Power Outages in Union County, TN
As of July 18, 2026 18:54 UTC, about 2 customers are without power in Union County, TN across 1 reported incident. In 2025, the average customer here lost power for about 6.9 hours.
Union County, TN is served by 1 tracked utility.
No active NWS alerts for Union County right now.
Union County has been under 11 National Weather Service alerts recently — most recently a Flash Flood Warning on July 17, 2026.
- Flood Watch ×7
- Flash Flood Warning ×3
- Flood Advisory ×1
Hardest-hit cities in Union County
Where this event is concentrated across the county's towns and townships.
Live outage counts are tracked at the county level; a city-by-city split within Union Countyisn't available yet.
Historical reliability
In 2025, the average customer in Union County went about 6.9 hours without power. Peak simultaneous outage on record reached 8,591 customers.
Worst year here was 2024 (peak 6,945 customers out) · decade average 8.4 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2015 | 171 | 7,503 | 2.3 |
| 2016 | 307 | 7,509 | 5.5 |
| 2017 | 320 | 2,618 | 8.5 |
| 2018 | 392 | 8,546 | 11.2 |
| 2019 | 461 | 8,582 | 11.3 |
| 2020 | 502 | 8,591 | 11.3 |
| 2021 | 538 | 5,289 | 7.5 |
| 2022 | 535 | 3,375 | 7.9 |
| 2023 | 552 | 2,862 | 6.8 |
| 2024 | 557 | 6,945 | 12.8 |
| 2025 | 621 | 2,516 | 6.9 |
Relatively Low ice storms exposure · 8.4 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability relatively moderate — outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Union County: FAQ
- How often does Union County, TN lose power?
- Based on EAGLE-I records, Union County, TN logged 621 distinct outage events in 2025, averaging about 6.9 hours without power per customer over the year.
- What was the worst power outage in Union County, TN?
- The largest tracked outage peaked at 8,591 customers without power, beginning March 13, 2020 and lasting about 30m.
- Is there a power outage in Union County, TN right now?
- Yes — about 2 customers are currently without power across 1 reported incident(s).
- Which utilities serve Union County, TN?
- Tracked electric providers include KNOXVILLE UTILITIES BOARD.
Outages are tracked at the county level; these ZIP codes fall within Union County.
37779, 37807, 37866
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| KNOXVILLE UTILITIES BOARD | — | ODIN ✓ | — |
Machine-readable data: /api/v1/counties/47173 and /api/v1/counties/47173/history. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Tennessee customers). Live data as of .