Power Outages in Big Horn County, MT
Powder River Energy Corp has not reported outages here, but it only publishesactive outages, so that isn't a confirmed all-clear. NorthWestern Energy LLC - (MT) and Yellowstone Valley Elec Co-op publish only a system-wide total, not county figures. There is no live feed for Big Horn County Elec Coop, Inc, Big Horn Rural Electric Co, Mid-Yellowstone Elec Coop, Inc, Tongue River Electric Coop Inc and WAPA-- Western Area Power Administration. In 2025, the average customer here lost power for about 1.7 hours.
Big Horn County, MT is served by 8 tracked utilities.
Cite this data
- URL
- https://massoutage.com/montana/big-horn-county
- As of
- Not available
- Publisher
- MassOutage
MassOutage, "Power Outages in Big Horn County, MT". https://massoutage.com/montana/big-horn-county
Powder River Energy Corp only appearsin feeds while reporting outages, so no report isn't a confirmed all-clear.
NorthWestern Energy LLC - (MT) and Yellowstone Valley Elec Co-op publish no county-level figures.
No live feed for Big Horn County Elec Coop, Inc, Big Horn Rural Electric Co, Mid-Yellowstone Elec Coop, Inc, Tongue River Electric Coop Inc and WAPA-- Western Area Power Administration: outages in theirservice area won't show here.
0.0%of this county's ~6,865 customers are served by utilities with a county-level live feed.
We can't see outages for: Big Horn County Elec Coop, Inc, Big Horn Rural Electric Co, Mid-Yellowstone Elec Coop, Inc, Tongue River Electric Coop Inc, 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: Powder River Energy Corp. Zero here is not a confirmed all-clear.
System-wide total only, no county split: NorthWestern Energy LLC - (MT), Yellowstone Valley Elec Co-op.
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | Live · total only | not by county | - | - | - | - | - | - |
| Powder River Energy Corp | Outages only | none reported | - | - | - | - | - | - |
| Yellowstone Valley Elec Co-op | Live · total only | not by county | - | - | - | - | - | - |
| Big Horn County Elec Coop, Inc | No live feed | can't see | - | - | - | - | - | - |
| Big Horn Rural Electric Co | No live feed | can't see | - | - | - | - | - | - |
| Mid-Yellowstone Elec Coop, Inc | No live feed | can't see | - | - | - | - | - | - |
| Tongue River Electric Coop Inc | No live feed | can't see | - | - | - | - | - | - |
| WAPA-- Western Area Power Administration | No live feed | can't see | - | - | - | - | - | - |
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Big Horn 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 (10)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 59034 | 85 | 0 | 75 | 0 |
| 59022 | 17 | 0 | 14 | ≤11 |
| 59050 | 16 | 0 | 15 | 0 |
| 59089 | ≤11 | 0 | ≤11 | 0 |
| 59075 | ≤11 | 0 | ≤11 | 0 |
| 59066 | ≤11 | 0 | ≤11 | 0 |
| 59035 | ≤11 | 0 | ≤11 | 0 |
| 59031 | ≤11 | 0 | ≤11 | 0 |
| 59025 | ≤11 | 0 | ≤11 | 0 |
| 59016 | ≤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 Big Horn County or any town and utility in it.
No active NWS alerts for Big Horn County right now.
Big Horn County has been under 13 National Weather Service alerts recently, most recently a Special Weather Statement on September 22, 2026.
- Flood Watch ×8
- Special Weather Statement ×3
- Dense Fog Advisory ×2
Latest Big Horn County, MT outage updates
A running log of how this outage has changed, updated automatically as utilities report in.
- RESOLVED
Power restored after 1h 59m
- OUTAGE BEGAN
Outage began: 976 customers out (14% of the county)
Hardest-hit cities in Big Horn County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Big Horn County went about 1.7 hours without power. Peak simultaneous outage on record reached 1,779 customers.
The US EIA reports Montana utilities averaged 4.8 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 1.7 hrs.
Worst year here was 2024 (peak 102 customers out) · decade average 1.1 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2019 | 77 | 26 | 0.1 |
| 2020 | 94 | 82 | 0.3 |
| 2021 | 69 | 105 | 0.5 |
| 2022 | 46 | 1,778 | 1.9 |
| 2023 | 71 | 187 | 0.4 |
| 2024 | 75 | 102 | 2.6 |
| 2025 | 76 | 1,779 | 1.7 |
Cost of power in Big Horn County
ENERGY & AI DEMAND →Estimated residential electricity price for Big Horn 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 LLC - (MT)14.4¢333,711 cust
- Yellowstone Valley Elec Co-op14.2¢21,471 cust
- Powder River Energy Corp13.2¢51 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 High high winds exposure · 1.1 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 Big Horn County: FAQ
- How often does Big Horn County, MT lose power?
- Based on EAGLE-I records, Big Horn County, MT logged 76 distinct outage events in 2025, averaging about 1.7 hours without power per customer over the year.
- What was the worst power outage in Big Horn County, MT?
- The largest tracked outage peaked at 1,779 customers without power, beginning April 17, 2025 and lasting about 2d 17h.
- Is there a power outage in Big Horn County, MT right now?
- No major outage is currently reported for Big Horn County, MT. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Big Horn County, MT?
- Tracked electric providers include NorthWestern Energy LLC - (MT), Powder River Energy Corp.
Outages are tracked at the county level; these ZIP codes fall within Big Horn County.
59016, 59022, 59025, 59031, 59034, 59035, 59050, 59064, 59066, 59075, 59089
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2.1 hrs | Live · total only | - |
| Powder River Energy Corp | 9.5 hrs | Outages only | - |
| WAPA-- Western Area Power Administration | - | No live feed | - |
| Tongue River Electric Coop Inc | - | No live feed | - |
| Big Horn Rural Electric Co | - | No live feed | - |
| Yellowstone Valley Elec Co-op | - | Live · total only | - |
| Mid-Yellowstone Elec Coop, Inc | - | No live feed | - |
| Big Horn County Elec Coop, Inc | - | No live feed | - |
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 Montana customers). Machine-readable data: /api/v1/counties/30003 and /api/v1/counties/30003/history.