County annual report · FIPS 32031
2018 Washoe County, NV Power Outage Report
In 2018, customers in Washoe County, NV went without power for an average of 2.0 hours, a total of 489K customer-hours (Nevada average 1.7 hours). That ranks 8th worst of 15 Nevada counties and 1873rd of 2,798 nationally.
Compared with NV, the US and 2017
Coverage line is EAGLE-I's share of Nevada customers tracked each year.
Biggest outages in Washoe County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 25, 2018 03:15 | December 25, 2018 14:00 | 10h 45m | 9,054 | 31K |
| 2 | March 3, 2018 18:00 | March 4, 2018 02:00 | 8h | 8,911 | 14K |
| 3 | April 16, 2018 17:00 | April 16, 2018 20:30 | 3h 30m | 8,835 | 12K |
| 4 | October 27, 2018 22:00 | October 28, 2018 00:00 | 2h | 8,777 | 13K |
| 5 | July 21, 2018 19:45 | July 23, 2018 10:45 | 1d 15h | 6,221 | 10K |
| 6 | October 3, 2018 16:00 | October 4, 2018 01:15 | 9h 15m | 6,159 | 6,575 |
| 7 | July 11, 2018 15:30 | July 12, 2018 00:45 | 9h 15m | 5,768 | 8,680 |
| 8 | June 26, 2018 01:45 | June 26, 2018 04:30 | 2h 45m | 5,673 | 12K |
| 9 | November 22, 2018 04:00 | November 23, 2018 03:15 | 23h 15m | 5,620 | 13K |
| 10 | December 26, 2018 04:30 | December 26, 2018 07:45 | 3h 15m | 5,448 | 5,266 |
Outage episodes by size in 2018: 189 reached 100+ customers, 57 reached 1,000+ customers, 0 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 2018, 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 | 2018 | 2.7 hrs | 1.70 | 2.7 hrs | 1.70 |
| 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 95% of Nevada's customers in 2018; 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, 2018, 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/2018/nevada/washoe-county