On 18 May 2018, we released our final decision on TransGrid's transmission determination for the 2018–23 regulatory control period. We also published a fact sheet to accompany and summarise our final decision. 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.
Final decision
AER - TransGrid 2018–23 - TransGrid transmission determination - May 2018
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AER - TransGrid 2018–23 - Transmission determination - Attachment 1 - Maximum allowed revenue - May 2018
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AER - TransGrid 2018–23 - Transmission determination - Attachment 2 - Regulatory asset base - May 2018
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AER - TransGrid 2018–23 - Transmission determination - Attachment 5 - Regulatory depreciation - May 2018
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AER - TransGrid 2018–23 - Transmission determination - Attachment 6 - Capital expenditure
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AER - TransGrid 2018–23 - Transmission determination - Attachment 8 - Corporate income tax - May 2018
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AER - TransGrid 2018–23 - Transmission determination - Attachment 9 - EBSS - May 2018
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AER - TransGrid 2018–23 - Transmission determination - Attachment 10 - CESS - May 2018
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AER - TransGrid 2018–23 - Transmission determination - Attachment A - Negotiating Framework - April 2018
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AER - TransGrid 2018–23 - Transmission determination - Attachment B - Pricing Methodology - April 2018 SUPERSEDED
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AER - TransGrid 2018–23 - Transmission determination - Attachment B - Amended Pricing Methodology - January 2023
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Consultant reports
We commissioned reports that we took into account when making our final decision.
Deloitte Access Economics - Report for the AER - Labour price forecasts - 7 February 2018
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EMCa - Review of aspects of TransGrid's forecast capital expenditure - April 2018
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EMCa - Review of 132kV cable assumptions for Powering Sydney's Future project - April 2018
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Models
We must publish certain models with our final decision for TransGrid.
AER - Final decision TransGrid - Roll forward model - May 2018
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AER - Final decision TransGrid - Post-tax revenue model - May 2018
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AER - Final decision TransGrid - CESS model - May 2018
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AER - Final decision TransGrid transmission determination - EBSS model - May 2018
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AER - Final decision TransGrid transmission determination - Capex model - May 2018
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AER - Final decision TransGrid transmission determination - Opex model - May 2018
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Update
Pricing methodology
On 31 January 2023, the AER published its final decision on transmission pricing methodologies with amendments for system strength pricing (approved amended pricing methodology). The approved amended pricing methodology supersedes the pricing methodology approved in the AER’s 18 May 2018 final determination. All other aspects of the determination remain as per the AER’s 18 May 2018 final determination.