Overview

Final decision

On 5 June 2020, we released our final decision on SA Power Networks electricity distribution determination for the 2020–25 regulatory control period. Our final decision is set out in the Overview and accompanying attachments. As a number of issues were settled at the draft decision stage or required only minor updates, we have not prepared all attachments. In these circumstances our draft decision reasons form part of this final decision.

On 25 March 2024 we published our determination to revoke and substitute our final decision on SA Power Network’s electricity distribution determination for the 2020–25 regulatory control period. A material error was identified that impacted our operating and capital expenditure, revenue, Demand Management Innovation Allowance Mechanism and Service Target Performance Incentive Scheme incentive rate final decisions. The revocation and substitution determination can be found here.

Final decision - SA Power Networks distribution determination 2020-25 - Overview - June 2020

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AER
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Fact sheet - SA Power Networks revenue decision 2020-25 - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 1 - Annual revenue requirement - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 2 - Regulatory asset base - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 3 - Rate of return - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 4 - Regulatory depreciation - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 5 - Capital expenditure - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 6 - Operating expenditure - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 7 - Corporate income tax - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 8 - Efficiency benefit sharing scheme - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 9 - Capital expenditure sharing scheme - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 10 - Service target performance incentive scheme - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 12 - Classification of services - June 2020

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AER
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Final Decision - SA Power Networks distribution determination 2020-25 - Attachment 13 - Control mechanisms - November 2021 - Clean

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AER
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Final Decision - SA Power Networks distribution determination 2020-25 - Attachment 13 - Control mechanisms - November 2021 - Marked up

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 14 - Pass through events - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 15 - Alternative control services - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 17 - Connection policy - June 2020

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AER
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Final decision - SA Power Networks distribution determination 2020-25 - Attachment 18 - Tariff structure statement - June 2020

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AER
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Final Decision - SA Power Networks distribution determination 2020-25 - Attachment A - Negotiating framework - June 2020

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AER
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Final Decision - SA Power Networks distribution determination 2020-25 - Amended Tariff Structure Statement - June 2020 - Erratum August 2020 - Clean

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AER
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Final Decision - SA Power Networks distribution determination 2020-25 - Amended Tariff Structure Statement - June 2020 - Erratum August 2020 - Marked Up

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AER
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Consultant reports

Reports commissioned by the AER in preparing our final decision for SA Power Networks

Deloitte Access Economics - Labour Price Growth Forecasts prepared for the AER - 20 March 2020

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Deloitte Access Economics (DAE)
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Taylor Fry, Advice to the AER on bushfire insurance - SA Power Networks distribution determination 2020-25 - March 2020

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AER
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Models

AER final decision models for SA Power Networks

AER - Final Decision - SAPN distribution determination 2020-25 - Capex Model - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - CESS model - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - Depreciation tracking module - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - Metering PTRM - Public - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - Opex model - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - Metering RFM - Public - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - PTRM - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - Repex Model - Junel 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - RFM - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - EBSS - June 2020

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AER
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AER - Final Decision - SAPN Distribution Determination 2020-25 - Ancillary Network Services Pricing Model - Public - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - PL Pricing Model - Public - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - PL PTRM - Public - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - PL RFM - Public - June 2020

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AER
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AER - Final Decision - SAPN distribution determination 2020-25 - PL Under-recovery calculation - Public - June 2020

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AER
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Update – Control mechanisms

On 26 November 2021, the AER revoked and substituted the 2020–25 determination for SA Power Networks to correct an error in the control mechanisms attachment to facilitate an appropriate transition from the previous version of the service target performance incentive scheme (STPIS 1.2) to its latest version (STPIS 2.0).

All other aspects of the determination remain as per the AER’s final determination which was originally made on 5 June 2020.

AER - Letter to SA Power Networks - Revocation and substitution of 2020-25 determination - November 2021

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Update – Revocation and substitution determination for cable and conductor minor repairs material error

On 25 March 2024, the AER published its revocation and substitution determination for the for the 2020–25 regulatory control period. This corrected a material error relating to cable and conductor minor repairs that impacted our operating and capital expenditure decisions. This had flow on impacts to revenues, and the Demand Management Innovation Allowance Mechanism allowance and Service Target Performance Incentive Scheme incentive rates. 

All other aspects of the AER’s final determination remain as were made on 5 June 2020.

Our revocation and substitution determination, associated letter to SA Power Networks on this matter and the revised PTRM are below. The revised PTRM includes revenues approved in our Emergency standard cost pass through decision and annual updates for return on debt up to and including 2023–24 which can be found here.

AER - Revocation and substitution of SA Power Networks' 2020-25 distribution determination

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AER
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AER - Revocation and substitution of SA Power Networks' 2020-25 distribution determination - Letter

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AER
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AER - SAPN PTRM - 2023-24 RoD updates incl Emergency standards CPT + Revocations for Cables and Conductor cost

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AER
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