Custer County, MT Power Outages
Utilities serving Custer County, Montana don't yet share live outage data with DOE's ODIN feed. Check your electric company's outage map (listed below) for real-time status.
Custer County on the Montana outage map
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- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Custer County power outage history
Every significant outage recorded in Custer County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 66 significant power outages in Custer County, meaning events that left at least 1% of customers in the dark. The largest (Dec 3, 2020) left 4,487 customers (64.6% of the county) without power. NOAA recorded no major storm in the area at the time.
From 2018 to 2025, the average customer here lost about 1 hr 26 min of power per year, less than the Montana average of 3 hr 56 min. That ranks 44th of 52 Montana counties for outage time, where 1st has the most.
July is the riskiest month: it accounted for 50% of all customer outage time from 2018 to 2025. On 26 days in that period, at least 5% of customers were out at the same time. Outage time in Custer County has risen recently: about 1 hr 54 min per customer per year in 2022–2025, versus 57 min in 2018–2021.
The most recent significant outage on record (Sep 17, 2025) affected 86 customers (1.2%).
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Dec 3, 2020 | 4,487(64.6%) | 1 | No major storm reported |
| 2 | Nov 7, 2017 | 4,342(62.5%) | 1 | No major storm reported |
| 3 | Apr 13, 2017 | 4,145(59.7%) | 1 | No major storm reported |
| 4 | Oct 2, 2022 | 4,016(57.9%) | 1 | Wildfire |
| 5 | Jul 11–13, 2023 | 2,691(38.8%) | 3 | Severe thunderstorms |
Hours without power per customer, by year
When outages happen
Source: DOE/ORNL EAGLE-I recorded electricity outages, 2014–2025 (CC BY 4.0), with likely causes from the NOAA NCEI Storm Events Database. EAGLE-I coverage was partial before 2018, so averages use 2018–2025. Peak counts are the highest number of customers out at one time.
Who provides electricity in Custer County?
Electric companies with service territory in Custer County (EIA-861, 2025)
| Utility | Type | Customers (MT) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Montana-Dakota Utilities | Investor Owned | 27,906 | Not reporting | |
| McCone Electric Coop Inc | Cooperative | 5,481 | Not reporting | |
| Tongue River Electric Coop Inc | Cooperative | 5,229 | Not reporting | |
| Southeast Electric Coop, Inc | Cooperative | 2,196 | Not reporting | |
| Mid-Yellowstone Elec Coop, Inc | Cooperative | 2,053 | Not reporting | |
| WAPA-- Western Area Power Administration | Federal | 16 | Not reporting |
Customer counts are each utility's statewide total in Montana. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Custer County outage headlines in the past week.
Custer County power outage FAQ
Is the power out in Custer County right now?
No outages are currently reported for Custer County by participating utilities. Live coverage is limited here, so If your power is out, report it to your electric company.
Which electric company serves Custer County?
According to EIA-861 service territory data, Montana-Dakota Utilities Co, McCone Electric Coop Inc, Tongue River Electric Coop Inc, Southeast Electric Coop, Inc and 2 others provide electric service in Custer County, Montana.
What was the worst power outage in Custer County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Dec 3, 2020. It peaked at 4,487 customers without power (64.6% of the county). NOAA storm reports for that period point to no major storm reported.
How often does the power go out in Custer County?
EAGLE-I has recorded 66 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 1 hr 26 min of power per year, and on 26 days at least 5% of customers were out at once.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Underlying government data is public domain.
PowerOutageTracker.com. "Custer County, MT Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/montana/custer-county