massoutage

County annual report · FIPS 12053

2021 Hernando County, FL Power Outage Report

In 2021, customers in Hernando County, FL went without power for an average of 1.3 hours, a total of 139K customer-hours (Florida average 1.9 hours). That ranks 60th worst of 67 Florida counties and 2557th of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
1.3
108,453 customers
Customer-hours out
139K
Peak customers out
4,154
Outages ≥1,000 out
21
0 of 10,000+ · 1,240 total
Longest outage
20h 45m
began April 11, 2021
Rank in state
60th/67
2557th of 2,974 US

Compared with FL, the US and 2020

Hernando County, FL average hours without power per customer compared with state and national averages, 2021Hernando County 1.3 hours, Florida average 1.9 hours, US average 8.9 hours, Hernando County, 2020 2.1 hoursHernando CountyHernando County1.3hFlorida averageFlorida average1.9hUS averageUS average8.9hHernando County, 2020Hernando County, 20202.1h
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Average hours without power per customer in 2021; last bar is this county in 2020.

Month by month

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Hernando County, FL customer-hours without power by month, 2021Jan 17K, Feb 6,383, Mar 8,983, Apr 8,546, May 4,383, Jun 18K, Jul 22K, Aug 9,666, Sep 8,813, Oct 21K, Nov 11K, Dec 3,626010k20k30k17KJan6,383Feb8,983Mar8,546Apr4,383May18KJun22KJul9,666Aug8,813Sep21KOct11KNov3,626Dec
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Customer-hours; July was the worst month.

Hernando County year over year

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Hernando County, FL: average hours without power per customer by year2015: 1.7h; 2016: 2.8h; 2017: 10.4h; 2018: 1.6h, coverage 97%; 2019: 2.6h, coverage 97%; 2020: 2.1h, coverage 97%; 2021: 1.3h, coverage 98%; 2022: 1.8h, coverage 98%; 2023: 2.3h; 2024: 29.8h; 2025: 1.5h01020300%50%100%1.7h20152.8h201610.4h20171.6h20182.6h20192.1h20201.3h20211.8h20222.3h202329.8h20241.5h2025
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Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Coverage line is EAGLE-I's share of Florida customers tracked each year.

Biggest outages in Hernando County, 2021

The 10 outage episodes with the most customers out at once. Times are UTC.

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#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1July 17, 2021 13:15July 17, 2021 18:305h 15m4,1549,434
2October 28, 2021 12:45October 29, 2021 03:4515h3,1199,969
3June 8, 2021 23:15June 9, 2021 04:455h 30m3,0462,793
4March 22, 2021 12:15March 22, 2021 19:307h 15m2,9422,927
5February 9, 2021 13:15February 9, 2021 18:455h 30m2,823715
6January 24, 2021 23:30January 25, 2021 09:009h 30m2,8179,036
7July 23, 2021 22:45July 24, 2021 02:454h2,2131,436
8October 19, 2021 14:45October 19, 2021 20:305h 45m2,2002,498
9February 2, 2021 13:45February 2, 2021 17:153h 30m2,1051,587
10June 28, 2021 07:00June 29, 2021 00:4517h 45m1,9002,449

Outage episodes by size in 2021: 112 reached 100+ customers, 21 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 Hernando County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Duke Energy Florida, LLC20211.6 hrs1.0490 min1.00
Withlacoochee River Elec Coop20211.8 hrs1.491.8 hrs1.49
Sumter Electric Coop, Inc-----

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 ÷ 108,453 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. Hernando County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Hernando 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/hernando-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON