County annual report · FIPS 35051
2021 Sierra County, NM Power Outage Report
In 2021, customers in Sierra County, NM went without power for an average of 0.1 hours, a total of 272 customer-hours (New Mexico average 2.6 hours). That ranks 27th worst of 27 New Mexico counties and 2924th of 2,974 nationally.
Compared with NM, the US and 2020
Coverage line is EAGLE-I's share of New Mexico customers tracked each year.
Biggest outages in Sierra 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 | September 15, 2021 00:30 | September 15, 2021 07:15 | 6h 45m | 28 | 176 |
| 2 | August 4, 2021 05:30 | August 4, 2021 08:30 | 3h | 22 | 61 |
| 3 | August 2, 2021 05:30 | August 2, 2021 09:00 | 3h 30m | 4 | 10 |
| 4 | January 22, 2021 15:15 | January 22, 2021 16:45 | 1h 30m | 2 | 2 |
| 5 | August 2, 2021 15:30 | August 2, 2021 16:45 | 1h 15m | 2 | 2 |
| 6 | October 6, 2021 15:00 | October 6, 2021 20:45 | 5h 45m | 2 | 12 |
| 7 | January 21, 2021 00:15 | January 21, 2021 01:15 | 1h | 1 | 1 |
| 8 | February 28, 2021 18:15 | February 28, 2021 19:15 | 1h | 1 | 1 |
| 9 | June 28, 2021 17:00 | June 28, 2021 18:45 | 1h 45m | 1 | 2 |
| 10 | August 30, 2021 02:30 | August 30, 2021 05:30 | 3h | 1 | 3 |
Outage episodes by size in 2021: 0 reached 100+ customers, 0 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 Sierra 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 |
|---|---|---|---|---|---|
| El Paso Electric Co | 2021 | 2.9 hrs | 1.21 | 2.5 hrs | 1.11 |
| Socorro Electric Coop, Inc | - | - | - | - | - |
| Sierra Electric Coop, Inc | - | - | - | - | - |
| City of Truth or Consequences - (NM) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 82% of New Mexico's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,974 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. Sierra County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sierra County, NM 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/new-mexico/sierra-county