County annual report · FIPS 53045
2025 Mason County, WA Power Outage Report
In 2025, customers in Mason County, WA went without power for an average of 5.6 hours, a total of 209K customer-hours (Washington average 7.0 hours). That ranks 20th worst of 33 Washington counties and 1366th of 3,000 nationally.
Compared with WA, the US and 2024
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Mason 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 | July 17, 2025 05:00 | July 17, 2025 12:30 | 7h 30m | 5,707 | 39K |
| 2 | October 25, 2025 22:00 | October 26, 2025 22:45 | 1d | 5,354 | 28K |
| 3 | February 25, 2025 06:30 | February 26, 2025 15:00 | 1d 8h | 5,315 | 28K |
| 4 | August 18, 2025 17:15 | August 18, 2025 20:45 | 3h 30m | 3,347 | 5,023 |
| 5 | February 25, 2025 01:30 | February 25, 2025 03:45 | 2h 15m | 2,754 | 3,843 |
| 6 | May 17, 2025 16:30 | May 18, 2025 06:00 | 13h 30m | 2,442 | 10K |
| 7 | November 17, 2025 18:15 | November 17, 2025 21:30 | 3h 15m | 2,037 | 2,552 |
| 8 | November 28, 2025 02:00 | November 28, 2025 21:30 | 19h 30m | 1,836 | 7,076 |
| 9 | February 10, 2025 21:30 | February 11, 2025 01:15 | 3h 45m | 1,832 | 2,500 |
| 10 | April 11, 2025 18:15 | April 11, 2025 23:00 | 4h 45m | 1,826 | 1,595 |
Outage episodes by size in 2025: 52 reached 100+ customers, 17 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 Mason 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 |
|---|---|---|---|---|---|
| City of Tacoma - (WA) | 2024 | 2.8 hrs | 0.93 | 80 min | 0.55 |
| PUD No 3 of Mason County | - | - | - | - | - |
| PUD No 1 of Mason County | - | - | - | - | - |
| PUD No 3 of Mason County,masonpud3 | - | - | - | - | - |
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 Washington's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 37,529 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. Mason County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mason County, WA 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/washington/mason-county