Power Outages in Wyoming by City
2024 was a good year for the Wyoming grid: 138 minutes without power per customer, against a 2019–2023 average of 184.
Power outage record for Wyoming
Worst year: 2020. Includes major storm days. Source: EIA Form 861.
- 2024: Wyoming electric customers averaged 1 outages and 138 minutes (2.3 hours) without power. Average across all reporting US utilities: 611 minutes. That makes Wyoming 9th of 50 states (1 = fewest outage minutes).
- Storm days vs. ordinary days: leaving out major event days, the figure drops to 109 minutes (US 126). Most outage time came from everyday faults rather than a few big storms.
- Six-year record: the worst year was 2020 (290 minutes), the best 2023 (127). 2024 was well below the 2019–2023 average of 184 minutes.
- Largest utilities: PacifiCorp, 147,268 customers, 92 minutes; Cheyenne Light Fuel & Power, 44,112 customers, 33 minutes; Powder River Energy Corp, 27,532 customers, 496 minutes.
- Spread between utilities: among 3 utilities with 25,000+ customers, Cheyenne Light Fuel & Power had the least outage time (33 minutes) and Powder River Energy Corp the most (496 minutes). Source: EIA Form 861 reliability data, 2019–2024
- Storm record since 2015: 13,070 NOAA storm reports in Wyoming, led by high wind 5,387, winter storm 2,234, hail 1,864. Power outages are named in 45 storm episodes. Source: NOAA Storm Events Database
- March 14, 2020, Central Laramie County (freezing fog): “At its peak, up to 30,000 residents were without power.” Source: NOAA Storm Events Database
- December 18, 2016, Natrona County Lower Elevations (high wind): “The strong winds also knocked out power to close to 5000 people in Casper when the winds were strongest.” Source: NOAA Storm Events Database
- December 17, 2025, Lander Foothills (high wind): “The high wind resulted in a power outage in Lander to around 2500 customers for several hours.” Source: NOAA Storm Events Database
PacifiCorp serves the most customers (147,268). Source: EIA Form 861.
Wyoming ranks 3rd of 7 here (1 = fewest minutes). Source: EIA Form 861.
March had the most (7). Source: NOAA Storm Events Database.
Checked September 2026.
Who to call in Wyoming, city by city
4 Wyoming cities on this site and the electric utility for each. What to do while you wait is in our power outage guide.
- Cheyenne Black Hills Energy
- Casper Rocky Mountain Power
- Gillette City of Gillette Utilities
- Laramie Rocky Mountain Power
Frequently asked questions
Is there a power outage in Wyoming right now?
Not on this site: no reports from Wyoming in the last 24 hours.
How long are power outages in Wyoming?
In 2024 the average Wyoming electric customer was without power for 138 minutes (2.3 hours) across 1 interruptions, according to EIA Form 861 data. The average across all reporting US utilities was 611 minutes.
Which Wyoming utility had the most outage time in 2024?
Among utilities with at least 25,000 customers, Powder River Energy Corp reported the most: 496 minutes per customer. Cheyenne Light Fuel & Power reported the least.
When do storms knock out power in Wyoming?
NOAA storm reports name power outages in 45 storm episodes in Wyoming since 2015, most often in March (7 episodes).
Report counts are user-submitted; other figures name their official source. How our data works