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Third Taxing District

2 Second Street
Norwalk, CT 06855

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e-Reliability Report

Third Taxing District e-Reliability Statistics

IEEE (Institute of Electrical & Electronics Engineers)

1366 Standards


SAIDI – System Average Interruption Duration Index

Definition: average interruption duration (in minutes) for customers served by the system. Lower number is better.
Average for NE Region73.41143.3492.41
Average for Similar Size Utilities106.8695.46113.03

CAIDI – Customer Average Interruption Duration Index

Definition: Average duration (in minutes) of an interruption experienced by customers. Lower number is better.
Average for NE Region125.39146.95119.7
Average for Similar Size Utilities120.25117.55191.75

ASAI – Average Service Availability IndexIndex

Definition: Measure of the availability of the distribution system that serves customers. Higher number is better.
Average for NE Region99.9860%99.9798%99.9826%
Average for Similar Size Utilities99.9796%99.9820%99.9784%
Source: Statistics from American Public Power Association Annual Benchmarking Report

Outage Report

(7/1/2021 to 6/30/2022)

DateCause of Outage# of Customers AffectedDuration (minutes)Subtation
7/9/2021Storm12335Rowan Street
9/1/2021Storm6230Rowan Street
1/7/2022Manufacturing Defect240Rowan Street
1/29/2022Vehicle Accident1590Rowan Street
3/24/2022Scheduled145Rowan Street
6/16/2022Equipment Damage12445Rowan Street

Equipment Damage: 17%

Scheduled: 17%

Vehicle Accident: 17%

Storm: 33%

Manufacturing Defect: 17%