County annual report · FIPS 47179
2025 Washington County, TN Power Outage Report
In 2025, customers in Washington County, TN went without power for an average of 2.0 hours, a total of 170K customer-hours (Tennessee average 4.3 hours). That ranks 53rd worst of 81 Tennessee counties and 2424th of 3,000 nationally.
Compared with TN, the US and 2024
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Washington 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 | March 23, 2025 18:15 | March 24, 2025 00:00 | 5h 45m | 7,752 | 13K |
| 2 | February 5, 2025 14:00 | February 6, 2025 02:15 | 12h 15m | 6,592 | 3,957 |
| 3 | June 16, 2025 03:30 | June 16, 2025 11:15 | 7h 45m | 2,747 | 1,498 |
| 4 | March 5, 2025 02:30 | March 5, 2025 22:45 | 20h 15m | 2,208 | 13K |
| 5 | August 27, 2025 13:00 | August 27, 2025 15:45 | 2h 45m | 2,199 | 1,104 |
| 6 | April 5, 2025 22:00 | April 6, 2025 00:00 | 2h | 2,106 | 2,039 |
| 7 | April 8, 2025 12:45 | April 8, 2025 23:00 | 10h 15m | 1,877 | 2,549 |
| 8 | June 24, 2025 23:00 | June 25, 2025 05:15 | 6h 15m | 1,826 | 2,251 |
| 9 | February 16, 2025 08:45 | February 17, 2025 22:45 | 1d 14h | 1,688 | 6,977 |
| 10 | April 1, 2025 12:00 | April 1, 2025 17:00 | 5h | 1,676 | 433 |
Outage episodes by size in 2025: 127 reached 100+ customers, 23 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 Washington 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 |
|---|---|---|---|---|---|
| Johnson City - (TN) | 2024 | 11.0 hrs | 2.20 | 2.5 hrs | 1.24 |
| Kingsport Power Co | 2024 | 17.1 hrs | 1.80 | 2.7 hrs | 1.19 |
| City of Elizabethton - (TN) | - | - | - | - | - |
| Town of Erwin - (TN) | - | - | - | - | - |
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 Tennessee's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 86,325 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. Washington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washington County, TN 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/tennessee/washington-county