County annual report · FIPS 06085
2018 Santa Clara County, CA Power Outage Report
In 2018, customers in Santa Clara County, CA went without power for an average of 1.0 hours, a total of 886K customer-hours (California average 3.7 hours). That ranks 49th worst of 57 California counties and 2294th of 2,798 nationally.
Compared with CA, the US and 2017
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Santa Clara County, 2018
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 9, 2018 08:45 | September 11, 2018 05:15 | 1d 20h | 19,587 | 20K |
| 2 | October 19, 2018 02:00 | October 22, 2018 09:15 | 3d 7h | 7,277 | 13K |
| 3 | June 12, 2018 15:15 | June 15, 2018 06:30 | 2d 15h | 6,181 | 9,178 |
| 4 | December 24, 2018 20:30 | December 31, 2018 00:15 | 6d 3h | 6,054 | 24K |
| 5 | August 1, 2018 14:00 | August 6, 2018 10:30 | 4d 20h | 5,830 | 46K |
| 6 | June 5, 2018 23:30 | June 11, 2018 05:45 | 5d 6h | 5,057 | 23K |
| 7 | November 19, 2018 02:30 | November 26, 2018 12:45 | 7d 10h | 4,912 | 44K |
| 8 | July 7, 2018 11:00 | July 9, 2018 05:00 | 1d 18h | 4,789 | 11K |
| 9 | September 29, 2018 14:45 | October 1, 2018 00:00 | 1d 9h | 4,731 | 11K |
| 10 | July 19, 2018 03:15 | July 24, 2018 06:45 | 5d 3h | 4,726 | 16K |
Outage episodes by size in 2018: 92 reached 100+ customers, 48 reached 1,000+ customers, 1 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 2018, 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. | 2018 | 5.0 hrs | 1.18 | 2.1 hrs | 1.08 |
| City of Palo Alto - (CA) | 2018 | 78 min | 0.50 | - | - |
| City of Santa Clara - (CA) | 2013 | 51 min | 0.52 | - | - |
| 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 91% of California's customers in 2018; 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, 2018, 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/2018/california/santa-clara-county