County annual report · FIPS 53045
2019 Mason County, WA Power Outage Report
In 2019, customers in Mason County, WA went without power for an average of 1.1 hours, a total of 43K customer-hours (Washington average 2.0 hours). That ranks 22nd worst of 37 Washington counties and 2441st of 2,945 nationally.
Compared with WA, the US and 2018
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Mason County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 20, 2019 18:15 | December 21, 2019 06:15 | 12h | 3,305 | 5,837 |
| 2 | August 14, 2019 12:30 | August 14, 2019 23:15 | 10h 45m | 1,749 | 3,971 |
| 3 | October 26, 2019 20:00 | October 27, 2019 09:00 | 13h | 1,745 | 2,690 |
| 4 | October 7, 2019 16:00 | October 7, 2019 23:15 | 7h 15m | 1,273 | 2,209 |
| 5 | July 27, 2019 19:00 | July 27, 2019 23:00 | 4h | 1,202 | 1,599 |
| 6 | August 29, 2019 22:30 | August 30, 2019 07:45 | 9h 15m | 1,118 | 3,812 |
| 7 | June 22, 2019 17:45 | June 22, 2019 20:15 | 2h 30m | 985 | 2,463 |
| 8 | June 24, 2019 07:45 | June 24, 2019 14:45 | 7h | 610 | 3,503 |
| 9 | September 8, 2019 09:15 | September 8, 2019 10:45 | 1h 30m | 610 | 763 |
| 10 | July 2, 2019 17:30 | July 2, 2019 18:45 | 1h 15m | 524 | 139 |
Outage episodes by size in 2019: 29 reached 100+ customers, 6 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 2019, 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) | 2018 | 86 min | 0.77 | 56 min | 0.49 |
| 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 86% of Washington's customers in 2019; 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, 2019, 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/2019/washington/mason-county