massoutage

County annual report · FIPS 06027

2021 Inyo County, CA Power Outage Report

In 2021, customers in Inyo County, CA went without power for an average of 6.7 hours, a total of 49K customer-hours (California average 6.6 hours). That ranks 33rd worst of 57 California counties and 1063rd of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
6.7
7,201 customers
Customer-hours out
49K
Peak customers out
4,614
Outages ≥1,000 out
3
0 of 10,000+ · 140 total
Longest outage
2d 5h
began May 18, 2021
Rank in state
33rd/57
1063rd of 2,974 US

Compared with CA, the US and 2020

Inyo County, CA average hours without power per customer compared with state and national averages, 2021Inyo County 6.7 hours, California average 6.6 hours, US average 8.9 hours, Inyo County, 2020 5.2 hoursInyo CountyInyo County6.7hCalifornia averageCalifornia average6.6hUS averageUS average8.9hInyo County, 2020Inyo County, 20205.2h
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Average hours without power per customer in 2021; last bar is this county in 2020.

Month by month

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Inyo County, CA customer-hours without power by month, 2021Jan 5,624, Feb 5,696, Mar 4,098, Apr 3,155, May 569, Jun 3,292, Jul 1,184, Aug 965, Sep 2,058, Oct 16K, Nov 2,152, Dec 4,13705k10k15k20k5,624Jan5,696Feb4,098Mar3,155Apr569May3,292Jun1,184Jul965Aug2,058Sep16KOct2,152Nov4,137Dec
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Customer-hours; October was the worst month.

Inyo County year over year

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Inyo County, CA: average hours without power per customer by year2015: 6.5h; 2016: 3.6h; 2017: 9.3h; 2018: 5.0h, coverage 91%; 2019: 10.5h, coverage 93%; 2020: 5.2h, coverage 94%; 2021: 6.7h, coverage 95%; 2022: 12.9h, coverage 95%; 2023: 20.8h; 2024: 9.9h; 2025: 33.2h0102030400%50%100%6.5h20153.6h20169.3h20175.0h201810.5h20195.2h20206.7h202112.9h202220.8h20239.9h202433.2h2025
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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 California customers tracked each year.

Biggest outages in Inyo County, 2021

The 10 outage episodes with the most customers out at once. Times are UTC.

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#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1October 3, 2021 07:00October 3, 2021 09:452h 45m4,61412K
2January 5, 2021 03:45January 5, 2021 05:001h 15m2,6053,256
3September 26, 2021 04:00September 26, 2021 06:002h1,0931,984
4June 24, 2021 13:15June 24, 2021 19:005h 45m802223
5December 30, 2021 16:00December 31, 2021 00:158h 15m6484,044
6March 4, 2021 16:30March 5, 2021 01:158h 45m3922,451
7February 25, 2021 02:30February 26, 2021 00:1521h 45m3771,372
8February 26, 2021 16:30February 27, 2021 00:007h 30m3351,317
9June 29, 2021 02:15June 29, 2021 04:001h 45m299523
10October 11, 2021 19:30October 12, 2021 05:3010h2872,056

Outage episodes by size in 2021: 25 reached 100+ customers, 3 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 Inyo County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Southern California Edison Co20213.0 hrs1.111.7 hrs0.96
Valley Electric Assn, Inc202187 min0.7734 min0.47
Los Angeles Department of Water & Power20212.3 hrs0.762.3 hrs0.76

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 95% of California's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 7,201 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. Inyo County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Inyo County, CA 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/california/inyo-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON