County annual report · FIPS 30067
2018 Park County, MT Power Outage Report
In 2018, customers in Park County, MT went without power for an average of 0.8 hours, a total of 6,843 customer-hours (Montana average 1.9 hours). That ranks 9th worst of 20 Montana counties and 2397th 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 Park 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 | June 18, 2018 21:30 | June 19, 2018 03:30 | 6h | 345 | 1,259 |
| 2 | August 3, 2018 01:00 | August 3, 2018 08:45 | 7h 45m | 345 | 2,284 |
| 3 | October 10, 2018 06:30 | October 10, 2018 15:00 | 8h 30m | 344 | 2,924 |
| 4 | October 12, 2018 15:00 | October 12, 2018 16:45 | 1h 45m | 68 | 86 |
| 5 | May 31, 2018 02:30 | May 31, 2018 06:00 | 3h 30m | 50 | 160 |
| 6 | September 17, 2018 02:15 | September 17, 2018 09:15 | 7h | 11 | 63 |
| 7 | July 10, 2018 17:00 | July 11, 2018 00:15 | 7h 15m | 7 | 51 |
| 8 | January 12, 2018 15:00 | January 12, 2018 16:00 | 1h | 2 | 2 |
| 9 | October 9, 2018 20:00 | October 10, 2018 00:45 | 4h 45m | 2 | 10 |
| 10 | February 6, 2018 21:00 | February 6, 2018 21:15 | 15m | 1 | 0 |
Outage episodes by size in 2018: 3 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 Park 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 |
|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2018 | 1.7 hrs | 1.08 | 1.7 hrs | 1.08 |
| Flathead Electric Coop Inc | 2018 | 2.8 hrs | 1.56 | 2.8 hrs | 1.56 |
| NorthWestern Energy | - | - | - | - | - |
| Park 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 ÷ 8,763 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. Park County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Park 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2018/montana/park-county