1.7 ERMUSR 04-14-2020UTILITIES COMMISSION MEETING
TO: FROM:
ERMU Commission Mike Tietz Technical Services Superintendent
MEETING DATE: AGENDA ITEM NUMBER:
April 14, 2020 1.7
SUBJECT:
American Public Power Association Certificate of Excellence in Reliability
ACTION REQUESTED:
Receive the APPA Certificate of Excellence in Reliability
BACKGROUND \\ DISCUSSION:
The American Public Power Association (APPA) recently honored ERMU and 140 other public
power utilities with their Certificate of Excellence in Reliability. This recognition is given to
utilities that have significantly outperformed the electric industry nationwide averages as
gathered by the Energy Information Administration. APPA collects utility data from nearly 502
public power utilities nationwide that track their reliability data via the eReliability Tracker. Of
those, 310 were considered to have sound data that was included in the 2019 Annual
Benchmarking Report.
The tracker performs calculations for System Average Interruption Duration Index (SAIDI) which
measures the average outage time per customer on the system, System Average Interruption
Frequency Index (SAIFI) which measures how often a customer on our system could expect to
experience an outage, and Customer Average Interruption Duration Index (CAIDI) which
measures the averaged outage duration of all customers that actually experienced an outage.
The report also includes calculations for Momentary Average Interruption Frequency Index
(MAIFI) and Average Service Availability Index (ASAI), which helps utilities compare, collect,
categorize, and analyze their outage information.
According to the numbers for 201925.41 minutes (excluding major
events), compared to the industry average of 143 minutes (excluding major events). In simple
terms, it means that averaged out over our 12,473 electric customers in 2019, each customer
could expect to have a total outage time that is 118 minutes shorter than the national average.
ATTACHMENT:
APPA Certificate of Excellence in Reliability
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