massoutage

County annual report · FIPS 08121

2021 Washington County, CO Power Outage Report

In 2021, customers in Washington County, CO went without power for an average of 0.1 hours, a total of 268 customer-hours (Colorado average 2.8 hours). That ranks 49th worst of 52 Colorado counties and 2932nd of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
0.1
4,309 customers
Customer-hours out
268
Peak customers out
47
Outages ≥1,000 out
0
0 of 10,000+ · 3 total
Longest outage
8h 30m
began July 10, 2021
Rank in state
49th/52
2932nd of 2,974 US

Compared with CO, the US and 2020

Washington County, CO average hours without power per customer compared with state and national averages, 2021Washington County 0.1 hours, Colorado average 2.8 hours, US average 8.9 hours, Washington County, 2020 0.3 hoursWashington CountyWashington County0.1hColorado averageColorado average2.8hUS averageUS average8.9hWashington County, 2020Washington County, 2…0.3h
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Average hours without power per customer in 2021; last bar is this county in 2020.

Month by month

CSVJSON
Washington County, CO customer-hours without power by month, 2021Jan 1, Feb 0, Mar 0, Apr 0, May 0, Jun 0, Jul 267, Aug 0, Sep 0, Oct 0, Nov 0, Dec 001002003001Jan0Feb0Mar0Apr0May0Jun267Jul0Aug0Sep0Oct0Nov0Dec
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Customer-hours; July was the worst month.

Washington County year over year

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Washington County, CO: average hours without power per customer by year2015: no data; 2016: no data; 2017: 0.0h; 2018: 0.2h, coverage 88%; 2019: 0.5h, coverage 83%; 2020: 0.3h, coverage 84%; 2021: 0.1h, coverage 83%; 2022: 0.0h, coverage 84%; 2023: 0.0h; 2024: 0.0h; 2025: 0.1h00.20.40.60%50%100%n/a2015n/a20160.0h20170.2h20180.5h20190.3h20200.1h20210.0h20220.0h20230.0h20240.1h2025
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Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Coverage line is EAGLE-I's share of Colorado customers tracked each year.

Biggest outages in Washington County, 2021

The 3 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1July 10, 2021 02:00July 10, 2021 10:308h 30m47262
2January 30, 2021 00:15January 30, 2021 01:151h11
3July 11, 2021 22:00July 12, 2021 02:454h 45m15

Outage episodes by size in 2021: 0 reached 100+ customers, 0 reached 1,000+ customers, 0 reached 10,000+ customers.

Utility reliability filed with the EIA

SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Washington County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Public Service Co of Colorado20213.0 hrs1.202.2 hrs1.00
Mountain View Elec Assn, Inc202150 min0.5650 min0.56
Y-W Electric Assn Inc202118 min-18 min-
WAPA-- Western Area Power Administration-----
Highline Electric Assn-----
Morgan County Rural Elec Assn-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 83% of Colorado's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 4,309 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
  • An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
  • Years loaded: 2015–2025. Washington County has data for 2017–2025.

Cite this report

MassOutage (massoutage.com), Washington County, CO annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/colorado/washington-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON