2017 Montana Power Outage Report
In 2017, the average Montana customer went without power for about 2.7 hours, the 30th worst of 51 states (US average 7.3 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.
Avg hrs / customer
2.7
vs prior year
▲ 46%
vs 2016
Customer-hours out
448K
Peak customers out
13,744
across the state at once
EAGLE-I coverage
n/a
of MT customers
Counties reporting
19
Montana year over year
All 19 Montana counties, 2017
Ranked by average hours without power per customer. Each county links to its annual report.
| # | County | Hrs / customer | Customer-hours | Customers | Peak out | Events |
|---|---|---|---|---|---|---|
| 1 | Lincoln County | 6.9 | 88K | 12,721 | 5,757 | 249 |
| 2 | Flathead County | 3.9 | 256K | 65,575 | 10,941 | 719 |
| 3 | Sanders County | 2.7 | 19K | 7,314 | 1,041 | 138 |
| 4 | Daniels County | 2.2 | 944 | 429 | 6 | 7 |
| 5 | Richland County | 2.0 | 20K | 9,805 | 2,682 | 70 |
| 6 | Sheridan County | 2.0 | 3,522 | 1,766 | 649 | 26 |
| 7 | Custer County | 1.7 | 12K | 6,942 | 4,342 | 107 |
| 8 | Rosebud County | 1.5 | 6,792 | 4,647 | 1,185 | 34 |
| 9 | Prairie County | 1.3 | 1,020 | 758 | 123 | 10 |
| 10 | Fallon County | 1.3 | 2,937 | 2,280 | 79 | 23 |
| 11 | Roosevelt County | 1.0 | 7,402 | 7,252 | 1,388 | 51 |
| 12 | Powder River County | 1.0 | 556 | 583 | 33 | 8 |
| 13 | Dawson County | 0.9 | 6,443 | 7,435 | 2,586 | 86 |
| 14 | Park County | 0.8 | 6,810 | 8,763 | 340 | 16 |
| 15 | Lake County | 0.7 | 17K | 24,041 | 1,485 | 104 |
| 16 | Wibaux County | 0.2 | 162 | 675 | 377 | 5 |
| 17 | McCone County | 0.0 | 53 | 2,179 | 7 | 3 |
| 18 | Carter County | 0.0 | 8 | 508 | 1 | 2 |
| 19 | Mineral County | 0.0 | 22 | 2,455 | 8 | 1 |
Biggest Montana outages of 2017
Up to 25 county outage episodes with the most customers out at once.
| # | County | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|---|
| 1 | Flathead County, MT | October 17, 2017 15:00 | October 20, 2017 01:45 | 2d 10h | 10,941 | 70K |
| 2 | Flathead County, MT | August 11, 2017 01:30 | August 12, 2017 01:45 | 1d | 6,435 | 32K |
| 3 | Lincoln County, MT | December 19, 2017 15:45 | December 23, 2017 09:15 | 3d 17h | 5,757 | 32K |
| 4 | Custer County, MT | November 7, 2017 08:30 | November 7, 2017 09:45 | 1h 15m | 4,342 | 1,101 |
| 5 | Custer County, MT | April 13, 2017 00:15 | April 13, 2017 17:15 | 17h | 4,145 | 1,434 |
| 6 | Flathead County, MT | May 24, 2017 06:00 | May 25, 2017 02:00 | 20h | 3,745 | 16K |
| 7 | Lincoln County, MT | July 7, 2017 11:30 | July 7, 2017 14:00 | 2h 30m | 2,962 | 3,333 |
| 8 | Flathead County, MT | December 19, 2017 19:15 | December 21, 2017 02:00 | 1d 6h | 2,705 | 17K |
| 9 | Richland County, MT | September 1, 2017 02:45 | September 1, 2017 13:15 | 10h 30m | 2,682 | 13K |
| 10 | Dawson County, MT | May 25, 2017 01:00 | May 25, 2017 09:15 | 8h 15m | 2,586 | 1,318 |
| 11 | Flathead County, MT | September 7, 2017 16:45 | September 7, 2017 18:45 | 2h | 2,384 | 613 |
| 12 | Richland County, MT | October 21, 2017 04:00 | October 21, 2017 11:30 | 7h 30m | 2,085 | 1,402 |
| 13 | Richland County, MT | October 19, 2017 15:15 | October 19, 2017 16:15 | 1h | 2,059 | 1,035 |
| 14 | Flathead County, MT | July 7, 2017 19:00 | July 8, 2017 07:00 | 12h | 1,999 | 7,273 |
| 15 | Lincoln County, MT | October 17, 2017 20:00 | October 19, 2017 11:45 | 1d 15h | 1,988 | 17K |
| 16 | Flathead County, MT | July 7, 2017 11:30 | July 7, 2017 16:30 | 5h | 1,966 | 1,977 |
| 17 | Flathead County, MT | November 24, 2017 05:30 | November 24, 2017 12:00 | 6h 30m | 1,797 | 4,730 |
| 18 | Flathead County, MT | March 26, 2017 13:45 | March 26, 2017 22:45 | 9h | 1,680 | 3,962 |
| 19 | Flathead County, MT | August 14, 2017 17:45 | August 15, 2017 07:30 | 13h 45m | 1,620 | 952 |
| 20 | Lincoln County, MT | February 9, 2017 22:15 | February 10, 2017 16:15 | 18h | 1,605 | 4,179 |
| 21 | Lincoln County, MT | September 12, 2017 15:15 | September 12, 2017 17:15 | 2h | 1,594 | 1,572 |
| 22 | Flathead County, MT | June 8, 2017 14:15 | June 9, 2017 11:00 | 20h 45m | 1,582 | 3,031 |
| 23 | Flathead County, MT | July 23, 2017 13:45 | July 23, 2017 17:00 | 3h 15m | 1,553 | 2,355 |
| 24 | Lake County, MT | September 19, 2017 18:45 | September 19, 2017 20:45 | 2h | 1,485 | 380 |
| 25 | Flathead County, MT | September 4, 2017 09:00 | September 5, 2017 01:30 | 16h 30m | 1,444 | 3,440 |
EAGLE-I tracked about n/a of Montana's electricity customers in 2017; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Part of the 2017 US Power Outage Report.
Data from DOE EAGLE-I, every source we read.