County annual report · FIPS 12089
2023 Nassau County, FL Power Outage Report
In 2023, customers in Nassau County, FL went without power for an average of 3.6 hours, a total of 189K customer-hours (Florida average 3.4 hours). That ranks 28th worst of 67 Florida counties and 1753rd of 2,977 nationally.
Compared with FL, the US and 2022
Coverage line is EAGLE-I's share of Florida customers tracked each year.
Biggest outages in Nassau 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 30, 2023 10:45 | September 1, 2023 03:15 | 1d 16h | 11,255 | 81K |
| 2 | June 15, 2023 00:30 | June 16, 2023 02:30 | 1d 2h | 6,989 | 17K |
| 3 | August 5, 2023 15:45 | August 6, 2023 07:30 | 15h 45m | 3,996 | 3,978 |
| 4 | September 27, 2023 14:00 | September 27, 2023 21:00 | 7h | 3,599 | 913 |
| 5 | June 13, 2023 18:00 | June 14, 2023 22:45 | 1d 4h | 3,209 | 8,604 |
| 6 | December 11, 2023 01:15 | December 11, 2023 19:00 | 17h 45m | 3,176 | 5,745 |
| 7 | July 23, 2023 17:30 | July 24, 2023 21:45 | 1d 4h | 2,682 | 8,342 |
| 8 | December 14, 2023 16:45 | December 14, 2023 23:00 | 6h 15m | 2,375 | 1,125 |
| 9 | May 12, 2023 21:45 | May 13, 2023 00:30 | 2h 45m | 2,073 | 521 |
| 10 | April 13, 2023 15:00 | April 14, 2023 01:30 | 10h 30m | 1,842 | 1,206 |
Outage episodes by size in 2023: 72 reached 100+ customers, 14 reached 1,000+ customers, 1 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 Nassau 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 |
|---|---|---|---|---|---|
| Florida Power & Light Co | 2023 | 78 min | 0.64 | 50 min | 0.51 |
| Okefenoke Rural El Member Corp | 2023 | 13.1 hrs | 4.63 | 4.1 hrs | 3.02 |
| Florida Public Utilities Co | - | - | - | - | - |
| JEA | - | - | - | - | - |
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 Florida's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 52,493 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. Nassau County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Nassau County, FL 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/florida/nassau-county