County annual report · FIPS 30037
2023 Golden Valley County, MT Power Outage Report
In 2023, customers in Golden Valley County, MT went without power for an average of 14.3 hours, a total of 4,503 customer-hours (Montana average 1.8 hours). That ranks 2nd worst of 50 Montana counties and 612th 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 Golden Valley 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 8, 2023 23:15 | June 9, 2023 06:00 | 6h 45m | 568 | 1,340 |
| 2 | June 21, 2023 00:15 | June 21, 2023 01:45 | 1h 30m | 490 | 614 |
| 3 | June 10, 2023 20:00 | June 11, 2023 01:00 | 5h | 287 | 1,073 |
| 4 | July 20, 2023 16:15 | July 20, 2023 19:00 | 2h 45m | 225 | 388 |
| 5 | December 14, 2023 17:15 | December 14, 2023 19:45 | 2h 30m | 58 | 82 |
| 6 | June 23, 2023 23:45 | June 28, 2023 12:15 | 4d 12h | 57 | 700 |
| 7 | June 9, 2023 20:15 | June 9, 2023 23:30 | 3h 15m | 25 | 58 |
| 8 | November 3, 2023 17:00 | November 3, 2023 18:15 | 1h 15m | 16 | 17 |
| 9 | February 12, 2023 21:45 | February 13, 2023 01:45 | 4h | 13 | 16 |
| 10 | May 8, 2023 05:30 | May 8, 2023 21:15 | 15h 45m | 7 | 110 |
Outage episodes by size in 2023: 4 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 Golden Valley 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 |
| Fergus 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 ÷ 316 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. Golden Valley County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Golden Valley 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/golden-valley-county