County annual report · FIPS 06085
2023 Santa Clara County, CA Power Outage Report
In 2023, customers in Santa Clara County, CA went without power for an average of 10.7 hours, a total of 9.0M customer-hours (California average 7.9 hours). That ranks 29th worst of 57 California counties and 796th of 2,977 nationally.
Compared with CA, the US and 2022
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Santa Clara County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 20, 2023 16:45 | April 7, 2023 11:45 | 45d 19h | 138,982 | 5.5M |
| 2 | January 10, 2023 10:15 | January 10, 2023 20:15 | 10h | 68,962 | 373K |
| 3 | June 20, 2023 13:15 | July 23, 2023 04:15 | 32d 15h | 40,257 | 255K |
| 4 | January 11, 2023 01:00 | February 3, 2023 13:00 | 23d 12h | 25,456 | 806K |
| 5 | January 1, 2023 00:00 | January 10, 2023 05:00 | 9d 5h | 21,513 | 559K |
| 6 | December 12, 2023 16:15 | December 24, 2023 08:30 | 11d 16h | 19,677 | 110K |
| 7 | September 17, 2023 20:15 | September 24, 2023 04:15 | 6d 8h | 16,346 | 71K |
| 8 | September 26, 2023 14:45 | September 28, 2023 08:45 | 1d 18h | 6,672 | 43K |
| 9 | August 18, 2023 12:15 | August 20, 2023 05:45 | 1d 17h | 6,468 | 49K |
| 10 | February 3, 2023 14:30 | February 10, 2023 13:30 | 6d 23h | 6,442 | 54K |
Outage episodes by size in 2023: 47 reached 100+ customers, 39 reached 1,000+ customers, 7 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 2023, 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. | 2023 | 11.9 hrs | 2.22 | 4.3 hrs | 1.56 |
| City of Palo Alto - (CA) | 2023 | 2.9 hrs | 1.56 | - | - |
| City of Santa Clara - (CA) | 2023 | 2.5 hrs | 1.34 | 66 min | 0.80 |
| 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 2023; 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, 2023, 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/2023/california/santa-clara-county