Jefferson County, Colorado Power Outages, 2015 to 2023

Jefferson County, Colorado had 15 major outages from 2015 to 2023

Below middle outage time among US counties

Residents here averaged 0.48 times the US outage time per person and 1.44 times the Colorado rate. It ranks 11 of 44 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

1.7major outages per year

8 of 9years with a major outage

68 hrslongest major outage

May, Marhardest months

May and March made up 38% of this county's outage time. The largest outage on record began May 21, 2022, reached 57,450 customers, and left at least 200 customers out for 67.5 hours.

Outage time per resident, rated Colorado counties

MostLeast

Outage impact by year

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

0.5M

1.5M

2015'152016'162017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	261,629	190	0
2016	402,551	178	1
2017	352,550	193	1
2018	480,932	235	1
2019	1,012,799	207	1
2020	589,826	226	4
2021	825,315	278	2
2022	1,517,088	298	3
2023	672,700	329	2

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 21, 2022	67.5	57,450	907,602
Mar 13, 2019	63.8	33,384	591,552
Dec 15, 2021	36.0	26,543	301,934
Jun 6, 2020	57.0	14,351	189,504
Mar 23, 2016	45.8	12,204	158,804

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.