County annual report · FIPS 12057
2021 Hillsborough County, FL Power Outage Report
In 2021, customers in Hillsborough County, FL went without power for an average of 1.4 hours, a total of 1.4M customer-hours (Florida average 1.9 hours). That ranks 56th worst of 67 Florida counties and 2492nd 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 Hillsborough 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 | April 10, 2021 13:15 | April 17, 2021 00:30 | 6d 11h | 13,971 | 247K |
| 2 | June 27, 2021 11:15 | July 23, 2021 20:30 | 26d 9h | 11,846 | 202K |
| 3 | February 9, 2021 12:30 | February 10, 2021 04:00 | 15h 30m | 8,273 | 18K |
| 4 | November 7, 2021 07:00 | November 19, 2021 09:30 | 12d 2h | 7,513 | 25K |
| 5 | November 23, 2021 11:45 | November 24, 2021 01:15 | 13h 30m | 6,293 | 3,605 |
| 6 | August 28, 2021 19:45 | October 21, 2021 02:15 | 53d 6h | 6,127 | 157K |
| 7 | October 21, 2021 05:00 | November 7, 2021 06:00 | 17d 1h | 5,803 | 63K |
| 8 | May 1, 2021 09:45 | May 3, 2021 09:15 | 1d 23h | 5,514 | 7,727 |
| 9 | July 25, 2021 17:15 | July 27, 2021 08:15 | 1d 15h | 5,348 | 8,977 |
| 10 | August 11, 2021 10:45 | August 12, 2021 17:15 | 1d 6h | 5,224 | 17K |
Outage episodes by size in 2021: 162 reached 100+ customers, 89 reached 1,000+ customers, 2 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 Hillsborough 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 |
| Peace River Electric Coop, Inc | 2021 | 1.8 hrs | 1.05 | 1.8 hrs | 1.05 |
| Tampa Electric Co | 2021 | 1.7 hrs | 1.38 | 66 min | 0.99 |
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 ÷ 998,906 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. Hillsborough County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hillsborough 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/hillsborough-county