Power outages in Nevada
In 2025, the average Nevada customer was without power for 2.1 hours (127.8 minutes). That is well below the US median of 258.7 minutes (4.3 hours) across the 50 states compared.
Trend
Outage time rose from 1.2 hours in 2020 to a peak of 3.3 hours in 2022, then settled between 2.3 and 2.6 hours in 2023 and 2024 and fell to 2.1 hours in 2025. 2022 was the worst year at 3.3 hours.
Utilities in 2025
Overton Power District No 5 had the lowest SAIDI in 2025 at 13.4 minutes (0.2 hours). Sierra Pacific Power Co had the highest at 288.1 minutes (4.8 hours).
| Utility | Customers | Hours / yr | Interruptions |
|---|---|---|---|
| Sierra Pacific Power Co | 400,458 | 4.8 | 2.5 |
| Valley Electric Assn, Inc | 24,626 | 1.5 | 0.8 |
| Nevada Power Co | 1,113,426 | 1.2 | 0.7 |
| Overton Power District No 5 | 18,963 | 0.2 | 0.2 |
What this means for backup power
For everyday outages, enter 1.9 hours in the calculator, which is the average length of one interruption. To ride out a year like 2022, size for 3.3 hours, which is all of that year's outage hours added together.
FAQ
How long are Nevada power outages in a typical year?
In 2025, the average customer had 127.8 minutes (2.1 hours) without power in total. Customers had about 1.1 interruptions on average, and one outage lasted about 1.9 hours.
Is SAIDI the length of one outage?
No. SAIDI is the total outage time per customer over a whole year. In Nevada, one outage lasts about 1.9 hours on average.
How much backup power should I plan for?
For everyday outages, plan around 1.9 hours, the average length of one interruption. To cover a year as bad as 2022, plan for 3.3 hours of total outage time.
Utility pages
Source: U.S. EIA Form 861 Reliability file. Data snapshot 2026-11-05.