Australian households and small businesses in New South Wales, South East Queensland, South Australia, and Victoria are on the cusp of potential electricity bill reductions from 1 July 2026, as national and state regulators prepare to release their final Default Market Offer (DMO) and Victorian Default Offer (VDO) determinations. These decisions, expected by late May 2026, follow draft proposals earlier in the year that indicated significant price decreases, primarily driven by a softening in wholesale electricity costs and a surge in battery storage capacity.
The Australian Energy Regulator (AER) released its draft DMO 2026-27 in March, proposing reductions for customers on standing offer contracts across NSW, South East Queensland, and South Australia. Similarly, Victoria’s Essential Services Commission (ESC) published its draft VDO, foreshadowing lower bills for its default offer customers. These draft decisions offer a glimpse into the anticipated relief for consumers after several years of rising energy costs.
Driving Factors Behind the Expected Price Drops
The primary catalyst for the forecast price reductions is a notable easing in wholesale electricity costs. The Australian Energy Market Operator (AEMO)‘s Quarterly Energy Dynamics Q1 2026 report, published on 16 April 2026, revealed that the National Electricity Market (NEM) average wholesale spot prices were AUD $73 per megawatt hour (MWh) in Q1 2026. This represents a 12% decrease from Q1 2025, although it was up 47% compared to Q4 2025.
“Grid-scale batteries are increasingly absorbing excess renewable energy during the day and shifting it into the market during evening peaks, helping moderate prices during high-demand periods.” - Violette Mouchaileh, AEMO Executive General Manager
AEMO’s analysis highlights the significant role of increased battery capacity in moderating these prices. Batteries were the most frequent price-setting technology in the NEM during Q1 2026, influencing 32% of dispatch intervals. This growing fleet of battery storage systems is actively soaking up abundant solar energy during the day and discharging it during evening peaks, thereby reducing reliance on more expensive gas and hydro generation. Gas generation, in particular, hit its lowest average for any quarter since 1999 during Q1 2026.
Beyond wholesale costs, both regulators cited lower retail operating costs and reduced environmental scheme costs as contributing factors to the proposed DMO and VDO decreases. This multi-faceted reduction in the electricity supply chain’s cost components is translating into tangible benefits for consumers.
What the Draft Decisions Mean for Your Bill
New South Wales, South East Queensland, and South Australia (AER DMO)
Under the AER’s draft determination, residential customers in these regions could see annual price reductions ranging from 1.3% to 10.1%. Small businesses are slated for even larger decreases, between 7.6% and 21.2%.
Specific examples of potential savings for typical customers on flat tariffs include:
| Region | Customer Type | Proposed Decrease | Annual Saving (Approx.) |
|---|---|---|---|
| South East QLD | Residential | 10.1% | AUD $216 |
| NSW (Essential Energy) | Residential | 8.2% | AUD $226 |
| NSW (Ausgrid) | Residential | 4.6% | AUD $90 |
| NSW (Endeavour Energy) | Residential | 2.7% | AUD $64 |
| South Australia | Residential | 1.3% | AUD $31 |
| NSW (Essential Energy) | Small Business | 21.2% | AUD $1,320 |
| South East QLD | Small Business | 12.8% | AUD $550 |
| South Australia | Small Business | 15.2% | AUD $845 |
Note: These figures are based on the AER’s draft determination for 2026-27 and typical consumption levels. Actual savings may vary.
Victoria (ESC VDO)
For Victorian customers, the ESC’s draft VDO projects an average annual bill decrease of approximately 3% (around AUD $46) for households and 5% (around AUD $172) for small businesses on flat tariff offers. The ESC’s final decision is expected by 24 May 2026.
Regional Queensland (QCA Regulated Prices)
Separate to the AER’s DMO, the Queensland Competition Authority (QCA) also released its draft determination for regulated retail electricity prices in regional Queensland on 27 March 2026. This draft forecasts a 9.7% (AUD $212) decrease for typical residential customers on flat-rate tariff 11, and an 11.3% (AUD $296) decrease for small business customers on flat-rate tariff 20. The QCA’s final determination is expected in late May or early June.
The New Solar Sharer Offer
A significant new element introduced in the AER’s draft DMO is the Solar Sharer Offer. This opt-in electricity plan is designed to help households maximise savings from solar energy by including three hours of free usage during the middle of the day. This initiative aims to encourage load shifting and leverage the abundance of daytime solar generation, potentially lowering overall system costs. Retailers with over 1,000 customers will be required to offer this plan as an opt-in option.
For those looking to maximise their energy savings, understanding new tariff structures and exploring options like the Solar Sharer Offer will be crucial. Resources like How to Access Australia’s 3 Hours of Free Power with a Smart Meter in 2026: Your Guide to Maximising Savings can provide further guidance.
Important Considerations Ahead of the Final Decisions
While the draft determinations indicate a positive outlook for consumers, the AER has cautioned that global energy market developments continue to be monitored closely. Increases in the price of forward wholesale electricity contracts for 2026-27, observed since the conflict in the Middle East began, could still influence the final determinations. However, even at these elevated levels, current forward contracts remain below those seen during the 2022 energy market events.
The DMO and VDO serve as a safety net for customers on standing offers and act as a reference price for comparing market offers. Historically, less than 10% of households and around 18% of small businesses remain on these default offers, as more competitive market offers are often available. Consumers are strongly encouraged to shop around and compare plans as the final determinations are released.
As winter approaches, understanding how these price changes will impact your energy bills and exploring energy-efficient upgrades remains vital. For further strategies on managing costs, consider reviewing guides such as How to Cut Your Electricity Bill This Winter in Australia 2026: Strategies After Federal Rebates End and Australia’s Top Energy-Efficient Home Upgrades 2026: Maximise ROI as Electricity Bills Soar This Winter.
The final DMO and VDO decisions in May will provide definitive clarity on electricity prices for the upcoming financial year, offering a significant update for Australian energy consumers.