County annual report · FIPS 06013
2025 Contra Costa County, CA Power Outage Report
In 2025, customers in Contra Costa County, CA went without power for an average of 3.0 hours, a total of 1.5M customer-hours (California average 7.6 hours). That ranks 50th worst of 57 California counties and 2044th of 3,000 nationally.
Compared with CA, the US and 2024
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Contra Costa County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 5, 2025 13:30 | May 9, 2025 11:00 | 3d 21h | 11,336 | 61K |
| 2 | September 20, 2025 15:00 | September 28, 2025 10:15 | 7d 19h | 9,816 | 94K |
| 3 | July 15, 2025 13:45 | July 18, 2025 12:00 | 2d 22h | 9,702 | 25K |
| 4 | October 1, 2025 16:00 | October 19, 2025 03:45 | 17d 11h | 7,200 | 83K |
| 5 | July 22, 2025 15:00 | July 26, 2025 10:30 | 3d 19h | 6,797 | 33K |
| 6 | March 11, 2025 15:00 | March 14, 2025 12:00 | 2d 21h | 6,611 | 32K |
| 7 | November 11, 2025 15:15 | November 12, 2025 06:45 | 15h 30m | 6,222 | 6,523 |
| 8 | September 16, 2025 11:30 | September 20, 2025 09:30 | 3d 22h | 6,064 | 24K |
| 9 | September 9, 2025 06:30 | September 14, 2025 13:00 | 5d 6h | 5,876 | 81K |
| 10 | June 23, 2025 13:45 | June 25, 2025 10:45 | 1d 21h | 5,557 | 18K |
Outage episodes by size in 2025: 149 reached 100+ customers, 70 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 Contra Costa County reported on EIA Form 861 for 2025, 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 2025; 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, 2025, 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/2025/california/contra-costa-county