County annual report · FIPS 32031
2021 Washoe County, NV Power Outage Report
In 2021, customers in Washoe County, NV went without power for an average of 1.8 hours, a total of 440K customer-hours (Nevada average 1.7 hours). That ranks 11th worst of 15 Nevada counties and 2322nd of 2,974 nationally.
Compared with NV, the US and 2020
Coverage line is EAGLE-I's share of Nevada customers tracked each year.
Biggest outages in Washoe County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 18, 2021 00:15 | June 18, 2021 13:30 | 13h 15m | 21,246 | 48K |
| 2 | June 28, 2021 15:45 | June 30, 2021 13:45 | 1d 22h | 9,816 | 31K |
| 3 | September 9, 2021 23:15 | September 11, 2021 01:45 | 1d 2h | 9,253 | 12K |
| 4 | August 1, 2021 01:30 | August 1, 2021 12:15 | 10h 45m | 8,391 | 21K |
| 5 | June 12, 2021 08:30 | June 12, 2021 13:00 | 4h 30m | 6,903 | 7,672 |
| 6 | June 2, 2021 15:00 | June 3, 2021 03:15 | 12h 15m | 5,742 | 3,741 |
| 7 | September 11, 2021 20:30 | September 11, 2021 22:15 | 1h 45m | 5,322 | 7,984 |
| 8 | July 2, 2021 20:15 | July 3, 2021 09:00 | 12h 45m | 5,135 | 9,297 |
| 9 | June 16, 2021 20:15 | June 17, 2021 02:15 | 6h | 5,134 | 16K |
| 10 | July 17, 2021 21:15 | July 18, 2021 02:30 | 5h 15m | 5,080 | 23K |
Outage episodes by size in 2021: 196 reached 100+ customers, 37 reached 1,000+ customers, 1 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Washoe County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Sierra Pacific Power Co | 2021 | 2.7 hrs | 1.28 | 2.0 hrs | 1.03 |
| NV Energy | - | - | - | - | - |
| Plumas-Sierra Rural Elec Coop | - | - | - | - | - |
| Surprise Valley Electrification | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 97% of Nevada's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 244,311 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Washoe County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washoe County, NV annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/nevada/washoe-county