massoutage

County annual report · FIPS 37081

2015 Guilford County, NC Power Outage Report

In 2015, customers in Guilford County, NC went without power for an average of 14.8 hours, a total of 618K customer-hours (North Carolina average 7.5 hours). That ranks 18th worst of 93 North Carolina counties and 172nd of 2,484 nationally.

Summary data CSVJSON
Avg hrs / customer
14.8
41,756 customers
Customer-hours out
618K
Peak customers out
13,672
Outages ≥1,000 out
42
2 of 10,000+ · 724 total
Longest outage
6d 21h
began September 30, 2015
Rank in state
18th/93
172nd of 2,484 US

Compared with NC, the US

Guilford County, NC average hours without power per customer compared with state and national averages, 2015Guilford County 14.8 hours, North Carolina average 7.5 hours, US average 2.9 hoursGuilford CountyGuilford County14.8hNorth Carolina averageNorth Carolina avera…7.5hUS averageUS average2.9h
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Average hours without power per customer in 2015.

Month by month

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Guilford County, NC customer-hours without power by month, 2015Jan 8,320, Feb 171K, Mar 16K, Apr 48K, May 40K, Jun 82K, Jul 83K, Aug 33K, Sep 49K, Oct 68K, Nov 8,586, Dec 10K050k100k150k200k8,320Jan171KFeb16KMar48KApr40KMay82KJun83KJul33KAug49KSep68KOct8,586Nov10KDec
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Customer-hours; February was the worst month.

Guilford County year over year

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Guilford County, NC: average hours without power per customer by year2015: 14.8h; 2016: 12.8h; 2017: 18.8h; 2018: 170.5h, coverage 82%; 2019: 33.0h, coverage 90%; 2020: 31.5h, coverage 91%; 2021: 57.1h, coverage 92%; 2022: 65.8h, coverage 92%; 2023: 28.5h; 2024: 22.7h; 2025: 15.3h0501001502000%50%100%14.8h201512.8h201618.8h2017170.5h201833.0h201931.5h202057.1h202165.8h202228.5h202322.7h202415.3h2025
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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 North Carolina customers tracked each year.

Biggest outages in Guilford County, 2015

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1June 23, 2015 12:30June 24, 2015 07:1518h 45m13,67213K
2June 30, 2015 11:30July 2, 2015 23:152d 11h11,96761K
3May 25, 2015 11:30May 25, 2015 16:455h 15m8,5858,689
4February 26, 2015 06:15February 28, 2015 03:451d 21h8,35990K
5February 15, 2015 00:00February 17, 2015 05:302d 5h6,00363K
6May 19, 2015 11:30May 19, 2015 11:4515m5,4641,366
7August 5, 2015 04:30August 8, 2015 02:002d 21h5,14619K
8September 25, 2015 03:00September 30, 2015 03:455d4,45540K
9May 26, 2015 11:30May 26, 2015 23:3012h3,80413K
10July 30, 2015 04:00July 31, 2015 12:001d 8h3,7538,982

Outage episodes by size in 2015: 134 reached 100+ customers, 42 reached 1,000+ customers, 2 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 Guilford 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
Duke Energy Progress - (NC)20154.8 hrs1.903.0 hrs1.65
Duke Energy Carolinas, LLC20155.3 hrs1.292.6 hrs1.02
EnergyUnited Elec Member Corp20152.2 hrs1.121.6 hrs0.96
Town of High Point20151.6 hrs1.2560 min0.89
Duke Energy-----

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 North Carolina's customers in 2015; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 41,756 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. Guilford County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Guilford County, NC 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/north-carolina/guilford-county

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