County annual report · FIPS 47059
2021 Greene County, TN Power Outage Report
In 2021, customers in Greene County, TN went without power for an average of 1.6 hours, a total of 65K customer-hours (Tennessee average 3.7 hours). That ranks 54th worst of 84 Tennessee counties and 2389th 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 Greene 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 | October 6, 2021 05:30 | October 6, 2021 08:00 | 2h 30m | 3,748 | 5,668 |
| 2 | October 25, 2021 21:00 | October 25, 2021 23:00 | 2h | 3,104 | 1,224 |
| 3 | March 26, 2021 00:15 | March 26, 2021 03:15 | 3h | 3,065 | 909 |
| 4 | March 26, 2021 04:15 | March 26, 2021 09:15 | 5h | 3,064 | 856 |
| 5 | December 11, 2021 14:30 | December 12, 2021 01:00 | 10h 30m | 2,562 | 7,101 |
| 6 | November 18, 2021 12:45 | November 18, 2021 13:00 | 15m | 2,303 | 576 |
| 7 | May 11, 2021 11:00 | May 11, 2021 16:30 | 5h 30m | 2,270 | 3,438 |
| 8 | April 25, 2021 17:15 | April 25, 2021 17:45 | 30m | 2,073 | 1,037 |
| 9 | June 7, 2021 18:15 | June 7, 2021 21:45 | 3h 30m | 2,021 | 1,025 |
| 10 | March 27, 2021 15:15 | March 27, 2021 23:15 | 8h | 1,805 | 2,149 |
Outage episodes by size in 2021: 62 reached 100+ customers, 17 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 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 |
|---|---|---|---|---|---|
| Holston Electric Coop, Inc | 2021 | 2.4 hrs | 1.83 | 2.1 hrs | 1.70 |
| Johnson City - (TN) | 2021 | 20 min | 0.25 | 20 min | 0.25 |
| City of Greeneville - (TN) | 2021 | 87 min | 1.42 | 77 min | 1.32 |
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 ÷ 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, 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/greene-county