County annual report · FIPS 06075
2018 San Francisco County, CA Power Outage Report
In 2018, customers in San Francisco County, CA went without power for an average of 1.6 hours, a total of 331K customer-hours (California average 3.7 hours). That ranks 40th worst of 57 California counties and 2048th 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 San Francisco 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 | November 21, 2018 16:15 | November 23, 2018 00:15 | 1d 8h | 11,278 | 22K |
| 2 | June 25, 2018 15:15 | June 26, 2018 05:45 | 14h 30m | 7,230 | 11K |
| 3 | June 6, 2018 16:00 | June 7, 2018 05:00 | 13h | 7,148 | 5,560 |
| 4 | July 13, 2018 15:30 | July 16, 2018 05:15 | 2d 13h | 6,726 | 21K |
| 5 | August 29, 2018 02:15 | August 31, 2018 01:15 | 1d 23h | 6,427 | 5,513 |
| 6 | June 19, 2018 02:30 | June 19, 2018 11:00 | 8h 30m | 4,635 | 3,394 |
| 7 | June 22, 2018 03:00 | June 22, 2018 09:15 | 6h 15m | 4,632 | 2,656 |
| 8 | August 26, 2018 06:00 | August 26, 2018 10:00 | 4h | 3,747 | 5,994 |
| 9 | June 8, 2018 15:15 | June 10, 2018 10:30 | 1d 19h | 2,961 | 10K |
| 10 | September 12, 2018 15:45 | September 13, 2018 06:45 | 15h | 2,747 | 4,743 |
Outage episodes by size in 2018: 157 reached 100+ customers, 29 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 San Francisco 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 & 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 91% of California's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 209,753 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 Francisco County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), San Francisco 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/san-francisco-county