massoutage

County annual report · FIPS 56029

2015 Park County, WY Power Outage Report

In 2015, customers in Park County, WY went without power for an average of 0.4 hours, a total of 5,287 customer-hours (Wyoming average 0.4 hours). That ranks 1st worst of 1 Wyoming counties and 2138th of 2,484 nationally.

Summary data CSVJSON
Avg hrs / customer
0.4
14,005 customers
Customer-hours out
5,287
Peak customers out
327
Outages ≥1,000 out
0
0 of 10,000+ · 4 total
Longest outage
9h 15m
began April 23, 2015
Rank in state
1st/1
2138th of 2,484 US

Compared with WY, the US

Park County, WY average hours without power per customer compared with state and national averages, 2015Park County 0.4 hours, Wyoming average 0.4 hours, US average 2.9 hoursPark CountyPark County0.4hWyoming averageWyoming average0.4hUS averageUS average2.9h
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Average hours without power per customer in 2015.

Month by month

CSVJSON
Park County, WY customer-hours without power by month, 2015Jan 0, Feb 0, Mar 0, Apr 3,006, May 2,036, Jun 245, Jul 0, Aug 0, Sep 0, Oct 0, Nov 0, Dec 001k2k3k4k0Jan0Feb0Mar3,006Apr2,036May245Jun0Jul0Aug0Sep0Oct0Nov0Dec
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Customer-hours; April was the worst month.

Park County year over year

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Park County, WY: average hours without power per customer by year2015: 0.4h; 2016: no data; 2017: 0.6h; 2018: 0.6h, coverage 62%; 2019: 0.6h, coverage 68%; 2020: 1.0h, coverage 71%; 2021: 1.2h, coverage 71%; 2022: 2.1h, coverage 71%; 2023: 1.6h; 2024: 2.5h; 2025: 2.6h01230%50%100%0.4h2015n/a20160.6h20170.6h20180.6h20191.0h20201.2h20212.1h20221.6h20232.5h20242.6h2025
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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 Wyoming customers tracked each year.

Biggest outages in Park County, 2015

The 4 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1June 2, 2015 07:15June 2, 2015 08:0045m327245
2May 16, 2015 14:15May 16, 2015 18:454h 30m3261,467
3April 23, 2015 22:30April 24, 2015 07:459h 15m3253,006
4May 6, 2015 16:15May 6, 2015 18:001h 45m325569

Outage episodes by size in 2015: 4 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 Park County reported on EIA Form 861 for 2015, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
PacifiCorp20154.8 hrs1.802.9 hrs1.33
NorthWestern Energy LLC - (MT)20154.3 hrs1.561.9 hrs1.32
Big Horn Rural Electric Co20153.4 hrs1.30--
WAPA-- Western Area Power Administration-----
NorthWestern Energy-----
High Plains Power Inc-----
Beartooth Electric Coop, Inc-----
Garland Light & Power Company-----
City of Cody-----
City of Powell - (WY)-----
Willwood Light & Power Company-----

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 2015; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 14,005 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. Park County has data for 2015, 2017–2025.

Cite this report

MassOutage (massoutage.com), Park County, WY annual power outage report, 2015, 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/2015/wyoming/park-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON