massoutage

County annual report · FIPS 06045

2020 Mendocino County, CA Power Outage Report

In 2020, customers in Mendocino County, CA went without power for an average of 8.6 hours, a total of 335K customer-hours (California average 6.3 hours). That ranks 22nd worst of 57 California counties and 898th of 3,019 nationally.

Summary data CSVJSON
Avg hrs / customer
8.6
39,041 customers
Customer-hours out
335K
Peak customers out
3,766
Outages ≥1,000 out
18
0 of 10,000+ · 587 total
Longest outage
6d
began September 7, 2020
Rank in state
22nd/57
898th of 3,019 US

Compared with CA, the US and 2019

Mendocino County, CA average hours without power per customer compared with state and national averages, 2020Mendocino County 8.6 hours, California average 6.3 hours, US average 8.7 hours, Mendocino County, 2019 107.2 hoursMendocino CountyMendocino County8.6hCalifornia averageCalifornia average6.3hUS averageUS average8.7hMendocino County, 2019Mendocino County, 20…107.2h
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Average hours without power per customer in 2020; last bar is this county in 2019.

Month by month

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Mendocino County, CA customer-hours without power by month, 2020Jan 90K, Feb 7,712, Mar 39K, Apr 12K, May 16K, Jun 22K, Jul 33K, Aug 43K, Sep 24K, Oct 28K, Nov 12K, Dec 11K025k50k75k100k90KJan7,712Feb39KMar12KApr16KMay22KJun33KJul43KAug24KSep28KOct12KNov11KDec
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Customer-hours; January was the worst month.

Mendocino County year over year

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Mendocino County, CA: average hours without power per customer by year2015: no data; 2016: no data; 2017: 0.0h; 2018: 11.1h, coverage 91%; 2019: 107.2h, coverage 93%; 2020: 8.6h, coverage 94%; 2021: 35.5h, coverage 95%; 2022: 12.4h, coverage 95%; 2023: 48.5h; 2024: 37.9h; 2025: 19.1h0501001500%50%100%n/a2015n/a20160.0h201711.1h2018107.2h20198.6h202035.5h202112.4h202248.5h202337.9h202419.1h2025
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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 California customers tracked each year.

Biggest outages in Mendocino County, 2020

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1August 15, 2020 01:30August 15, 2020 04:453h 15m3,7667,533
2March 15, 2020 09:15March 18, 2020 02:302d 17h2,62022K
3December 26, 2020 23:45December 27, 2020 04:154h 30m2,480784
4April 1, 2020 14:30April 3, 2020 02:151d 11h2,4523,714
5January 16, 2020 11:30January 21, 2020 00:304d 13h2,31782K
6July 28, 2020 22:00July 29, 2020 12:3014h 30m1,8947,984
7July 7, 2020 16:00July 8, 2020 08:0016h1,8053,640
8February 17, 2020 17:30February 17, 2020 18:0030m1,682421
9August 17, 2020 15:45August 19, 2020 02:451d 11h1,6585,976
10November 21, 2020 20:00November 21, 2020 23:153h 15m1,3912,050

Outage episodes by size in 2020: 121 reached 100+ customers, 18 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 Mendocino County reported on EIA Form 861 for 2020, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Pacific Gas & Electric Co.20207.4 hrs1.342.3 hrs1.04
City of Ukiah - (CA)-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 94% of California's customers in 2020; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 39,041 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. Mendocino County has data for 2017–2025.

Cite this report

MassOutage (massoutage.com), Mendocino County, CA annual power outage report, 2020, 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/2020/california/mendocino-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON