County annual report · FIPS 30025
2017 Fallon County, MT Power Outage Report
In 2017, customers in Fallon County, MT went without power for an average of 1.3 hours, a total of 2,937 customer-hours (Montana average 2.7 hours). That ranks 10th worst of 19 Montana counties and 1916th of 2,786 nationally.
Compared with MT, the US
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Fallon County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 21, 2017 23:45 | February 22, 2017 02:15 | 2h 30m | 79 | 68 |
| 2 | June 17, 2017 18:00 | June 25, 2017 09:15 | 7d 15h | 68 | 1,343 |
| 3 | April 30, 2017 04:45 | May 9, 2017 02:15 | 8d 21h | 44 | 801 |
| 4 | July 2, 2017 22:45 | July 3, 2017 13:15 | 14h 30m | 42 | 63 |
| 5 | September 13, 2017 23:30 | September 14, 2017 03:15 | 3h 45m | 21 | 15 |
| 6 | July 13, 2017 22:00 | July 23, 2017 16:30 | 9d 18h | 10 | 523 |
| 7 | August 2, 2017 19:15 | August 2, 2017 20:15 | 1h | 8 | 8 |
| 8 | October 26, 2017 17:15 | October 26, 2017 18:00 | 45m | 6 | 3 |
| 9 | March 17, 2017 19:45 | March 17, 2017 22:00 | 2h 15m | 5 | 9 |
| 10 | September 14, 2017 19:30 | September 14, 2017 20:45 | 1h 15m | 5 | 4 |
Outage episodes by size in 2017: 0 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 2017, 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 n/a of Montana's customers in 2017; 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, 2017, 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/2017/montana/fallon-county