County annual report · FIPS 30073
2022 Pondera County, MT Power Outage Report
In 2022, customers in Pondera County, MT went without power for an average of 4.8 hours, a total of 9,726 customer-hours (Montana average 3.5 hours). That ranks 23rd worst of 50 Montana counties and 1471st of 2,976 nationally.
Compared with MT, the US and 2021
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Pondera County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 20, 2022 01:30 | May 20, 2022 09:30 | 8h | 815 | 2,832 |
| 2 | June 20, 2022 22:15 | June 21, 2022 00:45 | 2h 30m | 786 | 486 |
| 3 | July 5, 2022 06:00 | July 5, 2022 08:30 | 2h 30m | 639 | 1,598 |
| 4 | July 18, 2022 23:30 | July 19, 2022 01:30 | 2h | 522 | 914 |
| 5 | November 5, 2022 14:30 | November 5, 2022 17:00 | 2h 30m | 137 | 261 |
| 6 | April 11, 2022 08:30 | April 11, 2022 14:00 | 5h 30m | 104 | 471 |
| 7 | February 8, 2022 15:45 | February 8, 2022 20:45 | 5h | 97 | 485 |
| 8 | February 10, 2022 14:15 | February 10, 2022 16:30 | 2h 15m | 97 | 218 |
| 9 | July 18, 2022 07:30 | July 18, 2022 08:45 | 1h 15m | 97 | 121 |
| 10 | July 29, 2022 21:30 | July 29, 2022 23:00 | 1h 30m | 97 | 146 |
Outage episodes by size in 2022: 6 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 Pondera County reported on EIA Form 861 for 2022, 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) | 2022 | 2.2 hrs | 1.14 | 2.0 hrs | 1.09 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Sun River Electric Coop, Inc | - | - | - | - | - |
| Glacier Electric Coop, Inc | - | - | - | - | - |
| Marias River 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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,031 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. Pondera County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Pondera County, MT annual power outage report, 2022, 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/2022/montana/pondera-county