County annual report · FIPS 06013
2024 Contra Costa County, CA Power Outage Report
In 2024, customers in Contra Costa County, CA went without power for an average of 5.5 hours, a total of 2.7M customer-hours (California average 6.1 hours). That ranks 39th worst of 57 California counties and 1510th of 2,990 nationally.
Compared with CA, the US and 2023
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Contra Costa County, 2024
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 4, 2024 09:15 | February 8, 2024 11:30 | 4d 2h | 41,219 | 691K |
| 2 | December 14, 2024 12:15 | December 16, 2024 04:45 | 1d 16h | 19,277 | 88K |
| 3 | August 8, 2024 14:45 | August 9, 2024 14:15 | 23h 30m | 14,912 | 23K |
| 4 | June 30, 2024 20:15 | July 9, 2024 09:30 | 8d 13h | 11,217 | 207K |
| 5 | May 2, 2024 15:00 | May 5, 2024 15:15 | 3d | 9,986 | 54K |
| 6 | September 8, 2024 02:45 | September 9, 2024 09:00 | 1d 6h | 9,481 | 22K |
| 7 | July 31, 2024 13:30 | August 5, 2024 13:00 | 4d 23h | 8,754 | 45K |
| 8 | November 22, 2024 15:30 | November 25, 2024 05:00 | 2d 13h | 8,651 | 18K |
| 9 | March 21, 2024 07:45 | March 22, 2024 11:15 | 1d 3h | 8,365 | 9,033 |
| 10 | February 17, 2024 16:30 | February 25, 2024 12:00 | 7d 19h | 8,210 | 58K |
Outage episodes by size in 2024: 168 reached 100+ customers, 90 reached 1,000+ customers, 4 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 Contra Costa County reported on EIA Form 861 for 2024, 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 |
| 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 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 486,945 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. Contra Costa County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Contra Costa County, CA annual power outage report, 2024, 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/2024/california/contra-costa-county