County annual report · FIPS 30005
2023 Blaine County, MT Power Outage Report
In 2023, customers in Blaine County, MT went without power for an average of 3.3 hours, a total of 8,956 customer-hours (Montana average 1.8 hours). That ranks 16th worst of 50 Montana counties and 1870th 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 Blaine 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 19, 2023 02:45 | June 19, 2023 08:00 | 5h 15m | 1,211 | 4,576 |
| 2 | February 20, 2023 20:45 | February 20, 2023 23:00 | 2h 15m | 491 | 1,105 |
| 3 | August 14, 2023 13:00 | August 14, 2023 20:00 | 7h | 307 | 582 |
| 4 | September 19, 2023 17:15 | September 19, 2023 18:45 | 1h 30m | 263 | 395 |
| 5 | May 17, 2023 01:15 | May 17, 2023 03:30 | 2h 15m | 150 | 300 |
| 6 | April 14, 2023 14:45 | April 14, 2023 17:00 | 2h 15m | 93 | 97 |
| 7 | January 15, 2023 20:30 | January 15, 2023 23:00 | 2h 30m | 85 | 213 |
| 8 | July 31, 2023 21:30 | July 31, 2023 23:45 | 2h 15m | 64 | 65 |
| 9 | September 22, 2023 01:15 | September 22, 2023 05:00 | 3h 45m | 42 | 124 |
| 10 | July 20, 2023 11:15 | July 20, 2023 12:30 | 1h 15m | 37 | 19 |
Outage episodes by size in 2023: 5 reached 100+ customers, 1 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 Blaine 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 |
|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2023 | 1.7 hrs | 0.93 | 1.7 hrs | 0.93 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Fergus Electric Coop, Inc | - | - | - | - | - |
| Hill County Electric Coop, Inc | - | - | - | - | - |
| Big Flat 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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,740 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. Blaine County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Blaine 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/blaine-county