Dewey County, SD Power Outages
Utilities serving Dewey 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.
Dewey 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.
Dewey County power outage history
Every significant outage recorded in Dewey County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 30 significant power outages in Dewey County, meaning events that left at least 1% of customers in the dark. The largest (Nov 25, 2025) came when high winds left 2,114 customers (43.4% of the county) without power.
From 2018 to 2025, the average customer here lost about 3 hr 51 min of power per year, close to the South Dakota average of 3 hr 46 min. That ranks 35th 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 16 days in that period, at least 5% of customers were out at the same time.
The most recent significant outage on record (Dec 18, 2025) affected 246 customers (5.1%) amid high winds.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Nov 25, 2025 | 2,114(43.4%) | 1 | High winds |
| 2 | Nov 12–14, 2025 | 2,093(43%) | 3 | No major storm reported |
| 3 | Sep 3, 2025 | 2,090(43%) | 1 | Flooding |
| 4 | Oct 27–29, 2025 | 1,955(40.2%) | 3 | High winds |
| 5 | Jul 14–15, 2025 | 1,945(40%) | 2 | 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 Dewey County?
Electric companies with service territory in Dewey County (EIA-861, 2025)
| Utility | Type | Customers (SD) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Moreau-Grand Electric Coop Inc | Cooperative | 7,161 | 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 Dewey County outage headlines in the past week.
Nearby counties
Dewey County power outage FAQ
Is the power out in Dewey County right now?
No outages are currently reported for Dewey 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 Dewey County?
According to EIA-861 service territory data, Moreau-Grand Electric Coop Inc, WAPA-- Western Area Power Administration provide electric service in Dewey County, South Dakota.
What was the worst power outage in Dewey County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Nov 25, 2025. It peaked at 2,114 customers without power (43.4% of the county). NOAA storm reports for that period point to high winds.
How often does the power go out in Dewey County?
EAGLE-I has recorded 30 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 3 hr 51 min of power per year, and on 16 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. "Dewey County, SD Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/south-dakota/dewey-county