AER - Final determination - Default market offer prices 2025–26 - Cost assessment model

On 26 May 2025 we released the model for calculating DMO prices for 2025–26.

As set out in the DMO 2025–26 final determination, our approach is to use a cost build-up approach to calculate DMO prices, taking into account forecast costs for wholesale electricity, network, environment and retail costs. The model calculates the expected changes in these costs for 2025–26 for each area and customer type.

The information contained in the model is set out in the DMO 2025–26 final determination. We have published the model to provide stakeholders with additional transparency on how we calculated the DMO prices for 2025–26.