County annual report · FIPS 47179
2018 Washington County, TN Power Outage Report
In 2018, customers in Washington County, TN went without power for an average of 0.1 hours, a total of 6,502 customer-hours (Tennessee average 2.1 hours). That ranks 56th worst of 71 Tennessee counties and 2676th of 2,798 nationally.
Compared with TN, the US and 2017
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Washington County, 2018
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 9, 2018 18:45 | December 11, 2018 23:15 | 2d 4h | 309 | 3,191 |
| 2 | April 7, 2018 04:30 | April 7, 2018 05:00 | 30m | 256 | 128 |
| 3 | February 13, 2018 18:30 | February 14, 2018 01:00 | 6h 30m | 113 | 534 |
| 4 | May 18, 2018 13:15 | May 18, 2018 14:30 | 1h 15m | 113 | 141 |
| 5 | October 11, 2018 21:15 | October 12, 2018 03:15 | 6h | 48 | 288 |
| 6 | October 18, 2018 11:45 | October 18, 2018 18:15 | 6h 30m | 48 | 104 |
| 7 | June 8, 2018 12:30 | June 8, 2018 17:15 | 4h 45m | 47 | 220 |
| 8 | January 6, 2018 14:30 | January 6, 2018 17:30 | 3h | 46 | 138 |
| 9 | January 18, 2018 07:15 | January 18, 2018 08:15 | 1h | 46 | 46 |
| 10 | January 18, 2018 09:00 | January 18, 2018 11:45 | 2h 45m | 46 | 104 |
Outage episodes by size in 2018: 4 reached 100+ customers, 0 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 2018, 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) | 2018 | 25 min | 0.26 | 24 min | 0.26 |
| Kingsport Power Co | 2018 | 14.9 hrs | 2.51 | 5.1 hrs | 1.94 |
| 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 55% of Tennessee's customers in 2018; 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, 2018, 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/2018/tennessee/washington-county