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Electricity supply reliability budgets 2018

Evoenergy maintains a high standard of reliability in its electricity network. This information sets out the supply reliability budgets for the coming year.

These budgets are averages across all customers, and they give an indication of the likely number of interruptions to supply that an average customer might experience, together with the average duration of interruptions to supply.

Measures

Throughout the world the electricity distribution industry uses three commonly accepted measures for network reliability. These are:

CAIDI - customer average interruption duration index

This is the average duration (in minutes) that a customer is without power when affected by an interruption to supply.

SAIFI - system average interruption frequency index

This represents the average number of interruptions that a customer experiences each year

SAIDI - system average interruption duration index

This is the average duration (in minutes) that a customers are without power each year

Budgets

For 2018, Evoenergy aims to deliver to its customers a service that is at least as good as shown by the following reliability figures:

Measure Budget (limits) Units
Outage time (CAIDI) 74.6 Minutes
Outage frequency (SAIFI) 1.2 Number
Outage duration (SAIDI) 91.0 Minutes

 

In accordance with the Electricity Distribution (Supply Standards) Code, these budgets exclude interruptions of less than one minute and extended interruptions due to storms. Storms are those interruptions where 10% or more of customers in an area are affected.

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