County annual report · FIPS 30025
2020 Fallon County, MT Power Outage Report
In 2020, customers in Fallon County, MT went without power for an average of 1.7 hours, a total of 3,967 customer-hours (Montana average 5.6 hours). That ranks 42nd worst of 50 Montana counties and 2362nd 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 Fallon 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 | July 8, 2020 01:45 | July 8, 2020 11:30 | 9h 45m | 457 | 1,949 |
| 2 | June 1, 2020 01:30 | June 1, 2020 02:00 | 30m | 456 | 116 |
| 3 | August 11, 2020 21:00 | August 12, 2020 01:00 | 4h | 412 | 916 |
| 4 | September 9, 2020 23:30 | September 10, 2020 01:00 | 1h 30m | 210 | 262 |
| 5 | September 17, 2020 05:45 | September 17, 2020 08:15 | 2h 30m | 112 | 80 |
| 6 | April 24, 2020 06:45 | April 24, 2020 07:30 | 45m | 109 | 82 |
| 7 | April 24, 2020 01:00 | April 24, 2020 02:00 | 1h | 108 | 108 |
| 8 | June 20, 2020 12:15 | June 20, 2020 14:30 | 2h 15m | 83 | 153 |
| 9 | September 2, 2020 19:30 | September 2, 2020 21:45 | 2h 15m | 82 | 75 |
| 10 | July 23, 2020 21:00 | July 23, 2020 22:30 | 1h 30m | 20 | 30 |
Outage episodes by size in 2020: 7 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 Fallon 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 | - | - | - | - | - |
| Tongue River Electric Coop Inc | - | - | - | - | - |
| Goldenwest Electric Coop, Inc | - | - | - | - | - |
| Southeast Electric Coop, 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 ÷ 2,280 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. Fallon County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Fallon 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/fallon-county