PowerOutageHistory
AReliability Grade

Rio Blanco CountyPower Outage History

20192020 · Colorado

Top 20% most reliable nationally — infrequent, short outages.

How grades are calculated

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Reliability Rank
Higher percentile = more reliable
Nationwide99th pct
In Colorado98th pct
Total events
21
Avg duration
1.8 hrs
Longest outage
8 hrs
Customers served
5,635
Utility customers in county

Outages by year

Outages by month (seasonality)

Worst outage events on record

DateDurationCustomers affectedCause
Aug 26, 2020<1 hr466 (8%)Drought
Aug 12, 2020<1 hr209 (4%)Drought
Nov 29, 20205 hrs202 (4%)Drought
Jun 30, 20202 hrs200 (4%)Thunderstorm Wind
Sep 26, 2020<1 hr187 (3%)Drought

Over the 2 years from 2019 to 2020, Rio Blanco County recorded 21 distinct power outage events, averaging 1.8 hours per event.

The single worst outage on record in Rio Blanco County started August 26, 2020 (Drought), lasting less than 1 hour and leaving up to 466 customers without power (8% of the county) at its peak.

August has historically been the worst month for outages in Rio Blanco County, with 5 events recorded during that month across the dataset.

Based on this history, Rio Blanco County earns a Reliability Grade of A, placing it in the 99th percentile nationally for grid reliability (higher percentile = more reliable).

Sized for Rio Blanco County's outage profile

See more picks in our Best Small Power Stations (Under 1,000Wh) roundup.

Outage-prep kit

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Similar counties in Colorado

Counties with the closest reliability grade and national percentile to Rio Blanco County.

CountyGradeNational percentile
Baca CountyA98th
Washington CountyA98th
Montezuma CountyA100th
Gunnison CountyA97th
Grand CountyA95th

Most reliable counties in Colorado

The top 3 counties in Colorado by reliability grade and percentile.

CountyGradeNational percentile
Rio Blanco CountyA99th
Baca CountyA98th
Washington CountyA98th

Least reliable counties in Colorado

The bottom 3 counties in Colorado by reliability grade and percentile.

CountyGradeNational percentile
Clear Creek CountyF16th
Cheyenne CountyD20th
Jackson CountyD22nd

Most reliable counties nationally

The top 3 counties nationally by reliability grade and percentile.

CountyStateGradeNational percentile
Clay CountySouth DakotaA100th
Clearwater CountyMinnesotaA99th
Limestone CountyAlabamaA99th

Least reliable counties nationally

The bottom 3 counties nationally by reliability grade and percentile.

CountyStateGradeNational percentile
Clay CountyWest VirginiaF0th
Lincoln CountyWest VirginiaF0th
Cameron ParishLouisianaF0th

FAQ

How often does power go out in Rio Blanco County?

Between 2019 and 2020, Rio Blanco County recorded 21 outage events, averaging 1.8 hours each.

What is Rio Blanco County's reliability grade?

Rio Blanco County has a Reliability Grade of A, in the 99th national percentile.

What was the worst power outage in Rio Blanco County?

The worst outage on record started August 26, 2020 (Drought), lasting less than 1 hour and affecting up to 466 customers.

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Data: ORNL EAGLE-I Recorded Electricity Outages (2014–2025), CC BY 4.0. Storm names: NOAA Storm Events Database. Last data refresh: 2020. See methodology.