Power Outages in Grainger County, TN
As of October 19, 2026 03:05 UTC, no outages are reported by Holston Electric Coop, Inc and Knoxville Utilities Board in Grainger County, TN. Appalachian Electric Coop publishes only a system-wide total, not county figures. There is no live feed for Powell Valley Electric Coop. In 2025, the average customer here lost power for about 3.6 hours.
Grainger County, TN is served by 4 tracked utilities.
Cite this data
- URL
- https://massoutage.com/tennessee/grainger-county
- As of
- October 19, 2026 03:05 UTC
- Publisher
- MassOutage
MassOutage, "Power Outages in Grainger County, TN", live data as of October 19, 2026 03:05 UTC. https://massoutage.com/tennessee/grainger-county
No active outages are reported by Holston Electric Coop, Inc and Knoxville Utilities Board in Grainger County.
Appalachian Electric Coop publishes no county-level figures.
No live feed for Powell Valley Electric Coop: outages in itsservice area won't show here.
0.1%of this county's ~13,739 customers are served by utilities with a county-level live feed.
We can't see outages for: Powell Valley Electric Coop. Their customers are not in any number on this page; check their own outage maps.
System-wide total only, no county split: Appalachian Electric Coop.
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Holston Electric Coop, Inc | Live · county | 0 | 11 | 0.0% | - | - | - | |
| Appalachian Electric Coop | Live · total only | not by county | - | - | - | - | - | - |
| Knoxville Utilities Board | Live · county | 0 | - | - | - | 0 | - | |
| Powell Valley Electric Coop | No live feed | can't see | - | - | - | - | - | - |
Holston Electric Coop, Inc and Knoxville Utilities Board reportevery town in the county on each poll, so 0 out is a real all-clear. ETRs are the utility's own estimates.
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Grainger Countywho rely on electricity-dependent medical equipment (ventilators, oxygen concentrators, home dialysis, powered wheelchairs, and more). HHS reports counts of 1–10 as “≤11”. Medicare only, so the full at-risk population is larger.
By ZIP code (6)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 37861 | 216 | ≤11 | 188 | ≤11 |
| 37708 | 202 | ≤11 | 180 | ≤11 |
| 37709 | 81 | ≤11 | 69 | ≤11 |
| 37888 | 51 | ≤11 | 43 | ≤11 |
| 37881 | 47 | ≤11 | 44 | 0 |
| 37848 | ≤11 | 0 | ≤11 | 0 |
Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.
Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Grainger County or any town and utility in it.
No active NWS alerts for Grainger County right now.
Grainger County has been under 14 National Weather Service alerts recently, most recently a Special Weather Statement on October 13, 2026.
- Special Weather Statement ×10
- Wind Advisory ×3
- Severe Thunderstorm Warning ×1
Latest Grainger County, TN outage updates
A running log of how this outage has changed, updated automatically as utilities report in.
- RESOLVED
Power restored after 35m
- OUTAGE BEGAN
Outage began: 164 customers out (1.3% of the county)
Hardest-hit cities in Grainger County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Grainger County went about 3.6 hours without power. Peak simultaneous outage on record reached 5,826 customers.
The US EIA reports Tennessee utilities averaged 3.8 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 3.6 hrs.
Worst year here was 2024 (peak 5,826 customers out) · decade average 5.1 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2015 | 83 | 308 | 0.4 |
| 2016 | 167 | 497 | 1.5 |
| 2017 | 159 | 840 | 2.9 |
| 2018 | 202 | 902 | 2.0 |
| 2019 | 215 | 1,257 | 3.5 |
| 2020 | 285 | 1,145 | 2.9 |
| 2021 | 305 | 2,335 | 2.4 |
| 2022 | 445 | 4,225 | 6.9 |
| 2023 | 593 | 2,514 | 7.1 |
| 2024 | 559 | 5,826 | 22.9 |
| 2025 | 330 | 1,946 | 3.6 |
Cost of power in Grainger County
ENERGY & AI DEMAND →Estimated residential electricity price for Grainger County, customer-weighted across the utilities serving it (US EIA, 2025). Retail prices aren't published at the county level; this is a derived estimate.
- Knoxville Utilities Board13.8¢196,674 cust
- Appalachian Electric Coop13.6¢44,280 cust
- Powell Valley Electric Coop12.2¢21,217 cust
Weighted by each utility's residential customer count (utilities report customers at the state level; a per-county share isn't published). Rising retail prices track a national demand surge; see energy & the data-center boom.
Relatively Low ice storms exposure · 5.1 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability relatively high: outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Grainger County: FAQ
- How often does Grainger County, TN lose power?
- Based on EAGLE-I records, Grainger County, TN logged 330 distinct outage events in 2025, averaging about 3.6 hours without power per customer over the year.
- What was the worst power outage in Grainger County, TN?
- The largest tracked outage peaked at 5,826 customers without power, beginning September 27, 2024 and lasting about 4d 22h.
- Is there a power outage in Grainger County, TN right now?
- No major outage is currently reported for Grainger County, TN. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Grainger County, TN?
- Tracked electric providers include Knoxville Utilities Board.
Outages are tracked at the county level; these ZIP codes fall within Grainger County.
37708, 37709, 37848, 37861, 37881, 37888
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Powell Valley Electric Coop | 3.0 hrs | No live feed | - |
| Knoxville Utilities Board | 4.6 hrs | Live · county | - |
| Appalachian Electric Coop | 5.0 hrs | Live · total only | - |
Data from DOE/ORNL ODIN, DOE EAGLE-I, EIA Form 861 (utility reliability), EIA electricity retail prices and FEMA National Risk Index, every source we read. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Tennessee customers). Machine-readable data: /api/v1/counties/47057 and /api/v1/counties/47057/history.