Power Out Map
– 0 customers out in Wyoming

Power outage history

Wyoming

2.2hours

without power for the average customer in a typical year, 2018–2025. 47th of 51.

Largest outage on record Outage, November 13, 2025 61,908 customers out · 18% of the state
Electricity customers 336,226 Across 23 counties
Worst well-recorded year 2025 3.3 hours without power, average customer

County by county

Where Wyoming goes dark

Hours without power for the average customer in a typical year. Hover a county; click to open it.

Fewer hours64+ h / yr

Most hours without power

  1. 1Crook18 h
  2. 2Converse7.5 h
  3. 3Weston6.8 h
  4. 4Johnson5.5 h
  5. 5Sublette4.3 h
  6. 6Niobrara3.8 h
  7. 7Campbell3.3 h
  8. 8Albany3.3 h
  9. 9Carbon3.0 h
  10. 10Big Horn3.0 h

Most reliable

  1. 1Teton0.9 h
  2. 2Uinta0.9 h
  3. 3Fremont1.0 h
  4. 4Laramie1.0 h
  5. 5Lincoln1.4 h

Year by year

Hours in the dark, statewide

0 2 4 6 8 ’15 ’16 ’17 1.1 ’18 1.3 ’19 3.3 ’20 2.1 ’21 2.3 ’22 1.9 ’23 2.2 ’24 3.3 ’25 US 6.6

The record

Wyoming's largest outages

Statewide events with at least 2% of customers, or 25,000, out at once, by peak.

BeganStormPeak outShare
Nov 13, 2025 No storm report 61,908 18.4%

Every county

All 23 counties

CountyHours / yrMajor outages since 2018Customers
Crook 18 56 4,545
Converse 7.5 30 7,624
Weston 6.8 46 3,933
Johnson 5.5 31 5,448
Sublette 4.3 27 5,123
Niobrara 3.8 14 1,259
Campbell 3.3 4 28,060
Albany 3.3 20 23,303
Carbon 3.0 8 10,767
Big Horn 3.0 30 3,930
Sheridan 2.5 8 17,618
Sweetwater 2.4 13 25,475
Platte 2.3 3 4,390
Hot Springs 2.2 16 2,310
Natrona 1.6 6 47,992
Park 1.5 3 14,005
Washakie 1.4 9 2,958
Lincoln 1.4 6 12,820
Laramie 1.0 2 52,987
Fremont 1.0 8 26,823
Uinta 0.9 5 12,368
Teton 0.9 0 18,592
Goshen – 0 3,896

Who keeps the lights on

Utilities in Wyoming

Reliability and residential price as reported to the EIA for the latest year. Outage minutes include major storm days.

UtilityTypeOutage min / yrExcl. major storms¢/kWhCustomers
PacifiCorp Investor Owned 195 91 15.1 119k
Cheyenne Light Fuel & Power Investor Owned 54 38 17.3 44k
Lower Valley Energy Inc Cooperative – – 7.0 23k
Powder River Energy Corp Cooperative 571 271 12.2 16k
Montana-Dakota Utilities Co Investor Owned 354 134 12.0 15k
City of Gillette Municipal – – 12.9 14k
High Plains Power Inc Cooperative 320 263 14.2 13k
High West Energy, Inc Cooperative – – 14.7 5.7k
Black Hills Power, Inc. Investor Owned 68 13 13.8 2.2k