massoutage

2020 US Power Outage Report

In 2020, the average US customer went without power for about 8.7 hours — the 3rd worst of the 11 years on record, 1.3× the decade average. Figures are from DOE/ORNL EAGLE-I and include major storm days.

Avg hrs / customer
8.7
Customer-hours out
1304.8M
Rank (worst)
3rd
States with data
50

2020 in context — the last decade

Average hours without power per US customer.

2.9h20153.9h20167.4h20175.6h20184.7h20198.7h20208.9h20218.3h20227.1h202312.6h20245.9h2025

Hardest-hit states in 2020

By longest average outage per customer (SAIDI). Storm-heavy states dominate.

#StateAvg hrs / customerPeak customers out
1Louisiana72.6180,496
2Maine36.965,190
3Oklahoma27.7193,316
4Iowa27.4114,873
5Alabama22.1143,114
6North Carolina20.392,710
7Mississippi18.597,348
8New Jersey17.5216,332
9West Virginia11.413,280
10Arkansas10.524,409
11New York10.4197,669
12Rhode Island9.984,135

Hardest-hit counties in 2020

By peak customers out during the year's worst event.

Biggest single outages of 2020

CountyBeganPeak customers out
Cook County, ILAugust 5, 2020279,858
Ocean County, NJAugust 3, 2020216,332
Monmouth County, NJAugust 2, 2020202,864
Suffolk County, NYJuly 19, 2020197,669
Oklahoma County, OKOctober 26, 2020193,316
Jefferson Parish, LAOctober 28, 2020180,496
Fulton County, GAOctober 19, 2020178,832
Orleans Parish, LAOctober 28, 2020160,779
Escambia County, FLSeptember 15, 2020156,882
Oakland County, MIFebruary 10, 2020156,519

Source: DOE/ORNL EAGLE-I (15-minute county outage records; major disturbances from DOE OE-417). “Avg hours per customer” is a SAIDI-like measure — total outage customer-minutes divided by tracked customers. Coverage varies by year and utility.