Lewis and Clark County, MT Power Outages
Utilities serving Lewis and Clark 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.
Lewis and Clark County on the Montana outage map
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Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Lewis and Clark County power outage history
Every significant outage recorded in Lewis and Clark County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 110 significant power outages in Lewis and Clark County, meaning events that left at least 1% of customers in the dark. The largest (Jun 4, 2021) came when severe thunderstorms left 27,788 customers (84.5% of the county) without power.
From 2018 to 2025, the average customer here lost about 4 hr 3 min of power per year, close to the Montana average of 3 hr 56 min. That ranks 29th of 52 Montana counties for outage time, where 1st has the most.
December is the riskiest month: it accounted for 20% of all customer outage time from 2018 to 2025. On 46 days in that period, at least 5% of customers were out at the same time. Outage time in Lewis and Clark County has held roughly steady recently: about 4 hr 18 min per customer per year in 2022–2025, versus 3 hr 43 min in 2018–2021.
The most recent significant outage on record (Dec 16–20, 2025) affected 9,800 customers (29.8%) amid high winds.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Jun 4, 2021 | 27,788(84.5%) | 1 | Severe thunderstorms |
| 2 | Jun 3, 2025 | 12,309(37.4%) | 1 | Wildfire |
| 3 | Dec 16–20, 2025 | 9,800(29.8%) | 5 | High winds |
| 4 | Jun 3, 2020 | 8,404(25.6%) | 1 | Hail and lightning |
| 5 | Jul 16–21, 2021 | 5,593(17%) | 6 | Hail and lightning |
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 Lewis and Clark County?
Electric companies with service territory in Lewis and Clark County (EIA-861, 2025)
| Utility | Type | Customers (MT) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| NorthWestern Energy (Montana) | Investor Owned | 438,851 | Not reporting | |
| Vigilante Electric Coop, Inc | Cooperative | 11,420 | Not reporting | |
| Sun River Electric Coop, Inc | Cooperative | 6,300 | 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 Lewis and Clark County outage headlines in the past week.
Cities in Lewis and Clark County
Helena
Nearby counties
Lewis and Clark County power outage FAQ
Is the power out in Lewis and Clark County right now?
No outages are currently reported for Lewis and Clark 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 Lewis and Clark County?
According to EIA-861 service territory data, NorthWestern Energy LLC - (MT), Vigilante Electric Coop, Inc, Sun River Electric Coop, Inc, WAPA-- Western Area Power Administration provide electric service in Lewis and Clark County, Montana.
What was the worst power outage in Lewis and Clark County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Jun 4, 2021. It peaked at 27,788 customers without power (84.5% of the county). NOAA storm reports for that period point to severe thunderstorms.
How often does the power go out in Lewis and Clark County?
EAGLE-I has recorded 110 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 4 hr 3 min of power per year, and on 46 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. "Lewis and Clark County, MT Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/montana/lewis-and-clark-county