In the deep transition, the transmission buildout is accelerating to connect renewable energy to load centres and manage demand spikes across the network.

Download the 2026 Transmission Annual Planning Report.

Explore by key theme

 

Overview
Consumer value
Network development
Connections & innovation
Forecast assumptions
System security

To meet the additional growth in demand forecast and to enable renewable generation and storage projects, NSW will require a greatly expanded transmission backbone capable of connecting more than 26 GW of additional utility-scale wind and solar capacity to increasingly widespread demand centres. Learn more >

Proposed major developments

The major transmission developments, aligned with AEMO’s 2026 Integrated System Plan and the NSW Electricity Infrastructure Roadmap.

See the proposed developments

Forecast of constraint

Transgrid forecasts potential constraints on the network over the next 10-years.

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Regulated Revenue Proposal

Every five years, we submit a Revenue Proposal to the AER. Read about the 2028-33 Revenue Proposal and how consumers are helping to shape it.

Read about it now

Subsystem developments

This section outlines our proposed capital works for subsystems to meet the network performance requirements of NER Schedule 5.1.

Find out about proposed capital works for subsystems

Replacement projects

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Network Capability Incentive Parameter

Find out about the action plan

Asset retirements and deratings

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Regulatory Investment Test for Transmission (RIT-T)

Learn about the RIT-T schedule

Changes from the Transmission Annual Planning Report 2025

See what's changed.


Get data to make informed investment decisions

Get clear, detailed information with the Transgrid Connection Opportunities Portal - your interactive data visualisation and mapping tool that provides rich data on transmission infrastructure and systems conditions.

Visit the portal