County annual report · FIPS 30067
2015 Park County, MT Power Outage Report
In 2015, customers in Park County, MT went without power for an average of 0.2 hours, a total of 1,510 customer-hours (Montana average 2.3 hours). That ranks 4th worst of 5 Montana counties and 2277th of 2,484 nationally.
Compared with MT, the US
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Park County, 2015
The 4 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 6, 2015 06:00 | July 6, 2015 13:15 | 7h 15m | 205 | 1,486 |
| 2 | May 16, 2015 18:45 | May 16, 2015 20:30 | 1h 45m | 13 | 23 |
| 3 | January 12, 2015 18:45 | January 12, 2015 19:15 | 30m | 2 | 1 |
| 4 | October 11, 2015 21:45 | October 11, 2015 22:00 | 15m | 1 | 0 |
Outage episodes by size in 2015: 1 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 2015, 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) | 2015 | 4.3 hrs | 1.56 | 1.9 hrs | 1.32 |
| Flathead Electric Coop Inc | 2015 | 7.6 hrs | 1.87 | 3.1 hrs | 1.50 |
| 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 2015; 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, 2015, 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/2015/montana/park-county