Granite County, Montana Power Outages, 2020 to 2023

This county is not rated. Its numbers may not reflect what residents experienced.

Granite County, Montana had 1 major outage from 2020 to 2023

Not rated

We show this record but do not rank it because the history is short, the population is very small, or customer counts look too high for the population. Treat these numbers with caution. Data confidence: Low, with 4 years of records.

0.2major outages per year

1 of 4years with a major outage

8 hrslongest major outage

May, Junhardest months

May and June made up 50% of this county's outage time. The largest outage on record began May 15, 2020, reached 1,673 customers, and left at least 200 customers out for 6.8 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.

10K

15K

20K

2020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2020	19,990	8	0
2021	12,182	9	0
2022	13,120	7	1
2023	7,202	5	0

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
May 15, 2020	6.8	1,673	6,934
Jun 8, 2020	4.5	1,062	4,569
Nov 5, 2022	3.0	1,904	3,441
Jun 14, 2020	5.5	1,044	3,393
Feb 1, 2023	3.5	933	3,266

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.