Transmission system plan & network opportunity map

The energy sector is rapidly changing with the growth of renewables and new technology. We’re committed to transforming the grid to ensure a decarbonised future, where much of the generation is supplied by renewable energy.

As part of this, Western Power is keen to work with businesses who have or are developing innovative energy solutions that supports our grid evolution.

By using emerging technologies, we’re working towards connecting more renewables while making sure we continue to deliver safe, efficient, and reliable power to the Western Australian community.

On an annual basis, we produce the Transmission System Plan (TSP) and Network Opportunity Map (NOM) which summarises our proposed network development plans and identifies potential opportunities for network and non-network solutions. Examples of non-network solutions include demand management battery storage options or an alternative option.

To support the Network Opportunity Map (NOM), we've introduced an interactive view of selected distribution network opportunities.

The iNOM provides a map-based view of capacity and emerging opportunities at zone substations and feeders across the SWIS, making it easier to identify where Network Support Services may be required.

It is intended to complement the NOM by providing a more accessible, location-based view of distribution opportunities, and should be used alongside the NOM Report for full context.

The data presented in the iNOM is updated daily (8:30am AWST), with spatial data available for download.

Launch the iNOM

The TSP outlines the challenges and opportunities on the South West Interconnected System (SWIS) transmission system in the coming decade. It also  provides  a summary of Western Power’s proposed network development plans to address power system security and reliability  while maximising the long-term interest of customers. The TSP takes into consideration supporting documents for future transmission plans.

The TSP is produced as per the Electricity System Market (ESM) Rules.

We're inviting feedback from consumers and industry on the Draft Transmission System Plan 2025. Submissions can be sent through our feedback form before 24 April 2026. These submissions will be taken into consideration before the release of the final plan. 

The NOM provides a snapshot of the South West Interconnected System’s performance, and our challenges and objectives for the next five to 10 years. It offers insight into how we plan, develop and maintain the grid as well as the forecasting methods we use to inform this going forward. The primary purpose of the NOM is to provide opportunities available to businesses to become involved in providing non-network solutions to the grid, such as demand management, battery storage options or an alternative option.

The NOM is produced annually and published, together with the TSP in accordance with the Electricity Network Access Code Chapter 6A – Alternative Options.

The NOM is extensive, and in tandem with the TSP, it sets out an annually revised snapshot of the opportunities for small and large businesses in WA to provide solutions to issues in the changing energy sector. The NOM covers both transmission and distribution, while the TSP focuses on transmission.

Please note: Appendix C and D will be published with the final Transmission System Plan report.  

Businesses can register their interest by completing the form below. Alternatively, you can contact us to tell us about your solutions and ideas.

Register your interest below to be notified about future opportunities.