County annual report · FIPS 12109
2021 St. Johns County, FL Power Outage Report
In 2021, customers in St. Johns County, FL went without power for an average of 1.7 hours, a total of 198K customer-hours (Florida average 1.9 hours). That ranks 47th worst of 67 Florida counties and 2360th 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 St. Johns 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 22, 2021 12:30 | June 23, 2021 02:45 | 14h 15m | 9,031 | 6,473 |
| 2 | September 8, 2021 12:45 | September 9, 2021 07:45 | 19h | 5,713 | 5,076 |
| 3 | September 21, 2021 11:45 | September 22, 2021 23:45 | 1d 12h | 4,781 | 4,048 |
| 4 | May 28, 2021 21:00 | May 29, 2021 15:00 | 18h | 4,400 | 3,761 |
| 5 | December 7, 2021 00:30 | December 7, 2021 21:00 | 20h 30m | 4,226 | 5,469 |
| 6 | January 31, 2021 15:15 | January 31, 2021 19:30 | 4h 15m | 3,751 | 6,850 |
| 7 | November 5, 2021 08:30 | November 7, 2021 19:45 | 2d 11h | 3,670 | 22K |
| 8 | June 9, 2021 21:30 | June 9, 2021 23:00 | 1h 30m | 3,599 | 4,814 |
| 9 | April 20, 2021 11:15 | April 21, 2021 08:15 | 21h | 3,553 | 4,006 |
| 10 | March 12, 2021 22:45 | March 12, 2021 23:45 | 1h | 3,101 | 776 |
Outage episodes by size in 2021: 145 reached 100+ customers, 49 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 St. Johns 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 |
|---|---|---|---|---|---|
| Florida Power & Light Co | 2021 | 55 min | 0.58 | 45 min | 0.51 |
| Beaches Energy Services | 2021 | 43 min | 0.53 | - | - |
| 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 98% of Florida's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 116,593 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. St. Johns County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), St. Johns 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/st-johns-county