massoutage

County annual report · FIPS 36075

2015 Oswego County, NY Power Outage Report

In 2015, customers in Oswego County, NY went without power for an average of 3.9 hours, a total of 224K customer-hours (New York average 1.6 hours). That ranks 20th worst of 62 New York counties and 724th of 2,484 nationally.

Summary data CSVJSON
Avg hrs / customer
3.9
57,759 customers
Customer-hours out
224K
Peak customers out
9,002
Outages ≥1,000 out
22
0 of 10,000+ · 602 total
Longest outage
1d 11h
began September 9, 2015
Rank in state
20th/62
724th of 2,484 US

Compared with NY, the US

Oswego County, NY average hours without power per customer compared with state and national averages, 2015Oswego County 3.9 hours, New York average 1.6 hours, US average 2.9 hoursOswego CountyOswego County3.9hNew York averageNew York average1.6hUS averageUS average2.9h
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Average hours without power per customer in 2015.

Month by month

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Oswego County, NY customer-hours without power by month, 2015Jan 5,852, Feb 1,202, Mar 7,801, Apr 13K, May 10K, Jun 21K, Jul 28K, Aug 28K, Sep 60K, Oct 23K, Nov 18K, Dec 8,720020k40k60k5,852Jan1,202Feb7,801Mar13KApr10KMay21KJun28KJul28KAug60KSep23KOct18KNov8,720Dec
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Customer-hours; September was the worst month.

Oswego County year over year

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Oswego County, NY: average hours without power per customer by year2015: 3.9h; 2016: 3.9h; 2017: 4.3h; 2018: 10.1h, coverage 98%; 2019: 4.6h, coverage 98%; 2020: 2.5h, coverage 99%; 2021: 6.2h, coverage 99%; 2022: 5.4h, coverage 99%; 2023: 3.2h; 2024: 6.4h; 2025: 5.8h0510150%50%100%3.9h20153.9h20164.3h201710.1h20184.6h20192.5h20206.2h20215.4h20223.2h20236.4h20245.8h2025
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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 New York customers tracked each year.

Biggest outages in Oswego County, 2015

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1July 1, 2015 11:45July 2, 2015 01:1513h 30m9,00217K
2November 6, 2015 14:30November 7, 2015 09:1518h 45m6,7984,330
3September 11, 2015 07:00September 11, 2015 09:302h 30m6,78913K
4September 9, 2015 12:00September 10, 2015 23:451d 11h5,9157,043
5October 28, 2015 15:00October 29, 2015 04:4513h 45m4,81614K
6August 18, 2015 16:15August 20, 2015 00:151d 8h3,45124K
7September 14, 2015 08:30September 14, 2015 15:156h 45m2,9507,248
8November 13, 2015 15:30November 14, 2015 04:4513h 15m2,8905,389
9April 27, 2015 13:00April 27, 2015 14:301h 30m2,284572
10June 6, 2015 08:45June 6, 2015 12:153h 30m2,2726,769

Outage episodes by size in 2015: 103 reached 100+ customers, 22 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 Oswego 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
Niagara Mohawk Power Corp.20152.2 hrs1.072.1 hrs1.02

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 New York's customers in 2015; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 57,759 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. Oswego County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Oswego County, NY 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/new-york/oswego-county

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