Walworth County, SD Power Outages
Utilities serving Walworth County, South Dakota 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.
Walworth County on the South Dakota outage map
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- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Walworth County power outage history
Every significant outage recorded in Walworth County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 61 significant power outages in Walworth County, meaning events that left at least 1% of customers in the dark. The largest (Oct 14, 2021) came when high winds left 2,454 customers (100% of the county) without power.
From 2018 to 2025, the average customer here lost about 1 hr 40 min of power per year, less than the South Dakota average of 3 hr 46 min. That ranks 54th of 65 South Dakota counties for outage time, where 1st has the most.
October is the riskiest month: it accounted for 30% of all customer outage time from 2018 to 2025. On 42 days in that period, at least 5% of customers were out at the same time. Outage time in Walworth County has held roughly steady recently: about 1 hr 35 min per customer per year in 2022–2025, versus 1 hr 44 min in 2018–2021.
The most recent significant outage on record (Oct 2, 2025) affected 164 customers (6.9%) amid flooding.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Oct 14, 2021 | 2,454(100%) | 1 | High winds |
| 2 | Jun 4, 2017 | 2,073(87.5%) | 1 | No major storm reported |
| 3 | Sep 28, 2022 | 2,021(85.3%) | 1 | No major storm reported |
| 4 | Oct 18, 2017 | 1,777(75%) | 1 | No major storm reported |
| 5 | Nov 14, 2017 | 1,717(72.4%) | 1 | No major storm reported |
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 Walworth County?
Electric companies with service territory in Walworth County (EIA-861, 2025)
| Utility | Type | Customers (SD) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Montana-Dakota Utilities | Investor Owned | 9,554 | Not reporting | |
| Cam Wal Electric Coop, Inc | Cooperative | 2,603 | Not reporting | |
| WAPA-- Western Area Power Administration | Federal | 25 | Not reporting |
Customer counts are each utility's statewide total in South Dakota. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Walworth County outage headlines in the past week.
Nearby counties
Walworth County power outage FAQ
Is the power out in Walworth County right now?
No outages are currently reported for Walworth 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 Walworth County?
According to EIA-861 service territory data, Montana-Dakota Utilities Co, Cam Wal Electric Coop, Inc, WAPA-- Western Area Power Administration provide electric service in Walworth County, South Dakota.
What was the worst power outage in Walworth County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Oct 14, 2021. It peaked at 2,454 customers without power (100% of the county). NOAA storm reports for that period point to high winds.
How often does the power go out in Walworth County?
EAGLE-I has recorded 61 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 1 hr 40 min of power per year, and on 42 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. "Walworth County, SD Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/south-dakota/walworth-county