TIS 131 450New South Wales is in deep transition. As we progress from around 40 per cent renewable energy today to around 90 per cent by 2035, Transgrid is delivering the system needed to underpin a modern economy with reliable, affordable and cleaner energy. By the time we reach 2035 in the new transitioned era, NSW’s energy system will look fundamentally different. With more than 80 per cent of NSW’s coal-fired generation retired and new industries emerging, our responsibility is to ensure the grid continues to deliver value, reliability and security to households, businesses and communities.
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Key insights from this year's report
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Delivering value for consumers during the deep transition
We are navigating the deep transition through coordinated, one system planning - focusing on investments that deliver near-term savings and long-term value for consumers by reducing transition risk and avoiding higher future costs.
Transmission network developments
In the deep transition, the transmission buildout is accelerating to connect renewable energy to load centres and manage demand spikes across the network.
Network innovation and connections
The Transmission Annual Planning Report 2026 showcases Transgrid’s use of innovative non-network and emerging technology solutions to address constraints in the NSW transmission network – looking beyond ‘poles and wires’ – and how we support renewable generators and other customers connecting to the grid.
Forecast assumptions
What’s happening inside our transitioning energy system during the deep transition.
See the key inputs and assumptions underpinning our analysis >
System security
Throughout the deep transition, Transgrid is responsible for ensuring sufficient system security services are available to keep the NSW power system operating within its safe and secure technical envelope.
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.
