County annual report · FIPS 30021
2020 Dawson County, MT Power Outage Report
In 2020, customers in Dawson County, MT went without power for an average of 0.7 hours, a total of 5,459 customer-hours (Montana average 5.6 hours). That ranks 44th worst of 50 Montana counties and 2758th of 3,019 nationally.
Compared with MT, the US and 2019
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Dawson County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 13, 2020 19:30 | June 13, 2020 22:30 | 3h | 377 | 826 |
| 2 | April 10, 2020 11:45 | April 10, 2020 14:00 | 2h 15m | 142 | 67 |
| 3 | September 20, 2020 18:45 | September 20, 2020 22:15 | 3h 30m | 127 | 141 |
| 4 | May 20, 2020 22:15 | May 21, 2020 00:45 | 2h 30m | 115 | 54 |
| 5 | October 12, 2020 20:15 | October 12, 2020 21:15 | 1h | 84 | 45 |
| 6 | October 4, 2020 16:15 | October 4, 2020 18:15 | 2h | 79 | 47 |
| 7 | June 28, 2020 13:30 | June 28, 2020 15:00 | 1h 30m | 68 | 72 |
| 8 | June 28, 2020 06:00 | June 28, 2020 09:15 | 3h 15m | 64 | 115 |
| 9 | August 7, 2020 15:15 | August 7, 2020 17:00 | 1h 45m | 46 | 70 |
| 10 | May 4, 2020 01:30 | May 4, 2020 05:00 | 3h 30m | 42 | 99 |
Outage episodes by size in 2020: 4 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 2020, 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 76% of Montana's customers in 2020; 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, 2020, 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/2020/montana/dawson-county