County annual report · FIPS 06081
2017 San Mateo County, CA Power Outage Report
In 2017, customers in San Mateo County, CA went without power for an average of 0.0 hours, a total of 988 customer-hours (California average 2.2 hours). That ranks 25th worst of 47 California counties and 2721st of 2,786 nationally.
Compared with CA, the US
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in San Mateo County, 2017
The 8 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 16, 2017 20:15 | December 17, 2017 02:00 | 5h 45m | 162 | 846 |
| 2 | November 21, 2017 00:00 | November 21, 2017 00:15 | 15m | 55 | 14 |
| 3 | December 18, 2017 16:30 | December 18, 2017 20:00 | 3h 30m | 28 | 40 |
| 4 | December 14, 2017 03:45 | December 14, 2017 14:00 | 10h 15m | 8 | 82 |
| 5 | November 29, 2017 19:15 | November 29, 2017 20:15 | 1h | 1 | 1 |
| 6 | December 3, 2017 17:30 | December 3, 2017 21:00 | 3h 30m | 1 | 4 |
| 7 | December 12, 2017 20:15 | December 12, 2017 21:00 | 45m | 1 | 1 |
| 8 | December 30, 2017 23:30 | December 31, 2017 00:15 | 45m | 1 | 1 |
Outage episodes by size in 2017: 1 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 San Mateo County reported on EIA Form 861 for 2017, 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. | 2017 | 6.2 hrs | 1.55 | 1.9 hrs | 0.96 |
| City & County of San Francisco | - | - | - | - | - |
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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 328,408 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. San Mateo County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), San Mateo County, CA annual power outage report, 2017, 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/2017/california/san-mateo-county