County annual report · FIPS 47055
2021 Giles County, TN Power Outage Report
In 2021, customers in Giles County, TN went without power for an average of 10.0 hours, a total of 165K customer-hours (Tennessee average 3.7 hours). That ranks 8th worst of 84 Tennessee counties and 776th of 2,974 nationally.
Compared with TN, the US and 2020
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Giles County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 12, 2021 21:45 | June 14, 2021 01:00 | 1d 3h | 9,150 | 15K |
| 2 | March 9, 2021 14:30 | March 10, 2021 14:45 | 1d | 7,941 | 49K |
| 3 | October 3, 2021 15:15 | October 3, 2021 16:00 | 45m | 3,860 | 1,279 |
| 4 | November 6, 2021 20:30 | November 7, 2021 00:00 | 3h 30m | 3,273 | 898 |
| 5 | March 26, 2021 01:30 | March 26, 2021 05:30 | 4h | 2,816 | 2,538 |
| 6 | June 21, 2021 18:45 | June 22, 2021 04:15 | 9h 30m | 2,763 | 3,096 |
| 7 | November 7, 2021 12:15 | November 7, 2021 14:30 | 2h 15m | 2,057 | 2,584 |
| 8 | May 16, 2021 12:00 | May 16, 2021 13:30 | 1h 30m | 1,997 | 1,992 |
| 9 | May 6, 2021 23:00 | May 7, 2021 07:15 | 8h 15m | 1,772 | 4,013 |
| 10 | January 16, 2021 21:15 | January 17, 2021 00:15 | 3h | 1,671 | 4,967 |
Outage episodes by size in 2021: 71 reached 100+ customers, 22 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 Giles County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| Duck River Elec Member Corp | 2021 | 7.7 hrs | 2.06 | 2.2 hrs | 1.59 |
| City of Fayetteville | 2021 | 2.8 hrs | 1.88 | 2.4 hrs | 1.81 |
| City of Pulaski - (TN) | 2021 | 3.1 hrs | 2.18 | 1.7 hrs | 1.73 |
| City of Lawrenceburg | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 73% of Tennessee's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 16,388 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. Giles County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Giles County, TN annual power outage report, 2021, 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/2021/tennessee/giles-county