massoutage

County annual report · FIPS 22105

2017 Tangipahoa Parish, LA Power Outage Report

In 2017, customers in Tangipahoa Parish, LA went without power for an average of 29.5 hours, a total of 1.6M customer-hours (Louisiana average 7.2 hours). That ranks 7th worst of 64 Louisiana counties and 179th of 2,786 nationally.

Summary data CSVJSON
Avg hrs / customer
29.5
54,543 customers
Customer-hours out
1.6M
Peak customers out
34,037
Outages ≥1,000 out
31
2 of 10,000+ · 737 total
Longest outage
15d 18h
began September 10, 2017
Rank in state
7th/64
179th of 2,786 US

Compared with LA, the US and 2016

Tangipahoa Parish, LA average hours without power per customer compared with state and national averages, 2017Tangipahoa Parish 29.5 hours, Louisiana average 7.2 hours, US average 7.4 hours, Tangipahoa Parish, 2016 13.1 hoursTangipahoa ParishTangipahoa Parish29.5hLouisiana averageLouisiana average7.2hUS averageUS average7.4hTangipahoa Parish, 2016Tangipahoa Parish, 2…13.1h
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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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Tangipahoa Parish, LA customer-hours without power by month, 2017Jan 69K, Feb 7,188, Mar 14K, Apr 42K, May 89K, Jun 28K, Jul 27K, Aug 56K, Sep 30K, Oct 48K, Nov 3,250, Dec 1.2M0500k1M1.5M69KJan7,188Feb14KMar42KApr89KMay28KJun27KJul56KAug30KSep48KOct3,250Nov1.2MDec
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Customer-hours; December was the worst month.

Tangipahoa Parish year over year

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Tangipahoa Parish, LA: average hours without power per customer by year2015: 10.9h; 2016: 13.1h; 2017: 29.5h; 2018: 11.0h, coverage 89%; 2019: 24.9h, coverage 89%; 2020: 18.6h, coverage 90%; 2021: 323.1h, coverage 90%; 2022: 12.3h, coverage 91%; 2023: 11.7h; 2024: 29.1h; 2025: 11.2h01002003004000%50%100%10.9h201513.1h201629.5h201711.0h201824.9h201918.6h2020323.1h202112.3h202211.7h202329.1h202411.2h2025
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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 Louisiana customers tracked each year.

Biggest outages in Tangipahoa Parish, 2017

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

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#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1December 8, 2017 09:30December 12, 2017 09:003d 23h34,0371.2M
2January 24, 2017 14:15January 24, 2017 20:005h 45m10,0093,657
3August 13, 2017 08:00August 13, 2017 13:155h 15m8,19220K
4May 12, 2017 11:45May 15, 2017 22:003d 10h6,70447K
5May 7, 2017 18:45May 7, 2017 21:002h 15m5,4747,983
6May 20, 2017 09:45May 22, 2017 20:152d 10h4,8337,287
7April 30, 2017 05:15May 5, 2017 03:304d 22h4,82938K
8October 22, 2017 09:30October 23, 2017 17:451d 8h4,59230K
9December 8, 2017 05:00December 8, 2017 07:002h4,5295,837
10January 21, 2017 07:45January 22, 2017 23:451d 16h4,20813K

Outage episodes by size in 2017: 121 reached 100+ customers, 31 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 Tangipahoa Parish reported on EIA Form 861 for 2017, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Entergy Louisiana LLC20176.5 hrs2.102.9 hrs1.48
Dixie Electric Membership Corp - (LA)20179.7 hrs3.874.1 hrs2.97
Washington-St Tammany E C, Inc20177.3 hrs3.284.5 hrs2.88

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 Louisiana's customers in 2017; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 54,543 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. Tangipahoa Parish has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Tangipahoa Parish, LA 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/louisiana/tangipahoa-parish

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON