massoutage

County annual report · FIPS 30033

2025 Garfield County, MT Power Outage Report

In 2025, customers in Garfield County, MT went without power for an average of 0.0 hours, a total of 28 customer-hours (Montana average 6.8 hours). That ranks 50th worst of 51 Montana counties and 2968th of 3,000 nationally.

Summary data CSVJSON
Avg hrs / customer
0.0
1,613 customers
Customer-hours out
28
Peak customers out
1
Outages ≥1,000 out
0
0 of 10,000+ · 3 total
Longest outage
19h 45m
began September 23, 2025
Rank in state
50th/51
2968th of 3,000 US

Compared with MT, the US and 2024

Garfield County, MT average hours without power per customer compared with state and national averages, 2025Garfield County 0.0 hours, Montana average 6.8 hours, US average 5.9 hours, Garfield County, 2024 0.1 hoursGarfield CountyGarfield County0.0hMontana averageMontana average6.8hUS averageUS average5.9hGarfield County, 2024Garfield County, 20240.1h
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Average hours without power per customer in 2025; last bar is this county in 2024.

Month by month

CSVJSON
Garfield County, MT customer-hours without power by month, 2025Jan 5, Feb 0, Mar 0, Apr 0, May 0, Jun 0, Jul 0, Aug 0, Sep 20, Oct 0, Nov 0, Dec 4051015205Jan0Feb0Mar0Apr0May0Jun0Jul0Aug20Sep0Oct0Nov4Dec
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Customer-hours; September 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, 2025

The 3 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1January 12, 2025 16:45January 12, 2025 21:455h15
2September 23, 2025 21:00September 24, 2025 16:4519h 45m120
3December 3, 2025 18:45December 3, 2025 22:153h 30m14

Outage episodes by size in 2025: 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 2025, 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 2025; 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, 2025, 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/2025/montana/garfield-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON
Garfield County by year:2024202320212020
Live outages in Garfield County2025 Montana report2025 US report