County annual report · FIPS 53045
2023 Mason County, WA Power Outage Report
In 2023, customers in Mason County, WA went without power for an average of 4.2 hours, a total of 158K customer-hours (Washington average 2.6 hours). That ranks 10th worst of 33 Washington counties and 1630th of 2,977 nationally.
Compared with WA, the US and 2022
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Mason County, 2023
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 24, 2023 08:00 | July 25, 2023 09:15 | 1d 1h | 3,391 | 13K |
| 2 | September 14, 2023 04:00 | September 14, 2023 10:00 | 6h | 3,390 | 14K |
| 3 | May 5, 2023 12:15 | May 5, 2023 17:00 | 4h 45m | 3,003 | 13K |
| 4 | September 26, 2023 16:45 | September 27, 2023 00:15 | 7h 30m | 2,673 | 3,182 |
| 5 | April 22, 2023 17:45 | April 24, 2023 21:15 | 2d 3h | 2,000 | 5,689 |
| 6 | October 21, 2023 21:45 | October 22, 2023 15:45 | 18h | 1,996 | 7,001 |
| 7 | November 4, 2023 00:15 | November 5, 2023 23:15 | 1d 23h | 1,953 | 9,686 |
| 8 | July 1, 2023 21:00 | July 2, 2023 06:45 | 9h 45m | 1,848 | 3,301 |
| 9 | September 23, 2023 20:00 | September 24, 2023 02:00 | 6h | 1,617 | 3,570 |
| 10 | October 17, 2023 14:30 | October 17, 2023 18:15 | 3h 45m | 1,599 | 3,345 |
Outage episodes by size in 2023: 69 reached 100+ customers, 13 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 2023, 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) | 2023 | 55 min | 0.60 | 55 min | 0.60 |
| 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 2023; 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, 2023, 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/2023/washington/mason-county