County annual report · FIPS 47059
2025 Greene County, TN Power Outage Report
In 2025, customers in Greene County, TN went without power for an average of 4.0 hours, a total of 158K customer-hours (Tennessee average 4.3 hours). That ranks 42nd worst of 81 Tennessee counties and 1781st 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 Greene 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 | May 17, 2025 06:45 | May 19, 2025 05:45 | 1d 23h | 9,221 | 59K |
| 2 | June 3, 2025 17:15 | June 3, 2025 23:45 | 6h 30m | 3,257 | 1,478 |
| 3 | May 20, 2025 11:30 | May 23, 2025 19:15 | 3d 7h | 3,202 | 22K |
| 4 | July 17, 2025 22:45 | July 18, 2025 18:45 | 20h | 2,660 | 3,023 |
| 5 | December 19, 2025 05:30 | December 19, 2025 10:45 | 5h 15m | 2,267 | 2,240 |
| 6 | June 18, 2025 00:00 | June 19, 2025 09:45 | 1d 9h | 2,077 | 1,976 |
| 7 | November 26, 2025 12:45 | November 26, 2025 13:15 | 30m | 1,710 | 428 |
| 8 | January 19, 2025 12:00 | January 19, 2025 13:00 | 1h | 1,492 | 1,414 |
| 9 | December 3, 2025 13:00 | December 3, 2025 13:30 | 30m | 1,452 | 726 |
| 10 | December 28, 2025 07:45 | December 28, 2025 13:45 | 6h | 1,452 | 2,489 |
Outage episodes by size in 2025: 83 reached 100+ customers, 21 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 Greene 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 |
|---|---|---|---|---|---|
| Holston Electric Coop, Inc | 2024 | 14.9 hrs | 3.45 | 3.3 hrs | 2.31 |
| Johnson City - (TN) | 2024 | 11.0 hrs | 2.20 | 2.5 hrs | 1.24 |
| City of Greeneville - (TN) | 2024 | 13.2 hrs | 3.26 | 2.1 hrs | 1.84 |
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 ÷ 39,858 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. Greene County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Greene 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/greene-county