massoutage

County annual report · FIPS 50007

2022 Chittenden County, VT Power Outage Report

In 2022, customers in Chittenden County, VT went without power for an average of 4.5 hours, a total of 514K customer-hours (Vermont average 13.6 hours). That ranks 14th worst of 14 Vermont counties and 1519th of 2,976 nationally.

Summary data CSVJSON
Avg hrs / customer
4.5
113,089 customers
Customer-hours out
514K
Peak customers out
18,073
Outages ≥1,000 out
17
2 of 10,000+ · 839 total
Longest outage
5d 15h
began December 23, 2022
Rank in state
14th/14
1519th of 2,976 US

Compared with VT, the US and 2021

Chittenden County, VT average hours without power per customer compared with state and national averages, 2022Chittenden County 4.5 hours, Vermont average 13.6 hours, US average 8.3 hours, Chittenden County, 2021 1.6 hoursChittenden CountyChittenden County4.5hVermont averageVermont average13.6hUS averageUS average8.3hChittenden County, 2021Chittenden County, 2…1.6h
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Average hours without power per customer in 2022; last bar is this county in 2021.

Month by month

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Chittenden County, VT customer-hours without power by month, 2022Jan 3,250, Feb 5,488, Mar 3,697, Apr 104K, May 8,344, Jun 9,435, Jul 18K, Aug 6,772, Sep 13K, Oct 2,015, Nov 7,474, Dec 332K0100k200k300k400k3,250Jan5,488Feb3,697Mar104KApr8,344May9,435Jun18KJul6,772Aug13KSep2,015Oct7,474Nov332KDec
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Customer-hours; December was the worst month.

Chittenden County year over year

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Chittenden County, VT: average hours without power per customer by year2015: 0.8h; 2016: 1.1h; 2017: 6.8h; 2018: 1.5h, coverage 100%; 2019: 1.2h, coverage 100%; 2020: 1.2h, coverage 100%; 2021: 1.6h, coverage 100%; 2022: 4.5h, coverage 100%; 2023: 1.0h; 2024: 6.9h; 2025: 0.9h024680%50%100%0.8h20151.1h20166.8h20171.5h20181.2h20191.2h20201.6h20214.5h20221.0h20236.9h20240.9h2025
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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 Vermont customers tracked each year.

Biggest outages in Chittenden County, 2022

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1December 23, 2022 07:30December 28, 2022 22:455d 15h18,073314K
2April 19, 2022 08:30April 21, 2022 20:302d 12h11,317102K
3July 5, 2022 19:15July 6, 2022 03:308h 15m7,24011K
4September 13, 2022 21:15September 14, 2022 11:4514h 30m3,6647,494
5December 17, 2022 03:45December 18, 2022 01:4522h3,53512K
6November 20, 2022 21:00November 21, 2022 07:3010h 30m1,9842,358
7December 21, 2022 04:00December 21, 2022 04:4545m1,9591,469
8February 18, 2022 00:30February 18, 2022 07:156h 45m1,9113,438
9December 23, 2022 04:00December 23, 2022 05:151h 15m1,7602,199
10November 9, 2022 11:45November 9, 2022 19:458h1,7182,448

Outage episodes by size in 2022: 78 reached 100+ customers, 17 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 Chittenden County reported on EIA Form 861 for 2022, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Vermont Electric Cooperative, Inc202215.2 hrs2.443.0 hrs1.95
Green Mountain Power Corp-----
City of Burlington Electric - (VT)-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 100% of Vermont's customers in 2022; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 113,089 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. Chittenden County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Chittenden County, VT annual power outage report, 2022, 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/2022/vermont/chittenden-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON