County annual report · FIPS 30067
2017 Park County, MT Power Outage Report
In 2017, customers in Park County, MT went without power for an average of 0.8 hours, a total of 6,810 customer-hours (Montana average 2.7 hours). That ranks 14th worst of 19 Montana counties and 2150th of 2,786 nationally.
Compared with MT, the US and 2016
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Park 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 | September 22, 2017 06:45 | September 22, 2017 20:45 | 14h | 340 | 2,896 |
| 2 | July 17, 2017 02:15 | July 17, 2017 02:45 | 30m | 338 | 169 |
| 3 | April 15, 2017 13:15 | April 15, 2017 15:00 | 1h 45m | 336 | 504 |
| 4 | June 17, 2017 11:15 | June 17, 2017 17:00 | 5h 45m | 254 | 1,078 |
| 5 | April 21, 2017 15:30 | April 21, 2017 23:45 | 8h 15m | 252 | 2,079 |
| 6 | August 27, 2017 15:30 | August 27, 2017 18:45 | 3h 15m | 9 | 27 |
| 7 | September 4, 2017 15:15 | September 4, 2017 21:30 | 6h 15m | 4 | 25 |
| 8 | May 24, 2017 16:30 | May 24, 2017 22:45 | 6h 15m | 2 | 13 |
| 9 | December 5, 2017 13:15 | December 5, 2017 14:15 | 1h | 2 | 2 |
| 10 | December 19, 2017 07:15 | December 19, 2017 07:30 | 15m | 2 | 1 |
Outage episodes by size in 2017: 5 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 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 |
|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2017 | 2.6 hrs | 1.38 | 2.4 hrs | 1.30 |
| Flathead Electric Coop Inc | 2017 | 6.1 hrs | 2.20 | 3.5 hrs | 1.48 |
| 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 n/a of Montana's customers in 2017; 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, 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2017/montana/park-county