County annual report · FIPS 32019
2021 Lyon County, NV Power Outage Report
In 2021, customers in Lyon County, NV went without power for an average of 2.0 hours, a total of 55K customer-hours (Nevada average 1.7 hours). That ranks 10th worst of 15 Nevada counties and 2236th 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 Lyon 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 | October 27, 2021 19:00 | October 28, 2021 05:00 | 10h | 2,374 | 3,076 |
| 2 | July 6, 2021 01:15 | July 6, 2021 05:15 | 4h | 2,361 | 9,209 |
| 3 | May 15, 2021 17:45 | May 16, 2021 09:30 | 15h 45m | 2,201 | 5,387 |
| 4 | August 1, 2021 02:30 | August 1, 2021 05:45 | 3h 15m | 1,977 | 2,939 |
| 5 | December 27, 2021 09:30 | December 27, 2021 18:45 | 9h 15m | 1,922 | 2,750 |
| 6 | July 9, 2021 08:00 | July 9, 2021 14:45 | 6h 45m | 1,107 | 283 |
| 7 | February 12, 2021 08:00 | February 12, 2021 08:30 | 30m | 949 | 475 |
| 8 | May 24, 2021 06:15 | May 24, 2021 06:45 | 30m | 949 | 475 |
| 9 | March 10, 2021 16:15 | March 10, 2021 18:00 | 1h 45m | 947 | 474 |
| 10 | January 27, 2021 20:45 | January 27, 2021 22:15 | 1h 30m | 946 | 474 |
Outage episodes by size in 2021: 32 reached 100+ customers, 6 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 Lyon 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 |
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 ÷ 28,135 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. Lyon County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lyon 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/lyon-county