County annual report · FIPS 30083
2018 Richland County, MT Power Outage Report
In 2018, customers in Richland County, MT went without power for an average of 2.7 hours, a total of 27K customer-hours (Montana average 1.9 hours). That ranks 5th worst of 20 Montana counties and 1595th of 2,798 nationally.
Compared with MT, the US and 2017
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Richland County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 13, 2018 12:45 | February 13, 2018 15:00 | 2h 15m | 2,864 | 4,084 |
| 2 | May 24, 2018 00:00 | May 24, 2018 01:45 | 1h 45m | 1,614 | 1,876 |
| 3 | August 9, 2018 21:30 | August 18, 2018 11:00 | 8d 13h | 1,547 | 6,636 |
| 4 | February 15, 2018 10:15 | February 15, 2018 10:45 | 30m | 1,511 | 379 |
| 5 | June 29, 2018 02:15 | June 30, 2018 01:15 | 23h | 1,089 | 7,754 |
| 6 | May 27, 2018 05:00 | May 27, 2018 07:30 | 2h 30m | 783 | 1,767 |
| 7 | May 31, 2018 13:15 | May 31, 2018 13:30 | 15m | 767 | 192 |
| 8 | March 5, 2018 21:30 | March 5, 2018 23:45 | 2h 15m | 339 | 657 |
| 9 | January 7, 2018 13:45 | January 7, 2018 14:45 | 1h | 281 | 262 |
| 10 | June 27, 2018 05:30 | June 27, 2018 06:30 | 1h | 172 | 56 |
Outage episodes by size in 2018: 11 reached 100+ customers, 5 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 2018, 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 | 2018 | 3.7 hrs | 1.47 | 3.7 hrs | 1.47 |
| 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 16% of Montana's customers in 2018; 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, 2018, 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/2018/montana/richland-county