massoutage

County annual report · FIPS 33019

2015 Sullivan County, NH Power Outage Report

In 2015, customers in Sullivan County, NH went without power for an average of 16.9 hours, a total of 339K customer-hours (New Hampshire average 2.3 hours). That ranks 1st worst of 10 New Hampshire counties and 147th of 2,484 nationally.

Summary data CSVJSON
Avg hrs / customer
16.9
20,079 customers
Customer-hours out
339K
Peak customers out
19,880
Outages ≥1,000 out
10
1 of 10,000+ · 257 total
Longest outage
1d 17h
began July 19, 2015
Rank in state
1st/10
147th of 2,484 US

Compared with NH, the US

Sullivan County, NH average hours without power per customer compared with state and national averages, 2015Sullivan County 16.9 hours, New Hampshire average 2.3 hours, US average 2.9 hoursSullivan CountySullivan County16.9hNew Hampshire averageNew Hampshire average2.3hUS averageUS average2.9h
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Average hours without power per customer in 2015.

Month by month

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Sullivan County, NH customer-hours without power by month, 2015Jan 2,363, Feb 2,121, Mar 2,035, Apr 1,680, May 26, Jun 17K, Jul 260K, Aug 31K, Sep 9,189, Oct 11K, Nov 1,467, Dec 6130100k200k300k2,363Jan2,121Feb2,035Mar1,680Apr26May17KJun260KJul31KAug9,189Sep11KOct1,467Nov613Dec
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Customer-hours; July was the worst month.

Sullivan County year over year

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Sullivan County, NH: average hours without power per customer by year2015: 16.9h; 2016: 5.0h; 2017: 11.9h; 2018: 18.1h, coverage 88%; 2019: 8.8h, coverage 99%; 2020: 13.0h, coverage 99%; 2021: 5.9h, coverage 99%; 2022: 19.5h, coverage 99%; 2023: 15.1h; 2024: 14.2h; 2025: 10.2h051015200%50%100%16.9h20155.0h201611.9h201718.1h20188.8h201913.0h20205.9h202119.5h202215.1h202314.2h202410.2h2025
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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 Hampshire customers tracked each year.

Biggest outages in Sullivan 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 19, 2015 22:30July 21, 2015 16:151d 17h19,880252K
2September 9, 2015 00:30September 9, 2015 02:001h 30m5,2847,845
3October 25, 2015 11:15October 25, 2015 20:159h3,2544,942
4August 3, 2015 21:30August 4, 2015 17:4520h 15m2,92923K
5June 28, 2015 14:30June 29, 2015 06:1515h 45m2,50210K
6October 30, 2015 03:00October 30, 2015 07:004h1,7282,253
7June 30, 2015 18:45June 30, 2015 23:455h1,4485,561
8August 15, 2015 20:45August 16, 2015 06:159h 30m1,1362,331
9October 29, 2015 17:45October 30, 2015 02:158h 30m1,1261,279
10November 5, 2015 16:15November 5, 2015 17:0045m1,051526

Outage episodes by size in 2015: 55 reached 100+ customers, 10 reached 1,000+ customers, 1 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 Sullivan 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
Public Service Co of NH20151.9 hrs1.091.8 hrs1.05
Liberty Utilities (Granite State Electri20152.2 hrs0.8075 min0.72
New Hampshire Elec 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 New Hampshire's customers in 2015; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 20,079 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. Sullivan County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Sullivan County, NH 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-hampshire/sullivan-county

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