County annual report · FIPS 12065
2021 Jefferson County, FL Power Outage Report
In 2021, customers in Jefferson County, FL went without power for an average of 9.7 hours, a total of 70K customer-hours (Florida average 1.9 hours). That ranks 3rd worst of 67 Florida counties and 798th of 2,974 nationally.
Compared with FL, the US and 2020
Coverage line is EAGLE-I's share of Florida customers tracked each year.
Biggest outages in Jefferson 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 | June 21, 2021 16:30 | June 22, 2021 02:45 | 10h 15m | 2,122 | 4,515 |
| 2 | September 9, 2021 04:00 | September 9, 2021 21:45 | 17h 45m | 1,918 | 11K |
| 3 | September 5, 2021 09:00 | September 5, 2021 13:30 | 4h 30m | 1,827 | 2,396 |
| 4 | June 29, 2021 19:45 | June 30, 2021 04:30 | 8h 45m | 1,113 | 4,622 |
| 5 | September 10, 2021 04:15 | September 10, 2021 06:45 | 2h 30m | 1,077 | 1,639 |
| 6 | August 11, 2021 20:30 | August 11, 2021 22:30 | 2h | 1,001 | 835 |
| 7 | August 1, 2021 22:00 | August 2, 2021 13:45 | 15h 45m | 915 | 9,454 |
| 8 | September 25, 2021 23:15 | September 26, 2021 00:45 | 1h 30m | 851 | 1,118 |
| 9 | September 28, 2021 18:45 | September 28, 2021 22:30 | 3h 45m | 851 | 643 |
| 10 | August 15, 2021 13:45 | August 15, 2021 16:00 | 2h 15m | 763 | 1,146 |
Outage episodes by size in 2021: 67 reached 100+ customers, 6 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 Jefferson 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 |
|---|---|---|---|---|---|
| Duke Energy Florida, LLC | 2021 | 1.6 hrs | 1.04 | 90 min | 1.00 |
| Tri-County Electric Coop, Inc (FL) | 2021 | 4.1 hrs | 2.56 | 2.9 hrs | 2.16 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 98% of Florida's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,283 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, FL 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/florida/jefferson-county