Power Outages in Day County, SD
As of October 19, 2026 11:50 UTC, no outages are reported by Otter Tail Power Co, Codington-Clark Elec Coop, Inc, Northern Electric Coop, Inc, Montana-Dakota Utilities Co and NorthWestern Energy - (SD) in Day County, SD. Lake Region Electric Assn, Inc - (SD) publishes only a system-wide total, not county figures. There is no live feed for WAPA-- Western Area Power Administration. In 2025, the average customer here lost power for about 5.4 hours.
Day County, SD is served by 7 tracked utilities.
Cite this data
- URL
- https://massoutage.com/south-dakota/day-county
- As of
- October 19, 2026 11:50 UTC
- Publisher
- MassOutage
MassOutage, "Power Outages in Day County, SD", live data as of October 19, 2026 11:50 UTC. https://massoutage.com/south-dakota/day-county
No active outages are reported by Otter Tail Power Co, Codington-Clark Elec Coop, Inc, Northern Electric Coop, Inc, Montana-Dakota Utilities Co and NorthWestern Energy - (SD) in Day County.
Lake Region Electric Assn, Inc - (SD) publishes no county-level figures.
No live feed for WAPA-- Western Area Power Administration: outages in itsservice area won't show here.
15%of this county's ~7,978 customers are served by utilities with a county-level live feed.
We can't see outages for: WAPA-- Western Area Power Administration. Their customers are not in any number on this page; check their own outage maps.
System-wide total only, no county split: Lake Region Electric Assn, Inc - (SD).
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Otter Tail Power Co | Live · county | 0 | 1,077 | 0.0% | - | - | - | |
| Codington-Clark Elec Coop, Inc | Live · county | 0 | 98 | 0.0% | - | - | - | |
| Northern Electric Coop, Inc | Live · county | 0 | 2 | 0.0% | - | - | - | |
| Lake Region Electric Assn, Inc - (SD) | Live · total only | not by county | - | - | - | - | - | - |
| Montana-Dakota Utilities Co | Live · county | 0 | - | - | - | 0 | - | |
| NorthWestern Energy - (SD) | Live · county | 0 | - | - | - | 0 | - | |
| WAPA-- Western Area Power Administration | No live feed | can't see | - | - | - | - | - | - |
Otter Tail Power Co, Codington-Clark Elec Coop, Inc, Northern Electric Coop, Inc, Montana-Dakota Utilities Co and NorthWestern Energy - (SD) reportevery town in the county on each poll, so 0 out is a real all-clear. ETRs are the utility's own estimates.
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Day Countywho rely on electricity-dependent medical equipment (ventilators, oxygen concentrators, home dialysis, powered wheelchairs, and more). HHS reports counts of 1–10 as “≤11”. Medicare only, so the full at-risk population is larger.
By ZIP code (7)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 57274 | 37 | 0 | 31 | 0 |
| 57273 | 17 | 0 | 12 | 0 |
| 57468 | ≤11 | 0 | ≤11 | 0 |
| 57422 | ≤11 | 0 | ≤11 | ≤11 |
| 57261 | ≤11 | ≤11 | ≤11 | 0 |
| 57239 | ≤11 | 0 | ≤11 | 0 |
| 57219 | ≤11 | 0 | ≤11 | 0 |
Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.
Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Day County or any town and utility in it.
No active NWS alerts for Day County right now.
Day County has been under 16 National Weather Service alerts recently, most recently a Frost Advisory on October 17, 2026.
- Dense Fog Advisory ×9
- Special Weather Statement ×4
- Frost Advisory ×3
Latest Day County, SD outage updates
A running log of how this outage has changed, updated automatically as utilities report in.
- RESOLVED
Power restored after 10m
- OUTAGE BEGAN
Outage began: 162 customers out (4.0% of the county)
- RESOLVED
Power restored after 14m
- OUTAGE BEGAN
Outage began: 245 customers out (6.0% of the county)
Hardest-hit cities in Day County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Day County went about 5.4 hours without power. Peak simultaneous outage on record reached 2,407 customers.
The US EIA reports South Dakota utilities averaged 4.7 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 5.4 hrs.
Worst year here was 2023 (peak 1,032 customers out) · decade average 8.5 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2019 | 49 | 589 | 2.6 |
| 2020 | 129 | 571 | 2.3 |
| 2021 | 110 | 2,014 | 2.9 |
| 2022 | 171 | 2,407 | 11.5 |
| 2023 | 145 | 1,032 | 29.2 |
| 2024 | 162 | 971 | 5.7 |
| 2025 | 157 | 1,447 | 5.4 |
Cost of power in Day County
ENERGY & AI DEMAND →Estimated residential electricity price for Day County, customer-weighted across the utilities serving it (US EIA, 2025). Retail prices aren't published at the county level; this is a derived estimate.
- NorthWestern Energy - (SD)13.4¢51,787 cust
- Otter Tail Power Co11.4¢9,094 cust
- Montana-Dakota Utilities Co13.0¢6,348 cust
- Northern Electric Coop, Inc11.4¢5,823 cust
Weighted by each utility's residential customer count (utilities report customers at the state level; a per-county share isn't published). Rising retail prices track a national demand surge; see energy & the data-center boom.
Relatively Moderate ice storms exposure · 8.5 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability relatively high: outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Day County: FAQ
- How often does Day County, SD lose power?
- Based on EAGLE-I records, Day County, SD logged 157 distinct outage events in 2025, averaging about 5.4 hours without power per customer over the year.
- What was the worst power outage in Day County, SD?
- The largest tracked outage peaked at 2,407 customers without power, beginning April 7, 2022 and lasting about 3h 15m.
- Is there a power outage in Day County, SD right now?
- No major outage is currently reported for Day County, SD. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Day County, SD?
- Tracked electric providers include NorthWestern Energy - (SD), Otter Tail Power Co.
Outages are tracked at the county level; these ZIP codes fall within Day County.
57219, 57239, 57261, 57273, 57274, 57422, 57468
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Otter Tail Power Co | 8.9 hrs | Live · county | - |
| Montana-Dakota Utilities Co | 2.4 hrs | Live · county | - |
| NorthWestern Energy - (SD) | 2.0 hrs | Live · county | - |
| Northern Electric Coop, Inc | 1.2 hrs | Live · county | - |
| WAPA-- Western Area Power Administration | - | No live feed | - |
| Codington-Clark Elec Coop, Inc | - | Live · county | - |
| Lake Region Electric Assn, Inc - (SD) | - | Live · total only | - |
Data from DOE/ORNL ODIN, DOE EAGLE-I, EIA Form 861 (utility reliability), EIA electricity retail prices and FEMA National Risk Index, every source we read. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of South Dakota customers). Machine-readable data: /api/v1/counties/46037 and /api/v1/counties/46037/history.