massoutage

County annual report · FIPS 56027

2020 Niobrara County, WY Power Outage Report

In 2020, customers in Niobrara County, WY went without power for an average of - hours, a total of 1,568 customer-hours (Wyoming average 3.4 hours).

Summary data CSVJSON
Avg hrs / customer
-
Customer-hours out
1,568
Peak customers out
162
Outages ≥1,000 out
0
0 of 10,000+ · 99 total
Longest outage
19h 45m
began February 5, 2020
Rank in state
-

Compared with WY, the US and 2019

Niobrara County, WY average hours without power per customer compared with state and national averages, 2020Wyoming average 3.4 hours, US average 8.0 hoursWyoming averageWyoming average3.4hUS averageUS average8.0h
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Average hours without power per customer in 2020; last bar is this county in 2019.

Month by month

CSVJSON
Niobrara County, WY customer-hours without power by month, 2020Jan 151, Feb 257, Mar 278, Apr 204, May 665, Jun 13, Jul 0, Aug 0, Sep 0, Oct 0, Nov 0, Dec 00200400600800151Jan257Feb278Mar204Apr665May13Jun0Jul0Aug0Sep0Oct0Nov0Dec
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Customer-hours; May was the worst month.

Niobrara County year over year

CSVJSON
Niobrara County, WY: average hours without power per customer by year2015: no data; 2016: no data; 2017: 1.4h; 2018: 0.3h, coverage 62%; 2019: no data, coverage 68%; 2020: no data, coverage 71%; 2021: no data; 2022: no data; 2023: no data; 2024: no data; 2025: no data00.511.50%50%100%n/a2015n/a20161.4h20170.3h2018n/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).

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

Biggest outages in Niobrara County, 2020

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1April 30, 2020 17:00April 30, 2020 22:155h 15m162132
2May 13, 2020 17:15May 13, 2020 21:454h 30m15744
3May 11, 2020 13:00May 11, 2020 16:153h 15m106263
4May 20, 2020 01:45May 20, 2020 08:457h10684
5February 4, 2020 00:15February 4, 2020 15:3015h 15m4772
6March 17, 2020 12:30March 17, 2020 19:307h4697
7May 28, 2020 18:45May 28, 2020 21:002h 15m2638
8January 30, 2020 22:15January 31, 2020 03:155h1356
9February 3, 2020 14:45February 3, 2020 23:308h 45m1374
10February 5, 2020 03:15February 5, 2020 23:0019h 45m1361

Outage episodes by size in 2020: 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 Niobrara County reported on EIA Form 861 for 2020, 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-----
Niobrara Electric Assn, Inc-----
Town of Lusk - (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 71% of Wyoming's customers in 2020; utilities it does not see are not counted.
  • Hours per customer isn't shown for Niobrara County: there's no credible customer count to divide by (the modeled count is smaller than the outages recorded here).
  • 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. Niobrara County has data for 2017–2020.

Cite this report

MassOutage (massoutage.com), Niobrara County, WY annual power outage report, 2020, data as of Oct 14, 2026 13:35 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/). https://massoutage.com/reports/2020/wyoming/niobrara-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON