In October 2025, Energy Policy WA published an exposure draft of the Electricity System and Market Rules. The proposed rules would:
Designate Western Power as the distribution system operator (DSO) for networks that it operates.
Establish a framework for third-party aggregators to engage non-contestable electricity customers through Synergy as the parent aggregator.
Simplify and clarify technical requirements for new solar and battery systems to support customers and installers to install more and bigger systems.
For more information on each of the proposed changes, refer to the consultation paper and exposure draft at the link below.
Public consultation process on the exposure draft was open from 24 October 2025 to 20 November 2025. Energy Policy WA received 14 written submissions, which have been provided below.
We have published two fact sheets about the proposed changes for individual consumers and solar installers/retailers. These fact sheets include more information about what we propose to change to encourage ongoing uptake of rooftop solar and batteries and why changes are necessary. If you would like to provide more general feedback about the proposals, or if you have any questions, please email smartersolar@deed.wa.gov.au
DER Rules Forum Webinar – Presentation Available
Energy Policy WA recently held a DER Rules forum to outline the proposed changes and provide an opportunity for interested parties to ask questions.
You can now view the presentation from the webinar (PDF).
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