massoutage

County annual report · FIPS 30033

2023 Garfield County, MT Power Outage Report

In 2023, customers in Garfield County, MT went without power for an average of 0.0 hours, a total of 4 customer-hours (Montana average 1.8 hours). That ranks 50th worst of 50 Montana counties and 2969th of 2,977 nationally.

Summary data CSVJSON
Avg hrs / customer
0.0
1,613 customers
Customer-hours out
4
Peak customers out
1
Outages ≥1,000 out
0
0 of 10,000+ · 2 total
Longest outage
2h 30m
began November 29, 2023
Rank in state
50th/50
2969th of 2,977 US

Compared with MT, the US and 2021

Garfield County, MT average hours without power per customer compared with state and national averages, 2023Garfield County 0.0 hours, Montana average 1.8 hours, US average 7.1 hours, Garfield County, 2021 0.0 hoursGarfield CountyGarfield County0.0hMontana averageMontana average1.8hUS averageUS average7.1hGarfield County, 2021Garfield County, 20210.0h
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Average hours without power per customer in 2023; last bar is this county in 2021.

Month by month

CSVJSON
Garfield County, MT customer-hours without power by month, 2023Jan 0, Feb 0, Mar 0, Apr 0, May 0, Jun 0, Jul 0, Aug 1, Sep 0, Oct 0, Nov 3, Dec 001230Jan0Feb0Mar0Apr0May0Jun0Jul1Aug0Sep0Oct3Nov0Dec
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Customer-hours; November was the worst month.

Garfield County year over year

CSVJSON
Garfield County, MT: average hours without power per customer by year2015: no data; 2016: no data; 2017: no data; 2018: no data; 2019: no data; 2020: 0.0h, coverage 76%; 2021: 0.0h, coverage 76%; 2022: no data; 2023: 0.0h; 2024: 0.1h; 2025: 0.0h0000.10%50%100%n/a2015n/a2016n/a2017n/a2018n/a20190.0h20200.0h2021n/a20220.0h20230.1h20240.0h2025
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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 Montana customers tracked each year.

Biggest outages in Garfield County, 2023

The 2 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1August 25, 2023 17:00August 25, 2023 18:001h11
2November 29, 2023 17:15November 29, 2023 19:452h 30m13

Outage episodes by size in 2023: 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 Garfield County reported on EIA Form 861 for 2023, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
WAPA-- Western Area Power Administration-----
McCone Electric Coop Inc-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Montana's customers in 2023; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 1,613 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. Garfield County has data for 2020–2021, 2023–2025.

Cite this report

MassOutage (massoutage.com), Garfield County, MT annual power outage report, 2023, 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/). https://massoutage.com/reports/2023/montana/garfield-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON
Garfield County by year:2025202420212020
Live outages in Garfield County2023 Montana report2023 US report