massoutage

County annual report · FIPS 06041

2020 Marin County, CA Power Outage Report

In 2020, customers in Marin County, CA went without power for an average of 8.3 hours, a total of 941K customer-hours (California average 6.3 hours). That ranks 25th worst of 57 California counties and 920th of 3,019 nationally.

Summary data CSVJSON
Avg hrs / customer
8.3
113,044 customers
Customer-hours out
941K
Peak customers out
51,695
Outages ≥1,000 out
30
2 of 10,000+ · 666 total
Longest outage
4d 15h
began August 14, 2020
Rank in state
25th/57
920th of 3,019 US

Compared with CA, the US and 2019

Marin County, CA average hours without power per customer compared with state and national averages, 2020Marin County 8.3 hours, California average 6.3 hours, US average 8.7 hours, Marin County, 2019 68.0 hoursMarin CountyMarin County8.3hCalifornia averageCalifornia average6.3hUS averageUS average8.7hMarin County, 2019Marin County, 201968.0h
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Average hours without power per customer in 2020; last bar is this county in 2019.

Month by month

CSVJSON
Marin County, CA customer-hours without power by month, 2020Jan 27K, Feb 46K, Mar 34K, Apr 25K, May 27K, Jun 26K, Jul 36K, Aug 255K, Sep 30K, Oct 370K, Nov 38K, Dec 27K0100k200k300k400k27KJan46KFeb34KMar25KApr27KMay26KJun36KJul255KAug30KSep370KOct38KNov27KDec
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Customer-hours; October was the worst month.

Marin County year over year

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Marin County, CA: average hours without power per customer by year2015: no data; 2016: no data; 2017: 0.0h; 2018: 2.0h, coverage 91%; 2019: 68.0h, coverage 93%; 2020: 8.3h, coverage 94%; 2021: 7.8h, coverage 95%; 2022: 5.6h, coverage 95%; 2023: 13.7h; 2024: 17.6h; 2025: 6.9h0204060800%50%100%n/a2015n/a20160.0h20172.0h201868.0h20198.3h20207.8h20215.6h202213.7h202317.6h20246.9h2025
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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 Marin 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 14, 2020 15:30August 19, 2020 07:154d 15h51,695237K
2October 26, 2020 01:45October 27, 2020 22:151d 20h14,842349K
3October 31, 2020 13:00November 1, 2020 05:4516h 45m5,88311K
4July 28, 2020 14:30July 29, 2020 11:1520h 45m4,9454,024
5July 9, 2020 14:45July 10, 2020 02:4512h4,8852,920
6February 9, 2020 15:15February 13, 2020 00:153d 9h4,61215K
7November 13, 2020 07:00November 14, 2020 19:151d 12h4,22113K
8December 10, 2020 21:00December 10, 2020 21:3030m4,1431,050
9December 15, 2020 15:15December 15, 2020 22:457h 30m4,0532,736
10April 13, 2020 01:30April 13, 2020 23:4522h 15m4,0114,948

Outage episodes by size in 2020: 164 reached 100+ customers, 30 reached 1,000+ customers, 2 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 Marin 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

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 ÷ 113,044 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. Marin County has data for 2017–2025.

Cite this report

MassOutage (massoutage.com), Marin 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/marin-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON