County annual report · FIPS 06085
2025 Santa Clara County, CA Power Outage Report
In 2025, customers in Santa Clara County, CA went without power for an average of 3.4 hours, a total of 2.9M customer-hours (California average 7.6 hours). That ranks 47th worst of 57 California counties and 1935th of 3,000 nationally.
Compared with CA, the US and 2024
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Santa Clara 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 | March 20, 2025 23:30 | April 2, 2025 11:00 | 12d 11h | 40,070 | 111K |
| 2 | March 4, 2025 15:15 | March 20, 2025 13:45 | 15d 22h | 39,388 | 345K |
| 3 | December 16, 2025 14:30 | January 1, 2026 00:00 | 15d 9h | 30,821 | 456K |
| 4 | February 12, 2025 15:30 | February 16, 2025 10:30 | 3d 19h | 12,025 | 66K |
| 5 | October 12, 2025 11:00 | October 17, 2025 14:00 | 5d 3h | 10,738 | 83K |
| 6 | February 3, 2025 16:00 | February 8, 2025 14:30 | 4d 22h | 8,733 | 44K |
| 7 | November 12, 2025 16:30 | November 16, 2025 02:30 | 3d 10h | 6,689 | 31K |
| 8 | March 2, 2025 15:45 | March 4, 2025 12:00 | 1d 20h | 6,220 | 12K |
| 9 | July 21, 2025 13:15 | July 27, 2025 21:30 | 6d 8h | 5,969 | 36K |
| 10 | May 21, 2025 12:45 | May 30, 2025 11:00 | 8d 22h | 5,733 | 92K |
Outage episodes by size in 2025: 81 reached 100+ customers, 59 reached 1,000+ customers, 5 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 Santa Clara 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 |
|---|---|---|---|---|---|
| Pacific Gas & Electric Co. | 2024 | 8.5 hrs | 2.15 | 4.6 hrs | 1.82 |
| City of Palo Alto - (CA) | 2024 | 2.2 hrs | 0.88 | - | - |
| City of Santa Clara - (CA) | 2024 | 3.5 hrs | 0.91 | 2.7 hrs | 0.85 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
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 California's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 844,715 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. Santa Clara County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Santa Clara County, CA 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/california/santa-clara-county