County annual report · FIPS 30083
2021 Richland County, MT Power Outage Report
In 2021, customers in Richland County, MT went without power for an average of 7.9 hours, a total of 77K customer-hours (Montana average 5.0 hours). That ranks 20th worst of 51 Montana counties and 947th of 2,974 nationally.
Compared with MT, the US and 2020
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Richland County, 2021
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 6, 2021 02:30 | June 21, 2021 03:15 | 15d | 2,967 | 44K |
| 2 | May 5, 2021 07:00 | May 8, 2021 13:15 | 3d 6h | 2,854 | 19K |
| 3 | June 24, 2021 21:00 | June 25, 2021 03:15 | 6h 15m | 2,524 | 1,660 |
| 4 | July 26, 2021 17:45 | July 26, 2021 18:15 | 30m | 987 | 250 |
| 5 | November 16, 2021 16:15 | November 21, 2021 21:15 | 5d 5h | 801 | 3,442 |
| 6 | May 20, 2021 14:15 | May 23, 2021 03:00 | 2d 12h | 786 | 984 |
| 7 | January 13, 2021 23:15 | January 16, 2021 10:15 | 2d 11h | 178 | 449 |
| 8 | June 25, 2021 06:00 | July 4, 2021 21:00 | 9d 15h | 176 | 1,261 |
| 9 | August 10, 2021 00:45 | August 10, 2021 02:00 | 1h 15m | 169 | 208 |
| 10 | September 7, 2021 16:15 | September 17, 2021 16:15 | 10d | 94 | 1,493 |
Outage episodes by size in 2021: 9 reached 100+ customers, 3 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 Richland County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| McKenzie Electric Coop Inc | 2021 | 2.7 hrs | 1.42 | 2.7 hrs | 1.42 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Montana-Dakota Utilities Co | - | - | - | - | - |
| McCone Electric Coop Inc | - | - | - | - | - |
| Sheridan Electric Coop, Inc | - | - | - | - | - |
| Lower Yellowstone R E A, 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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 9,805 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. Richland County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Richland County, MT annual power outage report, 2021, 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/2021/montana/richland-county