Power Outages in Ziebach County, SD
Grand Electric Coop, Inc, Moreau-Grand Electric Coop Inc and West River Electric Assn Inc publish 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 24.5 hours.
Ziebach County, SD is served by 4 tracked utilities.
Cite this data
- URL
- https://massoutage.com/south-dakota/ziebach-county
- As of
- Not available
- Publisher
- MassOutage
MassOutage, "Power Outages in Ziebach County, SD". https://massoutage.com/south-dakota/ziebach-county
Grand Electric Coop, Inc, Moreau-Grand Electric Coop Inc and West River Electric Assn Inc publish 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 ~2,783 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: Grand Electric Coop, Inc, Moreau-Grand Electric Coop Inc, West River Electric Assn Inc.
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Grand Electric Coop, Inc | Live · total only | not by county | - | - | - | - | - | - |
| Moreau-Grand Electric Coop Inc | Live · total only | not by county | - | - | - | - | - | - |
| West River Electric Assn Inc | Live · total only | not by county | - | - | - | - | - | - |
| WAPA-- Western Area Power Administration | No live feed | can't see | - | - | - | - | - | - |
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Ziebach 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 (2)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 57623 | ≤11 | 0 | ≤11 | 0 |
| 57622 | ≤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 Ziebach County or any town and utility in it.
- Wind AdvisoryMODERATE
Ziebach County has been under 7 National Weather Service alerts recently, most recently a Wind Advisory on October 15, 2026.
- Wind Advisory ×4
- Freeze Warning ×2
- Dense Fog Advisory ×1
Hardest-hit cities in Ziebach County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Ziebach County went about 24.5 hours without power. Peak simultaneous outage on record reached 1,374 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 24.5 hrs.
Worst year here was 2025 (peak 1,374 customers out) · decade average 4.3 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2018 | 3 | 33 | 0.2 |
| 2019 | 9 | 32 | 0.3 |
| 2020 | 11 | 31 | 0.6 |
| 2021 | 14 | 33 | 0.5 |
| 2022 | 19 | 32 | 0.5 |
| 2023 | 16 | 32 | 0.3 |
| 2024 | 79 | 1,103 | 7.2 |
| 2025 | 99 | 1,374 | 24.5 |
Cost of power in Ziebach County
ENERGY & AI DEMAND →Estimated residential electricity price for Ziebach 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.
- West River Electric Assn Inc15.2¢18,975 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 high winds exposure · 4.3 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability very high: outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Ziebach County: FAQ
- How often does Ziebach County, SD lose power?
- Based on EAGLE-I records, Ziebach County, SD logged 99 distinct outage events in 2025, averaging about 24.5 hours without power per customer over the year.
- What was the worst power outage in Ziebach County, SD?
- The largest tracked outage peaked at 1,374 customers without power, beginning September 3, 2025 and lasting about 3h.
- Is there a power outage in Ziebach County, SD right now?
- No major outage is currently reported for Ziebach County, SD. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Ziebach County, SD?
- Tracked electric providers include Moreau-Grand Electric Coop Inc.
Outages are tracked at the county level; these ZIP codes fall within Ziebach County.
57622, 57623
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| West River Electric Assn Inc | 0.4 hrs | Live · total only | - |
| WAPA-- Western Area Power Administration | - | No live feed | - |
| Grand Electric Coop, Inc | - | Live · total only | - |
| Moreau-Grand 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/46137 and /api/v1/counties/46137/history.