massoutage

County annual report · FIPS 78030

2021 St. Thomas Island, VI Power Outage Report

In 2021, customers in St. Thomas Island, VI went without power for an average of 56.3 hours, a total of 1.3M customer-hours (U.S. Virgin Islands average 32.8 hours). That ranks 2nd worst of 3 U.S. Virgin Islands counties.

Summary data CSVJSON
Avg hrs / customer
56.3
22,725 customers
Customer-hours out
1.3M
Peak customers out
22,620
Outages ≥1,000 out
56
14 of 10,000+ · 536 total
Longest outage
36d 5h
began March 15, 2021
Rank in state
2nd/3

Compared with VI, the US and 2020

St. Thomas Island, VI average hours without power per customer compared with state and national averages, 2021St. Thomas Island 56.3 hours, U.S. Virgin Islands average 32.8 hours, US average (50 states and DC) 8.4 hours, St. Thomas Island, 2020 45.9 hoursSt. Thomas IslandSt. Thomas Island56.3hU.S. Virgin Islands averageU.S. Virgin Islands …32.8hUS average (50 states and DC)US average (50 state…8.4hSt. Thomas Island, 2020St. Thomas Island, 2…45.9h
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Average hours without power per customer in 2021; last bar is this county in 2020.

Month by month

CSVJSON
St. Thomas Island, VI customer-hours without power by month, 2021Jan 177K, Feb 16K, Mar 27K, Apr 102K, May 70K, Jun 430K, Jul 42K, Aug 139K, Sep 160K, Oct 24K, Nov 86K, Dec 4,0960200k400k600k177KJan16KFeb27KMar102KApr70KMay430KJun42KJul139KAug160KSep24KOct86KNov4,096Dec
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Customer-hours; June was the worst month.

St. Thomas Island year over year

CSVJSON
St. Thomas Island, VI: average hours without power per customer by year2015: no data; 2016: no data; 2017: no data; 2018: no data; 2019: 75.3h, coverage 100%; 2020: 45.9h, coverage 100%; 2021: 56.3h, coverage 100%; 2022: 55.4h, coverage 100%; 2023: 50.8h; 2024: 169.5h; 2025: 158.9h0501001502000%50%100%n/a2015n/a2016n/a2017n/a201875.3h201945.9h202056.3h202155.4h202250.8h2023169.5h2024158.9h2025
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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 U.S. Virgin Islands customers tracked each year.

Biggest outages in St. Thomas Island, 2021

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1June 18, 2021 02:15June 18, 2021 16:0013h 45m22,620241K
2January 9, 2021 20:00January 13, 2021 01:453d 5h22,564143K
3August 14, 2021 19:30August 15, 2021 10:1514h 45m22,51686K
4September 6, 2021 08:15September 6, 2021 22:3014h 15m22,280114K
5August 14, 2021 10:45August 14, 2021 13:002h 15m22,2499,800
6March 15, 2021 20:30April 21, 2021 02:1536d 5h20,80198K
7November 4, 2021 22:00November 5, 2021 13:3015h 30m17,39816K
8November 20, 2021 17:15November 21, 2021 11:0017h 45m17,27649K
9November 14, 2021 20:30November 15, 2021 14:4518h 15m16,86012K
10June 13, 2021 23:30June 14, 2021 05:306h13,69565K

Outage episodes by size in 2021: 101 reached 100+ customers, 56 reached 1,000+ customers, 14 reached 10,000+ customers.

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 100% of U.S. Virgin Islands's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 22,725 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. Thomas Island has data for 2019–2025.

Cite this report

MassOutage (massoutage.com), St. Thomas Island, VI annual power outage report, 2021, data as of Oct 14, 2026 13:35 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/). https://massoutage.com/reports/2021/us-virgin-islands/st-thomas-island

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON
St. Thomas Island by year:202520242023202220202019
Live outages in St. Thomas Island2021 U.S. Virgin Islands report2021 US report