Anchorage Municipality, Alaska Power Outages, 2017 to 2023

Anchorage Municipality, Alaska had 18 major outages from 2017 to 2023

Below middle outage time among US counties

Residents here averaged 0.46 times the US outage time per person and 0.46 times the Alaska rate. It ranks 5 of 6 in the state, where 1 has the most. Data confidence: High, with 7 years of records.

2.6major outages per year

7 of 7years with a major outage

59 hrslongest major outage

Sep, Novhardest months

September and November made up 36% of this county's outage time. The largest outage on record began Sep 1, 2023, reached 64,266 customers, and left at least 200 customers out for 11.5 hours.

Outage time per resident, rated Alaska counties

MostLeast

Outage impact by year

Customer-hours without power. 1,000 customers out for 2 hours is 2,000 customer-hours.

0.25M

0.5M

0.75M

2017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2017	98,117	52	1
2018	244,939	91	2
2019	193,685	74	2
2020	121,247	67	1
2021	210,494	97	1
2022	490,272	135	5
2023	907,016	110	6

When outages hit

Share of this county's customer-hours by month.

10%

15%

20%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Sep 1, 2023	11.5	64,266	223,527
May 14, 2023	12.0	66,516	139,631
Nov 9, 2023	59.2	7,321	133,499
Apr 24, 2018	13.8	16,409	91,356
Aug 31, 2023	15.2	17,597	89,138

Hours measure how long at least 200 customers in the county were out. Most customers get power back sooner.

Size your backup battery

Start with what you would keep running. Wattages are typical averages, so check your own appliances.

Phones, Wi-Fi, lights, about 60 WRefrigerator, about 60 WChest freezer, about 40 WGas furnace fan, about 160 W

Hours to cover: 24

1,700 Whof battery capacity, allowing for about 15% conversion loss

If anyone relies on medical equipment, plan that with their provider. Run portable fuel generators outdoors only, at least 20 feet from doors, windows and vents. See the outage checklist.

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How to read this

A major outage lasted at least 8 hours and reached customers equal to at least 1% of county residents.
Records cover outages of at least 200 customers in a county. They do not show what happened on your street.
Utilities that do not report can make a county look better than it is. Data ends in 2023. Read the full method.