County annual report · FIPS 47057
2017 Grainger County, TN Power Outage Report
In 2017, customers in Grainger County, TN went without power for an average of 2.9 hours, a total of 37K customer-hours (Tennessee average 5.6 hours). That ranks 21st worst of 68 Tennessee counties and 1354th of 2,786 nationally.
Compared with TN, the US and 2016
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Grainger County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 28, 2017 03:00 | May 30, 2017 17:45 | 2d 14h | 840 | 14K |
| 2 | May 30, 2017 23:00 | May 31, 2017 01:15 | 2h 15m | 669 | 1,004 |
| 3 | March 10, 2017 21:15 | March 11, 2017 02:30 | 5h 15m | 663 | 1,524 |
| 4 | July 25, 2017 21:30 | July 26, 2017 02:00 | 4h 30m | 433 | 113 |
| 5 | July 24, 2017 02:30 | July 24, 2017 17:45 | 15h 15m | 376 | 1,949 |
| 6 | December 19, 2017 20:30 | December 19, 2017 23:45 | 3h 15m | 305 | 841 |
| 7 | November 19, 2017 02:15 | November 19, 2017 23:00 | 20h 45m | 264 | 1,835 |
| 8 | October 23, 2017 21:30 | October 24, 2017 08:15 | 10h 45m | 203 | 487 |
| 9 | July 7, 2017 11:30 | July 7, 2017 18:00 | 6h 30m | 184 | 419 |
| 10 | September 12, 2017 03:30 | September 12, 2017 15:45 | 12h 15m | 163 | 870 |
Outage episodes by size in 2017: 17 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 Grainger County reported on EIA Form 861 for 2017, 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 |
|---|---|---|---|---|---|
| Powell Valley Electric Coop | 2017 | 2.2 hrs | 2.36 | 1.7 hrs | 2.23 |
| Knoxville Utilities Board | 2017 | 4.1 hrs | 1.60 | 2.6 hrs | 1.44 |
| Appalachian Electric Coop | 2017 | 5.0 hrs | 2.17 | 3.7 hrs | 2.00 |
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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 12,567 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. Grainger County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grainger County, TN annual power outage report, 2017, 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/2017/tennessee/grainger-county