Valley County, Montana Power Outages, 2019 to 2023

Valley County, Montana had 2 major outages from 2019 to 2023

Above middle outage time among US counties

Residents here averaged 1.02 times the US outage time per person and 1.76 times the Montana rate. It ranks 8 of 34 in the state, where 1 has the most. Data confidence: Medium, with 5 years of records.

0.4major outages per year

2 of 5years with a major outage

15 hrslongest major outage

Nov, Julhardest months

November and July made up 44% of this county's outage time. The largest outage on record began Nov 5, 2021, reached 3,174 customers, and left at least 200 customers out for 7.0 hours.

Outage time per resident, rated Montana counties

MostLeast

Outage impact by year

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

20K

40K

60K

80K

2019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2019	5,621	6	0
2020	16,900	12	0
2021	58,956	17	1
2022	6,028	5	0
2023	4,976	5	1

When outages hit

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

10%

20%

30%

40%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Nov 5, 2021	7.0	3,174	21,424
Jul 23, 2021	3.8	3,217	8,626
Jan 14, 2021	15.2	356	5,329
May 21, 2020	7.5	628	4,458
Mar 8, 2021	1.5	2,890	4,003

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.