Power outages in Dewey County, SD
We don't have a live outage feed for the utilities serving Dewey County yet. WAPA-- Western Area Power Administration and Moreau-Grand Electric Coop Inc serve this county.
Right now
No live outage data for Dewey County yet.
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This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.i
This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.Outage map
Outage history in Dewey County
2014–2025 recordDewey County averaged 9.3 significant outages a year in 2023–2025, about typical for South Dakota counties.
In the 12 months to December 2025, there were 20. Half were over within 1.5 hours; the longest lasted 20 hours, starting November 12, 2025.
The largest on record began November 25, 2025, with 2,114 customers out at once.
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At least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.i
Half of significant outages here ended sooner than this, and half lasted longer.| Largest events (start) | Peak out | LastediHow long this area stayed at or above the significant-outage line, not how long any one home was without power. | Customer-hoursiCustomers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours. |
|---|---|---|---|
| November 25, 2025 | 2,114 | 15 minutes | 529 |
| November 14, 2025 | 2,093 | 1.5 hours | 3,140 |
| September 3, 2025 | 2,090 | 6 hours | 7,098 |
| October 29, 2025 | 1,955 | 3 hours | 4,182 |
| July 14, 2025 | 1,945 | 1 hour | 761 |
Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).i
From EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.
Cities in Dewey County
Utilities
- WAPA-- Western Area Power Administration no live feed
- Moreau-Grand Electric Coop Inc no live feed
- All South Dakota outages