County annual report · FIPS 47023
2023 Chester County, TN Power Outage Report
In 2023, customers in Chester County, TN went without power for an average of 10.2 hours, a total of 60K customer-hours (Tennessee average 11.1 hours). That ranks 21st worst of 83 Tennessee counties and 823rd of 2,977 nationally.
Compared with TN, the US and 2022
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Chester County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 22, 2023 13:45 | August 22, 2023 21:30 | 7h 45m | 4,415 | 1,775 |
| 2 | March 3, 2023 16:45 | March 5, 2023 20:15 | 2d 3h | 2,397 | 15K |
| 3 | July 18, 2023 23:15 | July 19, 2023 03:00 | 3h 45m | 1,653 | 1,186 |
| 4 | July 21, 2023 04:30 | July 21, 2023 10:15 | 5h 45m | 1,455 | 1,911 |
| 5 | June 7, 2023 10:45 | June 7, 2023 16:00 | 5h 15m | 1,377 | 1,114 |
| 6 | October 6, 2023 06:30 | October 6, 2023 14:45 | 8h 15m | 1,370 | 3,118 |
| 7 | February 10, 2023 17:30 | February 10, 2023 18:45 | 1h 15m | 1,341 | 868 |
| 8 | July 1, 2023 16:15 | July 1, 2023 23:15 | 7h | 1,334 | 1,955 |
| 9 | July 6, 2023 09:15 | July 6, 2023 12:00 | 2h 45m | 1,255 | 1,949 |
| 10 | March 25, 2023 02:00 | March 25, 2023 08:30 | 6h 30m | 869 | 1,143 |
Outage episodes by size in 2023: 34 reached 100+ customers, 9 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 Chester County reported on EIA Form 861 for 2023, 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 |
|---|---|---|---|---|---|
| Southwest Tennessee E M C | 2023 | 11.7 hrs | 3.98 | 3.9 hrs | 2.67 |
| Pickwick Electric Coop | - | - | - | - | - |
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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,853 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. Chester County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Chester County, TN annual power outage report, 2023, 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/2023/tennessee/chester-county