Big Horn County, WY Power Outages
As of Nov 3, 2:00 AM EST, no power outages were reported in Big Horn County, Wyoming by PacifiCorp.
Big Horn County on the Wyoming outage map
- Normal
- Minor
- Moderate
- Major
- Severe
- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Big Horn County power outage history
Every significant outage recorded in Big Horn County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 87 significant power outages in Big Horn County, meaning events that left at least 1% of customers in the dark. The largest (Jul 9–10, 2021) came when hail and lightning left 2,303 customers (58.6% of the county) without power.
From 2018 to 2025, the average customer here lost about 2 hr 59 min of power per year, more than the Wyoming average of 2 hr 19 min. That ranks 10th of 23 Wyoming counties for outage time, where 1st has the most.
June is the riskiest month: it accounted for 19% of all customer outage time from 2018 to 2025. On 64 days in that period, at least 5% of customers were out at the same time. Outage time in Big Horn County has held roughly steady recently: about 2 hr 54 min per customer per year in 2022–2025, versus 3 hr 4 min in 2018–2021.
The most recent significant outage on record (Nov 19, 2025) affected 1,675 customers (42.6%).
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Jul 9–10, 2021 | 2,303(58.6%) | 2 | Hail and lightning |
| 2 | Aug 1, 2020 | 2,279(58%) | 1 | Hail and lightning |
| 3 | Apr 6–9, 2021 | 1,771(45.1%) | 4 | High winds |
| 4 | Oct 15, 2018 | 1,765(44.9%) | 1 | Winter storm |
| 5 | Nov 19, 2025 | 1,675(42.6%) | 1 | No major storm reported |
Hours without power per customer, by year
When outages happen
Source: DOE/ORNL EAGLE-I recorded electricity outages, 2014–2025 (CC BY 4.0), with likely causes from the NOAA NCEI Storm Events Database. EAGLE-I coverage was partial before 2018, so averages use 2018–2025. Peak counts are the highest number of customers out at one time.
Who provides electricity in Big Horn County?
Electric companies with service territory in Big Horn County (EIA-861, 2025)
| Utility | Type | Customers (WY) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| PacifiCorp (Rocky Mountain Power / Pacific Power) | Investor Owned | 148,217 | Reporting | |
| High Plains Power Inc | Cooperative | 14,038 | Not reporting | |
| Big Horn Rural Electric Co | Cooperative | 4,136 | Not reporting | |
| Garland Light & Power Company | Cooperative | 2,361 | Not reporting | |
| Town of Basin - (WY) | Municipal | 732 | Not reporting | |
| City of Deaver - (WY) | Municipal | 92 | Not reporting | |
| WAPA-- Western Area Power Administration | Federal | 6 | Not reporting |
Customer counts are each utility's statewide total in Wyoming. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Big Horn County outage headlines in the past week.
Big Horn County power outage FAQ
Is the power out in Big Horn County right now?
No outages are currently reported for Big Horn County by participating utilities. If your power is out, report it to your electric company.
Which electric company serves Big Horn County?
According to EIA-861 service territory data, PacifiCorp, High Plains Power Inc, Big Horn Rural Electric Co, Garland Light & Power Company and 3 others provide electric service in Big Horn County, Wyoming.
What was the worst power outage in Big Horn County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Jul 9–10, 2021. It peaked at 2,303 customers without power (58.6% of the county). NOAA storm reports for that period point to hail and lightning.
How often does the power go out in Big Horn County?
EAGLE-I has recorded 87 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 2 hr 59 min of power per year, and on 64 days at least 5% of customers were out at once.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Underlying government data is public domain.
PowerOutageTracker.com. "Big Horn County, WY Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/wyoming/big-horn-county