09:15 | 45m | 499 | 253 |
| 5 | July 31, 2019 21:30 | July 31, 2019 23:30 | 2h | 220 | 334 |
| 6 | May 14, 2019 16:00 | May 14, 2019 17:00 | 1h | 110 | 107 |
| 7 | May 19, 2019 12:45 | May 19, 2019 14:00 | 1h 15m | 94 | 115 |
| 8 | July 31, 2019 03:00 | July 31, 2019 04:15 | 1h 15m | 91 | 88 |
| 9 | September 18, 2019 04:30 | September 18, 2019 06:00 | 1h 30m | 85 | 115 |
| 10 | June 19, 2019 00:30 | June 19, 2019 02:15 | 1h 45m | 81 | 28 |
Outage episodes by size in 2019: 6 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 Dawson County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Montana-Dakota Utilities Co | - | - | - | - | - |
| 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 75% of Montana's customers in 2019; 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, 2019, 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/2019/montana/dawson-county