On 11 October 2024, the Australian Energy Regulator (AER) released its issues paper on Default Market Offer (DMO) prices for the 2025–26 period. The DMO is a critical regulatory mechanism designed to protect consumers from excessively high electricity prices while ensuring that retailers can recover their costs. This article provides an overview of the key points from the issues paper, focusing on the proposed updates to the DMO pricing methodology and the implications for energy retailers.
Background
The DMO was introduced in response to concerns raised by the Australian Competition and Consumer Commission (ACCC) about the retail electricity market. The DMO serves as a price cap for standing offer customers, ensuring that they are not charged unjustifiably high prices. The AER is responsible for setting the DMO price annually for residential and small business customers in New South Wales, South East Queensland, and South Australia.
Key Issues for Consultation
The AER’s issues paper outlines several key areas where stakeholder feedback is sought. These include:
- Wholesale Cost Forecasting: The AER is considering refinements to its methodology for forecasting wholesale electricity costs. This includes the use of updated load profile data, the impact of solar photovoltaic (PV) exports on hedging costs, and alternative forecasting methods for South Australia.
- Retail Cost Calculation: The AER proposes to expand its dataset for calculating retail costs by including data from a broader range of retailers. This will provide a more comprehensive view of the costs associated with serving residential and small business customers.
- Retail Margin and Competition Allowance: The AER is seeking feedback on whether to apply a competition allowance in the DMO price for 2025–26. The competition allowance is intended to reflect the costs of acquiring and retaining customers in a competitive market.
- Network Sector Developments: The AER is monitoring changes in network costs, including the impact of new jurisdictional schemes such as the NSW Electricity Infrastructure Roadmap. These costs will be factored into the DMO price for 2025–26.
- Embedded Networks: The AER is considering how the DMO could be extended to customers in embedded networks, pending changes to the relevant regulations.
Drivers of Market Change
The issues paper highlights several factors driving changes in the electricity market, which will influence the DMO price for 2025–26:
- Wholesale Market Conditions: Wholesale electricity prices have been volatile due to factors such as generator outages, fuel supply issues, and high international coal and gas prices. While prices have eased somewhat, they remain elevated compared to historical averages.
- Retail Market Competition: Retailers continue to offer market contracts below the DMO price to attract and retain customers. The AER’s analysis shows that customers can achieve significant savings by switching from the DMO to the cheapest market offers.
- Network Costs: Network costs, which include distribution and transmission charges, are a significant component of the DMO price. The AER’s recent determinations have reflected the need for networks to integrate consumer energy resources, implement cyber security measures, and maintain reliability.
Proposed Methodology Updates
The AER is proposing several updates to its methodology for setting the DMO price:
- Wholesale Cost Forecasting: The AER is considering using a blended load profile that incorporates interval meter data and excludes rooftop solar exports. This approach aims to provide a more accurate reflection of the costs retailers face in procuring electricity.
- Retail Cost Calculation: The AER plans to collect retail cost data from a broader range of retailers, including smaller retailers with more than 1,000 customers. This will provide a more representative view of the costs associated with serving residential and small business customers.
- Retail Margin and Competition Allowance: The AER is proposing to maintain the retail margin at 6% for residential customers and 11% for small business customers. However, the AER is seeking feedback on whether to apply a competition allowance, which was excluded in the previous DMO determination due to economic conditions and cost-of-living pressures.
- Network Costs: The AER is considering whether to base network costs on a blend of flat rate and time-of-use tariffs. This would better reflect the costs incurred by retailers in serving customers on different tariff structures.
Next Steps
The AER has invited stakeholders to provide feedback on the issues paper by 8 November 2024. The feedback will be considered in the development of the draft and final DMO determinations for 2025–26.
Conclusion
The AER’s issues paper for the 2025–26 DMO price outlines several important updates and refinements to the pricing methodology. These changes aim to ensure that the DMO continues to protect consumers from high electricity prices while allowing retailers to recover their costs. Energy retailers and other stakeholders are encouraged to provide feedback on the proposed changes to help shape the final determination.
References
- Australian Energy Regulator (AER), Default Market Offer Prices 2025–26 Issues Paper, October 2024.
- Australian Competition and Consumer Commission (ACCC), Retail Electricity Pricing Inquiry Final Report, June 2018.



