County annual report · FIPS 47045
2021 Dyer County, TN Power Outage Report
In 2021, customers in Dyer County, TN went without power for an average of 0.9 hours, a total of 18K customer-hours (Tennessee average 3.7 hours). That ranks 67th worst of 84 Tennessee counties and 2704th 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 Dyer 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 | December 11, 2021 04:45 | December 13, 2021 18:15 | 2d 13h | 1,680 | 14K |
| 2 | December 15, 2021 07:15 | December 15, 2021 08:30 | 1h 15m | 739 | 924 |
| 3 | August 24, 2021 02:30 | August 24, 2021 03:45 | 1h 15m | 737 | 921 |
| 4 | May 4, 2021 08:30 | May 4, 2021 18:00 | 9h 30m | 52 | 463 |
| 5 | August 2, 2021 18:15 | August 2, 2021 19:45 | 1h 30m | 49 | 50 |
| 6 | February 8, 2021 15:15 | February 8, 2021 15:30 | 15m | 45 | 11 |
| 7 | February 19, 2021 17:00 | February 19, 2021 18:30 | 1h 30m | 45 | 68 |
| 8 | September 2, 2021 07:45 | September 2, 2021 10:30 | 2h 45m | 44 | 121 |
| 9 | November 1, 2021 15:45 | November 1, 2021 16:30 | 45m | 44 | 33 |
| 10 | July 11, 2021 06:00 | July 11, 2021 10:30 | 4h 30m | 37 | 113 |
Outage episodes by size in 2021: 3 reached 100+ customers, 1 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 Dyer 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 |
|---|---|---|---|---|---|
| Gibson Electric Members Corp | 2021 | 16.0 hrs | 3.56 | 2.2 hrs | 3.56 |
| City of Dyersburg | 2021 | 5.1 hrs | 3.16 | 20 min | 0.41 |
| Forked Deer Electric Coop, Inc | - | - | - | - | - |
| City of Newbern | - | - | - | - | - |
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 ÷ 19,619 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. Dyer County has data for 2016–2024.
Cite this report
MassOutage (massoutage.com), Dyer 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/dyer-county