massoutage

County annual report · FIPS 10003

2017 New Castle County, DE Power Outage Report

In 2017, customers in New Castle County, DE went without power for an average of 5.5 hours, a total of 1.0M customer-hours (Delaware average 2.9 hours). That ranks 1st worst of 3 Delaware counties and 907th of 2,786 nationally.

Summary data CSVJSON
Avg hrs / customer
5.5
191,056 customers
Customer-hours out
1.0M
Peak customers out
33,074
Outages ≥1,000 out
58
2 of 10,000+ · 672 total
Longest outage
3d 19h
began March 14, 2017
Rank in state
1st/3
907th of 2,786 US

Compared with DE, the US and 2016

New Castle County, DE average hours without power per customer compared with state and national averages, 2017New Castle County 5.5 hours, Delaware average 2.9 hours, US average 7.4 hours, New Castle County, 2016 3.8 hoursNew Castle CountyNew Castle County5.5hDelaware averageDelaware average2.9hUS averageUS average7.4hNew Castle County, 2016New Castle County, 2…3.8h
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Average hours without power per customer in 2017; last bar is this county in 2016.

Month by month

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New Castle County, DE customer-hours without power by month, 2017Jan 45K, Feb 24K, Mar 633K, Apr 88K, May 30K, Jun 36K, Jul 44K, Aug 73K, Sep 29K, Oct 27K, Nov 2,505, Dec 16K0200k400k600k800k45KJan24KFeb633KMar88KApr30KMay36KJun44KJul73KAug29KSep27KOct2,505Nov16KDec
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Customer-hours; March was the worst month.

New Castle County year over year

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New Castle County, DE: average hours without power per customer by year2015: 5.7h; 2016: 3.8h; 2017: 5.5h; 2018: 4.9h, coverage 86%; 2019: 2.8h, coverage 86%; 2020: 7.7h, coverage 86%; 2021: 2.1h, coverage 86%; 2022: 2.4h, coverage 86%; 2023: 4.5h; 2024: 4.6h; 2025: 3.9h024680%50%100%5.7h20153.8h20165.5h20174.9h20182.8h20197.7h20202.1h20212.4h20224.5h20234.6h20243.9h2025
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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 Delaware customers tracked each year.

Biggest outages in New Castle County, 2017

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1March 14, 2017 08:15March 18, 2017 03:303d 19h33,074617K
2April 6, 2017 13:30April 8, 2017 11:151d 21h12,77778K
3June 19, 2017 10:15June 21, 2017 09:301d 23h7,09213K
4October 4, 2017 11:45October 5, 2017 01:4514h5,5505,091
5August 1, 2017 06:30August 4, 2017 05:452d 23h4,62529K
6January 26, 2017 11:45January 27, 2017 05:3017h 45m3,5061,926
7December 11, 2017 12:00December 11, 2017 19:457h 45m2,9121,544
8February 6, 2017 12:00February 7, 2017 03:1515h 15m2,8762,914
9March 31, 2017 20:45April 1, 2017 18:1521h 30m2,8433,532
10October 29, 2017 11:45October 31, 2017 01:001d 13h2,8254,531

Outage episodes by size in 2017: 197 reached 100+ customers, 58 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 New Castle County reported on EIA Form 861 for 2017, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Delmarva Power20173.1 hrs1.1986 min0.98
New Castle Municipal Serv Comm201763 min1.2463 min1.24
Town of Smyrna - (DE)-----
City of Newark - (DE)-----
Town of Middletown - (DE)-----

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 Delaware's customers in 2017; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 191,056 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. New Castle County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), New Castle County, DE annual power outage report, 2017, 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/2017/delaware/new-castle-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON