Explanatory statement - Updating instruments for regulated stand-alone power systems - May 2022

To provide guidance to interested parties we have provided an explanatory statement that:

• explains what stand-alone power systems (SAPS) are and the advantages they have over a connected network
• describes the SAPS rule changes coming into effect 1 August 2022, including how the changes integrate the principles of value for money and consumer protections
• outlines the amendments we propose to make to six guidelines, and the reasons why.

Most of our proposed amendments are mechanical in that we are updating definitions to reflect the rule changes. In the Distribution Reliability Measures Guideline we propose to add a new “SAPS feeder” classification to SAIDI and SAIFI to reflect the unique characteristics of SAPS. We give reasons for this in our explanatory statement.

To provide guidance to interested parties we have provided an explanatory statement that:

• explains what stand-alone power systems (SAPS) are and the advantages they have over a connected network
• describes the SAPS rule changes coming into effect 1 August 2022, including how the changes integrate the principles of value for money and consumer protections
• outlines the amendments we propose to make to six guidelines, and the reasons why.

Most of our proposed amendments are mechanical in that we are updating definitions to reflect the rule changes. In the Distribution Reliability Measures Guideline we propose to add a new “SAPS feeder” classification to SAIDI and SAIFI to reflect the unique characteristics of SAPS. We give reasons for this in our explanatory statement.