Wyoming power outages

Live outages across Wyoming from PacifiCorp (Pacific Power / Rocky Mountain Power), updated every 10 minutes. 3 counties have customers without power right now.

Right now

Normal: scattered outages

Normal: fewer than 0.1% of customers out. Elevated: 0.1% or more. Major outage: 1% or more.

43customers without power

A customer is one electric account, usually one home or business, not one person. Utilities count outages this way.

0.03% of 145,260 customersUpdated 7 min ago

We check every utility's outage data every 10 minutes. Each utility updates its own map on its own schedule, usually every 5 to 15 minutes.

PacifiCorp (Pacific Power / Rocky Mountain Power)43 / 145,260

NorthWestern Energy LLC - (MT)no live feed

This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.

Serves part of the state, per federal utility records

From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.

. Check its own outage map.

Montana-Dakota Utilities Cono live feed

This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.

Serves part of the state, per federal utility records

From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.

. Check its own outage map.

Black Hills Power, Inc.no live feed

This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.

Serves part of the state, per federal utility records

From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.

. Check its own outage map.

Outage map

<0.01%0.01%0.1%1%+ outno live feed

Color shows the share of each county's customers without power right now.

Counties with the most outages

3 counties with live data

County	Out	Customers i A customer is one electric account, usually one home or business, not one person. Utilities count outages this way.	% out i Customers without power divided by all the customers the utility serves in this area.
Big Horn County	31	–	–
Natrona County	11	–	–
Converse County	1	–	–

Outage history in Wyoming

2014–2025 record

Wyoming averaged 10 significant outages a year in 2023–2025, about typical for states.

In the 12 months to December 2025, there were 12. Half were over within 1.5 hours; the longest lasted 15 hours, starting August 25, 2025.

The largest on record began November 13, 2025, with 94,660 customers out at once.

10significant outages a year (2023–2025)

At least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.

1.5 hourstypical (median) length

Half of significant outages here ended sooner than this, and half lasted longer.

32 hourslongest on record (September 2020)

94,660most customers out at once

Largest events (start)	Peak out	Lasted i How long this area stayed at or above the significant-outage line, not how long any one home was without power.	Customer-hours i Customers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours.
November 13, 2025	94,660	6 hours	285,485
February 11, 2016	34,371	45 minutes	25,778
March 15, 2020	19,371	6 hours	39,707
September 8, 2020	13,201	32 hours	183,157
May 18, 2017	12,401	15 minutes	3,100

Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).

From EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.

Counties in Wyoming

Utilities

PacifiCorp (Pacific Power / Rocky Mountain Power)
NorthWestern Energy LLC - (MT) no live feed
Montana-Dakota Utilities Co no live feed
Black Hills Power, Inc. no live feed
Cheyenne Light Fuel & Power no live feed
Lower Valley Energy Inc no live feed
Yampa Valley Electric Assn Inc no live feed
Powder River Energy Corp no live feed
Fall River Rural Elec Coop Inc no live feed