Grainger County, TN Power Outages
As of Nov 3, 12:45 AM EST, no power outages were reported in Grainger County, Tennessee by Knoxville Utilities Board.
Grainger County on the Tennessee outage map
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- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Grainger County power outage history
Every significant outage recorded in Grainger County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 207 significant power outages in Grainger County, meaning events that left at least 1% of customers in the dark. The largest (Sep 25–30, 2024) came when flooding left 5,826 customers (46.4% of the county) without power.
From 2018 to 2025, the average customer here lost about 6 hr 24 min of power per year, more than the Tennessee average of 5 hr 20 min. That ranks 25th of 88 Tennessee counties for outage time, where 1st has the most.
September is the riskiest month: it accounted for 31% of all customer outage time from 2018 to 2025. On 114 days in that period, at least 5% of customers were out at the same time. Outage time in Grainger County has risen recently: about 10 hr 6 min per customer per year in 2022–2025, versus 2 hr 41 min in 2018–2021.
The most recent significant outage on record (Dec 29, 2025) affected 392 customers (3.1%) amid severe thunderstorms.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Sep 25–30, 2024 | 5,826(46.4%) | 6 | Flooding |
| 2 | Dec 23–25, 2022 | 4,225(33.6%) | 3 | Winter Storm Elliott |
| 3 | May 2, 2024 | 3,908(31.1%) | 1 | No major storm reported |
| 4 | May 8–9, 2024 | 2,741(21.8%) | 2 | Severe thunderstorms |
| 5 | May 26–27, 2024 | 2,610(20.8%) | 2 | Severe thunderstorms |
Hours without power per customer, by year
When outages happen
Source: DOE/ORNL EAGLE-I recorded electricity outages, 2014–2025 (CC BY 4.0), with likely causes from the NOAA NCEI Storm Events Database. EAGLE-I coverage was partial before 2018, so averages use 2018–2025. Peak counts are the highest number of customers out at one time.
Who provides electricity in Grainger County?
Electric companies with service territory in Grainger County (EIA-861, 2025)
| Utility | Type | Customers (TN) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Knoxville Utilities Board (KUB) | Municipal | 225,030 | Reporting | |
| Appalachian Electric Coop | Cooperative | 52,126 | Not reporting | |
| Powell Valley Electric Coop | Cooperative | 26,771 | Not reporting |
Customer counts are each utility's statewide total in Tennessee. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Grainger County outage headlines in the past week.
Grainger County power outage FAQ
Is the power out in Grainger County right now?
No outages are currently reported for Grainger County by participating utilities. If your power is out, report it to your electric company.
Which electric company serves Grainger County?
According to EIA-861 service territory data, Knoxville Utilities Board, Appalachian Electric Coop, Powell Valley Electric Coop provide electric service in Grainger County, Tennessee.
What was the worst power outage in Grainger County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Sep 25–30, 2024. It peaked at 5,826 customers without power (46.4% of the county). NOAA storm reports for that period point to flooding.
How often does the power go out in Grainger County?
EAGLE-I has recorded 207 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 6 hr 24 min of power per year, and on 114 days at least 5% of customers were out at once.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Underlying government data is public domain.
PowerOutageTracker.com. "Grainger County, TN Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/tennessee/grainger-county