Power Outages in Johnson County, WY
Montana-Dakota Utilities Co and PacifiCorp have not reported outages here, but they only publishactive outages, so that isn't a confirmed all-clear. Powder River Energy Corp publishes only a system-wide total, not county figures. There is no live feed for Big Horn Rural Electric Co and High Plains Power Inc. In 2025, the average customer here lost power for about 9.4 hours.
Johnson County, WY is served by 5 tracked utilities.
Cite this data
- URL
- https://massoutage.com/wyoming/johnson-county
- As of
- Not available
- Publisher
- MassOutage
MassOutage, "Power Outages in Johnson County, WY". https://massoutage.com/wyoming/johnson-county
Montana-Dakota Utilities Co and PacifiCorp only appearin feeds while reporting outages, so no report isn't a confirmed all-clear.
Powder River Energy Corp publishes no county-level figures.
No live feed for Big Horn Rural Electric Co and High Plains Power Inc: outages in theirservice area won't show here.
0.0%of this county's ~6,785 customers are served by utilities with a county-level live feed.
We can't see outages for: Big Horn Rural Electric Co, High Plains Power Inc. Their customers are not in any number on this page; check their own outage maps.
Only visible while reporting outages: Montana-Dakota Utilities Co, PacifiCorp. Zero here is not a confirmed all-clear.
System-wide total only, no county split: Powder River Energy Corp.
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Montana-Dakota Utilities Co | Outages only | none reported | - | - | - | - | - | - |
| PacifiCorp | Outages only | none reported | - | - | - | - | - | - |
| Powder River Energy Corp | Live · total only | not by county | - | - | - | - | - | - |
| Big Horn Rural Electric Co | No live feed | can't see | - | - | - | - | - | - |
| High Plains Power Inc | No live feed | can't see | - | - | - | - | - | - |
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Johnson 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 |
|---|---|---|---|---|
| 82834 | 181 | ≤11 | 166 | ≤11 |
| 82639 | 13 | ≤11 | 13 | 0 |
| 82640 | ≤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 Johnson County or any town and utility in it.
No active NWS alerts for Johnson County right now.
Johnson County has been under 22 National Weather Service alerts recently, most recently a Freeze Warning on October 16, 2026.
- Flood Watch ×7
- Red Flag Warning ×5
- Special Weather Statement ×3
- Freeze Warning ×2
- Fire Weather Watch ×2
- Hydrologic Outlook ×2
Hardest-hit cities in Johnson County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Johnson County went about 9.4 hours without power. Peak simultaneous outage on record reached 5,448 customers.
The US EIA reports Wyoming utilities averaged 4.4 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 9.4 hrs.
Worst year here was 2020 (peak 2,053 customers out) · decade average 5.0 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2017 | 67 | 471 | 0.3 |
| 2018 | 109 | 3,638 | 3.4 |
| 2019 | 397 | 683 | 1.7 |
| 2020 | 312 | 2,053 | 9.8 |
| 2021 | 278 | 1,236 | 3.6 |
| 2022 | 265 | 3,889 | 5.4 |
| 2023 | 299 | 851 | 4.4 |
| 2024 | 342 | 1,290 | 7.0 |
| 2025 | 317 | 5,448 | 9.4 |
Cost of power in Johnson County
ENERGY & AI DEMAND →Estimated residential electricity price for Johnson 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.
- PacifiCorp15.1¢118,517 cust
- Powder River Energy Corp12.2¢15,548 cust
- Montana-Dakota Utilities Co12.0¢14,993 cust
- High Plains Power Inc14.2¢12,868 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 · 5.0 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability relatively moderate: outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Johnson County: FAQ
- How often does Johnson County, WY lose power?
- Based on EAGLE-I records, Johnson County, WY logged 317 distinct outage events in 2025, averaging about 9.4 hours without power per customer over the year.
- What was the worst power outage in Johnson County, WY?
- The largest tracked outage peaked at 5,448 customers without power, beginning November 13, 2025 and lasting about 13h 15m.
- Is there a power outage in Johnson County, WY right now?
- No major outage is currently reported for Johnson County, WY. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Johnson County, WY?
- Tracked electric providers include Montana-Dakota Utilities Co, PacifiCorp, Powder River Energy Corp.
Outages are tracked at the county level; these ZIP codes fall within Johnson County.
82639, 82640, 82834
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| PacifiCorp | 3.5 hrs | Outages only | - |
| Montana-Dakota Utilities Co | 2.4 hrs | Outages only | - |
| High Plains Power Inc | 5.3 hrs | No live feed | - |
| Powder River Energy Corp | 9.5 hrs | Live · total only | - |
| Big Horn Rural Electric Co | - | 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 Wyoming customers). Machine-readable data: /api/v1/counties/56019 and /api/v1/counties/56019/history.