County annual report · FIPS 53045
2020 Mason County, WA Power Outage Report
In 2020, customers in Mason County, WA went without power for an average of 6.1 hours, a total of 227K customer-hours (Washington average 4.2 hours). That ranks 15th worst of 37 Washington counties and 1231st of 3,019 nationally.
Compared with WA, the US and 2019
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Mason County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 1, 2020 04:00 | September 9, 2020 21:30 | 8d 17h | 6,681 | 39K |
| 2 | October 13, 2020 09:00 | October 24, 2020 11:15 | 11d 2h | 4,770 | 38K |
| 3 | May 15, 2020 16:00 | May 17, 2020 10:00 | 1d 18h | 3,327 | 6,840 |
| 4 | December 18, 2020 03:30 | December 18, 2020 07:45 | 4h 15m | 3,284 | 13K |
| 5 | April 23, 2020 21:30 | April 23, 2020 23:45 | 2h 15m | 2,784 | 4,873 |
| 6 | April 29, 2020 22:45 | April 30, 2020 00:00 | 1h 15m | 2,546 | 637 |
| 7 | June 13, 2020 18:45 | June 15, 2020 23:45 | 2d 5h | 2,297 | 17K |
| 8 | December 14, 2020 15:15 | December 17, 2020 18:45 | 3d 3h | 2,186 | 900 |
| 9 | October 29, 2020 08:00 | October 29, 2020 21:15 | 13h 15m | 2,132 | 15K |
| 10 | October 29, 2020 23:30 | October 30, 2020 02:45 | 3h 15m | 1,833 | 693 |
Outage episodes by size in 2020: 58 reached 100+ customers, 16 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 2020, 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) | 2020 | 85 min | 0.74 | 56 min | 0.57 |
| 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 87% of Washington's customers in 2020; 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, 2020, 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/2020/washington/mason-county