massoutage

County annual report · FIPS 06105

2021 Trinity County, CA Power Outage Report

In 2021, customers in Trinity County, CA went without power for an average of - hours, a total of 205K customer-hours (California average 6.6 hours).

Summary data CSVJSON
Avg hrs / customer
-
Customer-hours out
205K
Peak customers out
1,413
Outages ≥1,000 out
1
0 of 10,000+ · 153 total
Longest outage
8d 2h
began August 14, 2021
Rank in state
-

Compared with CA, the US and 2020

Trinity County, CA average hours without power per customer compared with state and national averages, 2021California average 6.6 hours, US average 8.9 hoursCalifornia averageCalifornia average6.6hUS averageUS average8.9h
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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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Trinity County, CA customer-hours without power by month, 2021Jan 25K, Feb 2,647, Mar 2,652, Apr 932, May 1,805, Jun 3,163, Jul 390, Aug 45K, Sep 18K, Oct 2,171, Nov 567, Dec 103K050k100k150k25KJan2,647Feb2,652Mar932Apr1,805May3,163Jun390Jul45KAug18KSep2,171Oct567Nov103KDec
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Customer-hours; December was the worst month.

Trinity County year over year

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Trinity County, CA: average hours without power per customer by year2015: no data; 2016: no data; 2017: no data; 2018: no data, coverage 91%; 2019: no data, coverage 93%; 2020: no data, coverage 94%; 2021: no data, coverage 95%; 2022: no data, coverage 95%; 2023: no data; 2024: no data; 2025: no data00.30.50.810%50%100%n/a2015n/a2016n/a2017n/a2018n/a2019n/a2020n/a2021n/a2022n/a2023n/a2024n/a2025
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Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

No loaded years to plot yet.

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

Biggest outages in Trinity County, 2021

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1December 25, 2021 11:15December 31, 2021 00:155d 13h1,41392K
2January 27, 2021 03:15February 1, 2021 23:155d 20h98919K
3August 7, 2021 02:30August 14, 2021 01:006d 22h87716K
4December 15, 2021 19:30December 17, 2021 10:001d 14h8523,351
5August 2, 2021 20:15August 3, 2021 07:3011h 15m7247,111
6September 23, 2021 05:00September 23, 2021 22:0017h724627
7September 24, 2021 16:15September 24, 2021 23:006h 45m7244,295
8December 14, 2021 05:45December 14, 2021 09:003h 15m714307
9December 19, 2021 15:15December 20, 2021 00:309h 15m7142,146
10December 14, 2021 15:00December 14, 2021 19:304h 30m7133,209

Outage episodes by size in 2021: 25 reached 100+ customers, 1 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 Trinity 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
Pacific Gas & Electric Co.202110.4 hrs1.843.6 hrs1.32
WAPA-- Western Area Power Administration-----
Trinity Public Utilities Dist-----

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 ÷ modeled 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. Trinity County has data for 2017–2025.

Cite this report

MassOutage (massoutage.com), Trinity 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/trinity-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON