massoutage

2021 US Power Outage Report

In 2021, the average US customer tracked by EAGLE-I went without power for about 8.4 hours, the 2nd worst of the 11 loaded years (2015–2025). Figures include major storm days.

Avg hrs / customer
8.4
Customer-hours out
1268.3M
EAGLE-I coverage
92%
of US customers
Largest county peak
455,986
customers out at once
Outage events
1,288,736
Counties reporting
2,991

2021 in context

US: average hours without power per customer by year2015: 2.8h; 2016: 3.8h; 2017: 7.3h; 2018: 5.3h, coverage 88%; 2019: 4.6h, coverage 91%; 2020: 8.0h, coverage 89%; 2021: 8.4h, coverage 92%; 2022: 6.2h, coverage 92%; 2023: 6.7h; 2024: 11.2h; 2025: 5.3h0510150%50%100%2.8h20153.8h20167.3h20175.3h20184.6h20198.0h20208.4h20216.2h20226.7h202311.2h20245.3h2025
Use the arrow keys to read values.
Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Month by month, 2021

Customer-hours without power each month; February was the worst.

CSVJSON
US customer-hours without power by month, 2021Jan 65.2M, Feb 347.7M, Mar 40.1M, Apr 33.7M, May 47.5M, Jun 58.9M, Jul 78.3M, Aug 184.5M, Sep 230.2M, Oct 70.4M, Nov 28.9M, Dec 82.8M0100M200M300M400M65.2MJan347.7MFeb40.1MMar33.7MApr47.5MMay58.9MJun78.3MJul184.5MAug230.2MSep70.4MOct28.9MNov82.8MDec
Use the arrow keys to read values.

Hardest-hit counties in 2021

Top 25 two ways: per customer (counties tracking at least 1,000 customers, so tiny counties don't swing the list) and total customer-hours (where the most people were affected).

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Lafourche Parish, LA492.417.6M35,70535,705467
2St. Helena Parish, LA476.62.0M4,1624,162704
3Plumas County, CA392.13.6M9,2309,230189
4St. John the Baptist Parish, LA338.97.5M22,09219,726437
5Tangipahoa Parish, LA300.616.4M54,54354,543317
6Terrebonne Parish, LA296.512.0M40,57727,666473
7St. Charles Parish, LA296.29.0M30,26522,708388
8St. James Parish, LA269.63.1M11,4999,931411
9Livingston Parish, LA253.414.2M56,10156,101674
10Assumption Parish, LA237.81.6M6,7386,738462
11Plaquemines Parish, LA226.33.2M14,01012,572420
12Jefferson Parish, LA211.848.9M230,746204,888401
13Ascension Parish, LA197.110.2M51,70651,706351
14Lunenburg County, VA194.2937K4,8274,827421
15Lawrence County, KY192.91.7M8,5538,553451
16Robertson County, TX180.7498K2,7552,755767
17Wayne County, WV180.44.1M22,99518,901411
18Charlotte County, VA175.2902K5,1485,148441
19Limestone County, TX164.0696K4,2414,241724
20Orleans Parish, LA154.933.0M212,936181,040550
21Carter County, KY152.82.0M12,83511,506611
22Elliott County, KY151.5665K4,3903,545345
23Cass County, MI149.9513K3,4233,423776
24Austin County, TX149.71.5M9,7809,780354
25East Feliciana Parish, LA149.21.1M7,3477,347729

States in 2021

Ranked by average hours without power per customer. Change compares with the closest earlier loaded year; coverage is EAGLE-I's share of the state's customers.

CSVJSON
#StateHrs / customervs prior yrCustomer-hoursPeak outCoverage
1Louisiana97.9▲ 53%236.5M1,015,26890%
2Michigan26.6▲ 173%128.8M873,85295%
3West Virginia21.4▲ 89%21.7M104,62797%
4Oregon20.5▲ 136%42.4M340,47990%
5Texas20.0▲ 295%274.9M3,787,62594%
6Mississippi17.2▼ 6%25.5M209,97377%
7Kentucky10.4▲ 121%24.2M153,85892%
8North Carolina8.8▼ 46%17.2M106,63392%
9Washington8.7▲ 107%30.1M563,78887%
10Virginia8.6▲ 42%34.2M300,90197%
11Nebraska8.3▲ 496%7.5M198,00848%
12Rhode Island8.1▼ 18%4.1M105,42099%
13Massachusetts7.3▲ 37%24.1M716,14199%
14Alaska7.0▲ 68%1.9M17,90568%
15California6.6▲ 6%104.5M405,06795%
16Maine6.4▼ 83%5.2M48,38996%
17Hawaii6.0▲ 125%3.0M33,265100%
18Idaho5.7▲ 12%5.3M48,92690%
19Arkansas5.4▼ 48%8.9M73,85986%
20Montana4.9▼ 12%3.0M34,24776%
21Wisconsin4.7▲ 160%14.5M174,13085%
22Alabama4.6▼ 79%11.8M134,84281%
23Missouri4.5▲ 58%13.0M119,58195%
24Indiana4.4▲ 12%14.3M68,84286%
25Vermont4.3▲ 11%1.6M23,183100%
26Ohio4.2▼ 19%23.5M160,84693%
27Pennsylvania4.1▼ 36%25.4M122,45098%
28Kansas4.0▲ 149%5.8M346,18480%
29Tennessee3.7▼ 44%12.5M153,36973%
30New Hampshire3.4▼ 51%2.6M40,13299%
31South Dakota3.4▼ 27%1.6M17,57179%
32Oklahoma3.2▼ 88%6.6M211,12593%
33New Jersey2.9▼ 83%12.0M93,90499%
34Colorado2.8▲ 26%7.8M134,64983%
35Iowa2.7▼ 90%4.3M146,39691%
36New York2.6▼ 74%22.1M196,96499%
37Utah2.6▼ 70%3.3M22,60379%
38New Mexico2.6▲ 5%2.6M51,12082%
39Maryland2.5▲ 15%6.7M60,71699%
40Georgia2.4▼ 68%12.3M90,12390%
41Illinois2.3▼ 61%13.7M196,48998%
42Wyoming2.2▼ 34%716K7,54671%
43South Carolina2.1▼ 63%6.1M98,63999%
44Minnesota2.0▼ 5%5.6M75,77280%
45Arizona1.9▲ 48%6.1M77,76191%
46Florida1.9▼ 48%21.3M88,13698%
47District of Columbia1.9▲ 25%613K14,359100%
48Nevada1.7▲ 41%2.4M40,70597%
49Delaware1.3▼ 69%682K14,03486%
50North Dakota1.0▼ 24%456K15,31566%
51Connecticut--3.7M36,82295%

Territories in 2021

Reported on their own: not ranked with the states, and not part of the national figures above.

TerritoryHrs / customerCustomer-hoursCoverage
U.S. Virgin Islands32.81.8M100%
Puerto Rico27.340.5M100%

Biggest single outages of 2021

The 25 county outage episodes with the most customers out at once.

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Harris County, TXJanuary 1, 2021 00:00June 28, 2021 09:00178d 9h455,98617.8M
2Tarrant County, TXFebruary 11, 2021 13:00February 28, 2021 05:3016d 16h367,31618.6M
3Dallas County, TXFebruary 8, 2021 12:30March 4, 2021 07:4523d 19h358,65016.8M
4Bexar County, TXFebruary 13, 2021 10:45February 21, 2021 11:008d329,78216.7M
5Plymouth County, MAOctober 26, 2021 16:15October 28, 2021 15:301d 23h281,6724.9M
6Travis County, TXFebruary 11, 2021 14:45February 24, 2021 13:0012d 22h273,84917.6M
7Wayne County, MIAugust 11, 2021 22:15October 21, 2021 01:4570d 3h265,44424.4M
8King County, WAJanuary 11, 2021 15:15January 24, 2021 15:1513d215,5864.0M
9Jefferson Parish, LAAugust 28, 2021 19:00October 21, 2021 02:0053d 7h204,88847.5M
10Orleans Parish, LAAugust 29, 2021 04:30September 27, 2021 06:1529d 1h181,04032.0M
11Fort Bend County, TXFebruary 16, 2021 18:00February 23, 2021 07:006d 13h171,6605.2M
12East Baton Rouge Parish, LAAugust 29, 2021 11:15October 5, 2021 15:1537d 4h165,54915.8M
13Oakland County, MIMay 16, 2021 06:45October 21, 2021 01:45157d 19h159,87124.8M
14Sacramento County, CAJanuary 24, 2021 08:45February 1, 2021 11:158d 2h156,2632.4M
15Galveston County, TXFebruary 15, 2021 03:00February 22, 2021 07:007d 4h144,4216.5M
16Brazoria County, TXFebruary 14, 2021 12:30April 13, 2021 04:3057d 16h144,1646.5M
17Collin County, TXFebruary 14, 2021 14:45February 22, 2021 12:157d 21h143,8036.3M
18Douglas County, NEJuly 10, 2021 04:45July 18, 2021 05:158d138,3274.6M
19Montgomery County, TXFebruary 14, 2021 20:00February 24, 2021 10:459d 14h135,4124.8M
20Williamson County, TXFebruary 11, 2021 14:15February 23, 2021 06:1511d 16h134,4186.3M
21St. Tammany Parish, LAAugust 29, 2021 10:45September 19, 2021 22:3021d 11h130,11415.9M
22Norfolk County, MAOctober 26, 2021 10:15October 28, 2021 15:302d 5h126,7401.7M
23Plymouth County, MAOctober 28, 2021 20:30November 6, 2021 02:308d 6h125,4773.4M
24Denton County, TXFebruary 14, 2021 13:45February 21, 2021 11:456d 22h125,2456.1M
25Multnomah County, ORFebruary 11, 2021 17:00February 25, 2021 08:3013d 15h125,1156.3M
EAGLE-I tracked about 92% of US electricity customers in 2021; utilities it does not see are missing from every figure here. “Hrs per customer” divides outage customer-minutes by modeled county customers (a SAIDI-like measure including major event days), so it is not the EIA-861 SAIDI utilities file.