Corson County, SD Power Outages
Utilities serving Corson 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.
Corson County on the South Dakota outage map
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- Moderate
- Major
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- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Corson County power outage history
Every significant outage recorded in Corson County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 39 significant power outages in Corson County, meaning events that left at least 1% of customers in the dark. The largest (Nov 27, 2024) came when a winter storm left 281 customers (14.2% of the county) without power.
From 2018 to 2025, the average customer here lost about 52 min of power per year, less than the South Dakota average of 3 hr 46 min. That ranks 59th of 65 South Dakota counties for outage time, where 1st has the most.
July is the riskiest month: it accounted for 23% of all customer outage time from 2018 to 2025. On 25 days in that period, at least 5% of customers were out at the same time. Outage time in Corson County has risen recently: about 1 hr 29 min per customer per year in 2022–2025, versus 15 min in 2018–2021.
The most recent significant outage on record (Dec 2, 2025) affected 63 customers (3.2%).
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Nov 27, 2024 | 281(14.2%) | 1 | Winter storm |
| 2 | Jul 14–15, 2024 | 224(11.3%) | 2 | Severe thunderstorms |
| 3 | Nov 13, 2024 | 209(10.6%) | 1 | No major storm reported |
| 4 | Sep 22, 2024 | 207(10.5%) | 1 | No major storm reported |
| 5 | Aug 19–21, 2025 | 201(10.2%) | 3 | Flooding |
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 Corson County?
Electric companies with service territory in Corson County (EIA-861, 2025)
| Utility | Type | Customers (SD) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Montana-Dakota Utilities | Investor Owned | 9,554 | Not reporting | |
| Moreau-Grand Electric Coop Inc | Cooperative | 7,161 | Not reporting | |
| Grand Electric Coop, Inc | Cooperative | 5,257 | Not reporting | |
| City of McLaughlin - (SD) | Municipal | 334 | 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 Corson County outage headlines in the past week.
Corson County power outage FAQ
Is the power out in Corson County right now?
No outages are currently reported for Corson 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 Corson County?
According to EIA-861 service territory data, Montana-Dakota Utilities Co, Moreau-Grand Electric Coop Inc, Grand Electric Coop, Inc, City of McLaughlin - (SD) provide electric service in Corson County, South Dakota.
What was the worst power outage in Corson County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Nov 27, 2024. It peaked at 281 customers without power (14.2% of the county). NOAA storm reports for that period point to winter storm.
How often does the power go out in Corson County?
EAGLE-I has recorded 39 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 52 min of power per year, and on 25 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. "Corson County, SD Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/south-dakota/corson-county