County annual report · FIPS 47023
2025 Chester County, TN Power Outage Report
In 2025, customers in Chester County, TN went without power for an average of 7.1 hours, a total of 42K customer-hours (Tennessee average 4.3 hours). That ranks 17th worst of 81 Tennessee counties and 1126th of 3,000 nationally.
Compared with TN, the US and 2024
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Chester County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 15, 2025 12:15 | March 15, 2025 20:30 | 8h 15m | 5,313 | 11K |
| 2 | October 21, 2025 20:30 | October 21, 2025 21:15 | 45m | 1,983 | 1,487 |
| 3 | April 24, 2025 02:30 | April 24, 2025 04:30 | 2h | 1,270 | 1,043 |
| 4 | May 20, 2025 13:15 | May 20, 2025 18:00 | 4h 45m | 951 | 2,633 |
| 5 | March 1, 2025 18:30 | March 3, 2025 00:15 | 1d 5h | 945 | 1,245 |
| 6 | July 31, 2025 22:15 | August 1, 2025 01:30 | 3h 15m | 812 | 661 |
| 7 | November 25, 2025 07:45 | November 25, 2025 12:00 | 4h 15m | 643 | 1,011 |
| 8 | June 19, 2025 07:15 | June 19, 2025 12:15 | 5h | 618 | 665 |
| 9 | August 31, 2025 12:00 | August 31, 2025 14:15 | 2h 15m | 607 | 305 |
| 10 | March 27, 2025 15:00 | March 27, 2025 16:00 | 1h | 605 | 419 |
Outage episodes by size in 2025: 28 reached 100+ customers, 3 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 2025, 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 2025; 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, 2025, 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/2025/tennessee/chester-county