County annual report · FIPS 32031
2015 Washoe County, NV Power Outage Report
In 2015, customers in Washoe County, NV went without power for an average of 2.6 hours, a total of 633K customer-hours (Nevada average 1.0 hours). That ranks 6th worst of 15 Nevada counties and 1030th of 2,484 nationally.
Compared with NV, the US
Coverage line is EAGLE-I's share of Nevada customers tracked each year.
Biggest outages in Washoe County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 9, 2015 17:15 | November 13, 2015 09:15 | 3d 16h | 35,926 | 406K |
| 2 | August 11, 2015 16:45 | August 12, 2015 09:30 | 16h 45m | 12,052 | 6,019 |
| 3 | July 7, 2015 03:15 | July 10, 2015 06:15 | 3d 3h | 10,601 | 31K |
| 4 | June 27, 2015 21:00 | June 29, 2015 06:00 | 1d 9h | 8,866 | 22K |
| 5 | August 8, 2015 16:15 | August 8, 2015 21:15 | 5h | 7,229 | 4,347 |
| 6 | June 22, 2015 15:00 | June 27, 2015 00:45 | 4d 9h | 6,572 | 5,381 |
| 7 | December 3, 2015 17:30 | December 5, 2015 06:00 | 1d 12h | 5,634 | 12K |
| 8 | November 24, 2015 15:00 | November 25, 2015 07:30 | 16h 30m | 5,110 | 5,923 |
| 9 | November 1, 2015 11:15 | November 4, 2015 07:45 | 2d 20h | 5,064 | 18K |
| 10 | July 30, 2015 14:30 | July 31, 2015 01:45 | 11h 15m | 4,876 | 1,376 |
Outage episodes by size in 2015: 89 reached 100+ customers, 22 reached 1,000+ customers, 3 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 2015, 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 | 2015 | 4.6 hrs | 1.46 | 1.9 hrs | 1.02 |
| 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 n/a of Nevada's customers in 2015; 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, 2015, 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/2015/nevada/washoe-county