massoutage

County annual report · FIPS 56031

2025 Platte County, WY Power Outage Report

In 2025, customers in Platte County, WY went without power for an average of - hours, a total of 5,240 customer-hours (Wyoming average 3.8 hours).

Summary data CSVJSON
Avg hrs / customer
-
Customer-hours out
5,240
Peak customers out
459
Outages ≥1,000 out
0
0 of 10,000+ · 19 total
Longest outage
17h 30m
began December 17, 2025
Rank in state
-

Compared with WY, the US and 2024

Platte County, WY average hours without power per customer compared with state and national averages, 2025Wyoming average 3.8 hours, US average 5.9 hoursWyoming averageWyoming average3.8hUS averageUS average5.9h
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Average hours without power per customer in 2025; last bar is this county in 2024.

Month by month

CSVJSON
Platte County, WY customer-hours without power by month, 2025Jan 0, Feb 13, Mar 2, Apr 0, May 0, Jun 4, Jul 462, Aug 225, Sep 8, Oct 0, Nov 1,299, Dec 3,22801k2k3k4k0Jan13Feb2Mar0Apr0May4Jun462Jul225Aug8Sep0Oct1,299Nov3,228Dec
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Customer-hours; December was the worst month.

Platte County year over year

CSVJSON
Platte County, WY: average hours without power per customer by year2015: no data; 2016: no data; 2017: no data; 2018: no data, coverage 62%; 2019: no data, coverage 68%; 2020: no data, coverage 71%; 2021: no data, coverage 71%; 2022: no data, coverage 71%; 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 Wyoming customers tracked each year.

Biggest outages in Platte County, 2025

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1December 17, 2025 20:15December 18, 2025 13:4517h 30m4592,995
2November 13, 2025 20:00November 14, 2025 00:004h3471,299
3December 19, 2025 20:00December 20, 2025 01:305h 30m59234
4August 19, 2025 14:45August 19, 2025 17:453h5751
5July 4, 2025 23:15July 5, 2025 05:156h56291
6August 15, 2025 22:00August 16, 2025 00:302h 30m56140
7July 4, 2025 20:00July 4, 2025 22:002h3060
8July 3, 2025 23:00July 4, 2025 00:451h 45m2951
9July 29, 2025 16:30July 29, 2025 21:455h 15m1158
10July 31, 2025 23:45August 1, 2025 11:3011h 45m527

Outage episodes by size in 2025: 2 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 Platte 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
PacifiCorp20244.6 hrs1.672.0 hrs1.11
Wyrulec Company20183.0 hrs1.0371 min0.72
WAPA-- Western Area Power Administration-----
Niobrara Electric Assn, Inc-----
Wheatland Rural Elec Assn, Inc-----
Town of Guernsey - (WY)-----
Town of Wheatland - (WY)-----

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 Wyoming's customers in 2025; 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. Platte County has data for 2017–2025.

Cite this report

MassOutage (massoutage.com), Platte County, WY 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2025/wyoming/platte-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON