County annual report · FIPS 30071
2020 Phillips County, MT Power Outage Report
In 2020, customers in Phillips County, MT went without power for an average of 11.1 hours, a total of 22K customer-hours (Montana average 5.6 hours). That ranks 13th worst of 50 Montana counties and 720th of 3,019 nationally.
Compared with MT, the US and 2019
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Phillips County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 28, 2020 22:30 | July 29, 2020 00:45 | 2h 15m | 2,432 | 4,275 |
| 2 | July 4, 2020 00:00 | July 15, 2020 17:45 | 11d 17h | 452 | 13K |
| 3 | June 28, 2020 01:00 | June 28, 2020 05:15 | 4h 15m | 441 | 984 |
| 4 | August 21, 2020 02:30 | August 21, 2020 10:00 | 7h 30m | 187 | 970 |
| 5 | November 3, 2020 15:00 | November 3, 2020 18:45 | 3h 45m | 129 | 484 |
| 6 | May 6, 2020 12:45 | May 8, 2020 21:30 | 2d 8h | 121 | 329 |
| 7 | May 12, 2020 16:15 | May 12, 2020 19:45 | 3h 30m | 121 | 351 |
| 8 | January 5, 2020 01:30 | January 5, 2020 06:30 | 5h | 95 | 239 |
| 9 | February 20, 2020 12:30 | February 20, 2020 14:00 | 1h 30m | 82 | 123 |
| 10 | October 15, 2020 19:00 | October 15, 2020 21:45 | 2h 45m | 82 | 226 |
Outage episodes by size in 2020: 7 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 Phillips County reported on EIA Form 861 for 2020, 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) | 2020 | 2.8 hrs | 1.13 | 2.0 hrs | 1.02 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| NorthWestern Energy | - | - | - | - | - |
| NorVal Electric Cooperative, 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 76% of Montana's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,992 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. Phillips County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Phillips County, MT annual power outage report, 2020, 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/2020/montana/phillips-county