County annual report · FIPS 35051
2025 Sierra County, NM Power Outage Report
In 2025, customers in Sierra County, NM went without power for an average of 0.2 hours, a total of 461 customer-hours (New Mexico average 3.0 hours). That ranks 28th worst of 28 New Mexico counties and 2928th of 3,000 nationally.
Compared with NM, the US and 2024
Coverage line is EAGLE-I's share of New Mexico customers tracked each year.
Biggest outages in Sierra County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 17, 2025 18:00 | May 18, 2025 01:15 | 7h 15m | 76 | 201 |
| 2 | March 12, 2025 21:30 | March 12, 2025 21:45 | 15m | 42 | 11 |
| 3 | October 25, 2025 03:00 | October 25, 2025 05:45 | 2h 45m | 28 | 62 |
| 4 | September 1, 2025 01:15 | September 1, 2025 07:00 | 5h 45m | 24 | 95 |
| 5 | September 19, 2025 22:00 | September 20, 2025 04:30 | 6h 30m | 9 | 23 |
| 6 | June 25, 2025 22:15 | June 25, 2025 23:15 | 1h | 2 | 2 |
| 7 | July 21, 2025 14:45 | July 21, 2025 18:00 | 3h 15m | 2 | 6 |
| 8 | October 23, 2025 08:45 | October 23, 2025 13:00 | 4h 15m | 2 | 5 |
| 9 | October 23, 2025 13:45 | October 23, 2025 16:45 | 3h | 2 | 5 |
| 10 | January 25, 2025 20:00 | January 25, 2025 22:15 | 2h 15m | 1 | 2 |
Outage episodes by size in 2025: 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 2025, 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 | 2024 | 78 min | 0.83 | 78 min | 0.83 |
| 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 n/a of New Mexico's customers in 2025; 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, 2025, 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/2025/new-mexico/sierra-county