Understanding the New Proposed DMO Changes for 2026–27

The Australian Energy Regulator (AER) has released its issues paper for the 2026–27 Default Market Offer (DMO 8), opening consultation on several potential updates to how electricity prices are calculated. These proposals aim to better align regulated pricing with the realities of today’s evolving energy market — including solar growth, shifting usage patterns, and rising retailer costs.

For businesses and strata schemes, understanding these changes early can help you better prepare for future cost impacts and review whether your current pricing arrangements remain competitive.

Key Areas the AER Is Reviewing

1. Tariff Structure Adjustments 

The AER is exploring whether the DMO should incorporate a blended approach to network costs — combining elements of flat-rate and time-of-use (TOU) tariffs. 
This would: 

• More accurately reflect real customer consumption behaviour 

• Align pricing with when energy is used, not just how much is used 

• Create clearer price signals as more households and businesses shift to solar and flexible usage 

2. Updates to Wholesale Cost Methodologies 

Renewable generation — especially rooftop solar — continues to change the shape of wholesale electricity demand. 

The AER is reviewing how to: 

• Treat solar exports in wholesale cost modelling 

• Accurately reflect controlled load usage 

• Capture the true cost impacts of daytime solar generation surpluses and evening peaks 

These updates aim to ensure the DMO better mirrors real-world market conditions. 

3. Retail Cost Data Improvements 

Retailers have raised concerns about how bad and doubtful debt is collected in current methodology. 
The AER is considering: 

• Using actual retailer-reported debt levels, rather than averaged estimates 

• Improving consistency in how retail cost data is gathered and applied 

This would help ensure the DMO reflects genuine operating costs for retailers.

What This Means for Businesses and Strata Schemes

While these updates are still under consultation, they signal changes that may affect future energy bills — especially for customers relying on DMO-based pricing. 

If Your Business or Property Is Billed on DMO Rates (Including Gate Meter Arrangements): 

Now is an ideal time to review your setup. These changes could influence: 

• How competitive your current DMO-based charges are 

• Whether shifting to a retail contract could reduce costs 

• How future tariff structures may affect peak usage or controlled loads 

Being proactive can prevent cost surprises down the track.

How Leading Edge Energy Can Help

We work closely with businesses and strata schemes to make sense of regulatory changes and ensure your energy costs remain optimised. 

We can help you: 

• Review whether your current DMO-based pricing is still competitive 

• Explore retail contract options tailored to your usage profile 

• Prepare for upcoming tariff methodology changes once finalised 

• Understand how wholesale and network shifts may impact future bills 

With the energy market evolving rapidly, a quick review now can ensure you’re not paying more than you need to.

Book Your Free Energy Health Check Today

Get clarity on how proposed DMO changes could affect your energy pricing — and discover whether a different tariff or retail contract can reduce your costs.