County annual report · FIPS 30047
2023 Lake County, MT Power Outage Report
In 2023, customers in Lake County, MT went without power for an average of 0.8 hours, a total of 20K customer-hours (Montana average 1.8 hours). That ranks 38th worst of 50 Montana counties and 2729th of 2,977 nationally.
Compared with MT, the US and 2022
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Lake County, 2023
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 12, 2023 00:15 | June 12, 2023 02:30 | 2h 15m | 3,084 | 5,946 |
| 2 | November 12, 2023 01:45 | November 12, 2023 03:45 | 2h | 1,644 | 2,928 |
| 3 | February 4, 2023 20:00 | February 4, 2023 20:30 | 30m | 1,457 | 729 |
| 4 | May 15, 2023 18:00 | May 15, 2023 19:30 | 1h 30m | 1,113 | 557 |
| 5 | June 18, 2023 06:45 | June 19, 2023 16:45 | 1d 10h | 940 | 2,346 |
| 6 | March 24, 2023 18:45 | March 24, 2023 21:15 | 2h 30m | 406 | 900 |
| 7 | June 8, 2023 21:30 | June 8, 2023 23:45 | 2h 15m | 355 | 565 |
| 8 | August 18, 2023 21:00 | August 18, 2023 23:00 | 2h | 345 | 662 |
| 9 | February 21, 2023 17:45 | February 21, 2023 22:45 | 5h | 293 | 1,033 |
| 10 | August 24, 2023 23:45 | August 25, 2023 03:00 | 3h 15m | 282 | 776 |
Outage episodes by size in 2023: 13 reached 100+ customers, 4 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 2023, 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 | 2023 | 2.8 hrs | 1.19 | 2.8 hrs | 1.19 |
| Flathead Electric Coop Inc | 2023 | 2.7 hrs | 1.62 | 2.7 hrs | 1.62 |
| 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 n/a of Montana's customers in 2023; 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, 2023, 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/2023/montana/lake-county