The Australian Energy Market Commission (AEMC) is spearheading a significant regulatory reform aimed at modernising distribution network planning, a move anticipated to substantially reduce the curtailment of rooftop solar energy. This initiative, detailed in a draft rule released this week, proposes replacing the current distribution annual planning report with a comprehensive five-yearly distribution network plan. This new plan will encompass a 20-year outlook, supplemented by concise annual updates from distribution network service providers.
Central to this reform is the establishment of a new framework for distribution network data reporting. The AEMC acknowledges that the proliferation of rooftop solar, battery storage systems, and electric vehicles is fundamentally reshaping distribution networks. While these technologies present opportunities for consumers, they also introduce complexities for grid management. Consequently, effective planning necessitates clearer, more accessible data on the deployment and usage patterns of these distributed energy resources.
Anna Collyer, Chair of the AEMC, highlighted that this reform will equip energy system decision-makers with enhanced information, enabling proactive interventions. “With detailed visibility of where solar, batteries and electric vehicles are emerging, distributed network service providers and investors can plan ahead through targeted upgrades or non-network solutions,” Collyer stated. “That means fewer constraints, less curtailment of rooftop solar, and ultimately more efficient investment decisions that flow onto everyone’s power bills.”
The draft rule also aims to improve visibility of the low-voltage network, which the commission believes will be instrumental in identifying optimal locations for electric vehicle chargers and community battery installations. The AEMC is currently soliciting stakeholder feedback, with submissions due by June 4, prior to a final determination and rule issuance later this year.
This proposed regulatory shift coincides with a notable acceleration in Australia’s rooftop solar deployment. Recent analysis indicates a 19% surge in the rooftop solar market last month, driven by consumer uptake of battery subsidies. The Clean Energy Council reported that Australia’s rooftop solar capacity reached 28.3 GW by the end of last year, with approximately 4.3 million installations nationwide. Rooftop solar’s contribution to Australia’s total electricity generation stood at 14.2% in the latter half of 2025, an increase from 13.4% in the corresponding period of 2024. This regulatory evolution follows the AEMC’s January decision to permit virtual power plants to compete directly with large-scale generators in Australia’s energy market from 2027.
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