County annual report · FIPS 30025
2018 Fallon County, MT Power Outage Report
In 2018, customers in Fallon County, MT went without power for an average of 0.2 hours, a total of 524 customer-hours (Montana average 1.9 hours). That ranks 16th worst of 20 Montana counties and 2614th of 2,798 nationally.
Compared with MT, the US and 2017
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Fallon County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 28, 2018 00:15 | January 29, 2018 14:15 | 1d 14h | 85 | 270 |
| 2 | June 8, 2018 03:00 | June 8, 2018 05:30 | 2h 30m | 54 | 44 |
| 3 | January 20, 2018 03:00 | January 20, 2018 05:00 | 2h | 52 | 25 |
| 4 | July 9, 2018 20:15 | July 9, 2018 21:15 | 1h | 51 | 22 |
| 5 | July 19, 2018 16:15 | July 19, 2018 18:00 | 1h 45m | 40 | 22 |
| 6 | August 18, 2018 17:00 | August 19, 2018 01:15 | 8h 15m | 35 | 59 |
| 7 | October 3, 2018 14:15 | October 3, 2018 15:15 | 1h | 11 | 8 |
| 8 | April 30, 2018 00:30 | April 30, 2018 01:00 | 30m | 9 | 4 |
| 9 | August 14, 2018 17:00 | August 14, 2018 18:00 | 1h | 7 | 7 |
| 10 | January 20, 2018 02:00 | January 20, 2018 02:15 | 15m | 5 | 1 |
Outage episodes by size in 2018: 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 2018, 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 16% of Montana's customers in 2018; 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, 2018, 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/2018/montana/fallon-county