County annual report · FIPS 30047
2019 Lake County, MT Power Outage Report
In 2019, customers in Lake County, MT went without power for an average of 0.8 hours, a total of 19K customer-hours (Montana average 0.6 hours). That ranks 16th worst of 38 Montana counties and 2587th of 2,945 nationally.
Compared with MT, the US and 2018
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Lake County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 27, 2019 15:00 | December 2, 2019 23:30 | 5d 8h | 1,994 | 12K |
| 2 | March 3, 2019 21:00 | March 3, 2019 21:30 | 30m | 1,459 | 730 |
| 3 | January 23, 2019 16:30 | January 23, 2019 20:00 | 3h 30m | 960 | 1,751 |
| 4 | January 8, 2019 17:00 | January 8, 2019 17:30 | 30m | 352 | 167 |
| 5 | February 3, 2019 12:45 | February 4, 2019 05:00 | 16h 15m | 253 | 1,442 |
| 6 | February 9, 2019 07:30 | February 9, 2019 11:45 | 4h 15m | 157 | 561 |
| 7 | July 5, 2019 08:30 | July 5, 2019 11:30 | 3h | 132 | 364 |
| 8 | May 25, 2019 12:00 | May 25, 2019 16:00 | 4h | 102 | 383 |
| 9 | June 4, 2019 22:30 | June 5, 2019 01:45 | 3h 15m | 102 | 309 |
| 10 | April 16, 2019 12:45 | April 16, 2019 14:15 | 1h 30m | 74 | 93 |
Outage episodes by size in 2019: 9 reached 100+ customers, 2 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 Lake County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| Missoula Electric Coop, Inc | 2018 | 4.0 hrs | 1.49 | 2.8 hrs | 1.31 |
| Flathead Electric Coop Inc | 2018 | 2.8 hrs | 1.56 | 2.8 hrs | 1.56 |
| USBIA-Mission Valley Power | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 75% of Montana's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 24,041 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. Lake County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lake County, MT annual power outage report, 2019, 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/2019/montana/lake-county