Power Outages in Walworth County, SD
Montana-Dakota Utilities Co has not reported outages here, but it only publishesactive outages, so that isn't a confirmed all-clear. Cam Wal Electric Coop, Inc 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 2.3 hours.
Walworth County, SD is served by 3 tracked utilities.
Cite this data
- URL
- https://massoutage.com/south-dakota/walworth-county
- As of
- Not available
- Publisher
- MassOutage
MassOutage, "Power Outages in Walworth County, SD". https://massoutage.com/south-dakota/walworth-county
Montana-Dakota Utilities Co only appearsin feeds while reporting outages, so no report isn't a confirmed all-clear.
Cam Wal Electric Coop, Inc publishes no county-level figures.
No live feed for WAPA-- Western Area Power Administration: outages in itsservice area won't show here.
0.0%of this county's ~5,439 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.
Only visible while reporting outages: Montana-Dakota Utilities Co. Zero here is not a confirmed all-clear.
System-wide total only, no county split: Cam Wal Electric Coop, Inc.
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Cam Wal Electric Coop, Inc | Live · total only | not by county | - | - | - | - | - | - |
| Montana-Dakota Utilities Co | Outages only | none reported | - | - | - | - | - | - |
| WAPA-- Western Area Power Administration | No live feed | can't see | - | - | - | - | - | - |
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Walworth 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 (3)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 57601 | 34 | 0 | 28 | ≤11 |
| 57472 | 16 | 0 | ≤11 | ≤11 |
| 57452 | ≤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 Walworth County or any town and utility in it.
- Wind AdvisoryMODERATE
Walworth County has been under 26 National Weather Service alerts recently, most recently a Wind Advisory on October 15, 2026.
- Dense Fog Advisory ×14
- Wind Advisory ×6
- Freeze Warning ×3
- Special Weather Statement ×3
Latest Walworth County, SD outage updates
A running log of how this outage has changed, updated automatically as utilities report in.
- RESOLVED
Power restored after 15m
- OUTAGE BEGAN
Outage began: 895 customers out (38% of the county)
- RESOLVED
Power restored after 20m
- OUTAGE BEGAN
Outage began: 880 customers out (37% of the county)
Hardest-hit cities in Walworth County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Walworth County went about 2.3 hours without power. Peak simultaneous outage on record reached 2,370 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 2.3 hrs.
Worst year here was 2017 (peak 2,073 customers out) · decade average 1.8 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2017 | 35 | 2,073 | 3.3 |
| 2018 | 24 | 641 | 1.2 |
| 2019 | 21 | 1,040 | 1.9 |
| 2020 | 20 | 1,025 | 0.6 |
| 2021 | 26 | 2,370 | 3.2 |
| 2022 | 36 | 2,021 | 2.6 |
| 2023 | 28 | 771 | 1.1 |
| 2024 | 32 | 305 | 0.4 |
| 2025 | 43 | 721 | 2.3 |
Cost of power in Walworth County
ENERGY & AI DEMAND →Estimated residential electricity price for Walworth 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.
- Montana-Dakota Utilities Co13.0¢6,348 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 winter weather exposure · 1.8 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 Walworth County: FAQ
- How often does Walworth County, SD lose power?
- Based on EAGLE-I records, Walworth County, SD logged 43 distinct outage events in 2025, averaging about 2.3 hours without power per customer over the year.
- What was the worst power outage in Walworth County, SD?
- The largest tracked outage peaked at 2,370 customers without power, beginning October 14, 2021 and lasting about 5h 15m.
- Is there a power outage in Walworth County, SD right now?
- No major outage is currently reported for Walworth County, SD. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Walworth County, SD?
- Tracked electric providers include Montana-Dakota Utilities Co.
Outages are tracked at the county level; these ZIP codes fall within Walworth County.
57420, 57452, 57472, 57631
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Montana-Dakota Utilities Co | 2.4 hrs | Outages only | - |
| WAPA-- Western Area Power Administration | - | No live feed | - |
| Cam Wal Electric Coop, Inc | - | 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/46129 and /api/v1/counties/46129/history.