Australia’s energy landscape is shifting fast. A new pricing structure, often called the “sun tax,” is being introduced across parts of the grid. It is officially known as export charges or two-way pricing. Many households with solar panels are now asking how this will affect their returns.
In this guide, everything will be explained clearly. You will learn what it is, when it starts, and how it impacts your solar energy investment.
What Is the “Sun Tax” All About?
The “sun tax” refers to charges applied when excess solar energy is exported to the grid. Traditionally, households were paid feed-in tariffs for exporting power. However, grid congestion has increased during peak solar generation times.
As a result, networks are now introducing two-way pricing. This means you may be charged for exporting solar energy during certain periods. At the same time, you may still be rewarded during high-demand periods.
Therefore, the system is not purely a tax. Instead, it is a pricing mechanism designed to balance supply and demand.
When Does It Start?
The rollout has already begun in some regions. However, full implementation will occur progressively through 2025 and 2026.
Most electricity distributors are introducing these changes in stages. Early adoption has been seen in parts of New South Wales and South Australia. Other states are following closely.
So, while not everyone is affected yet, preparation is essential.
Will You Make Less Money From Your Solar Battery Unit?
This is one of the biggest concerns. The answer depends on how your system is used.
If excess solar energy is exported during peak generation times, charges may apply. As a result, feed-in revenue could decrease slightly.
However, battery storage changes the equation significantly. Stored solar energy can be used later when prices are higher. This reduces exposure to export charges.
Therefore, households with batteries are generally better protected.
Is It Still Worth Installing a Solar Battery?
Yes, and arguably more than ever.
With two-way pricing in place, self-consumption becomes more valuable. A solar battery allows more solar energy to be used within the home. Less reliance on exporting means fewer charges.
Additionally, peak electricity prices remain high. Stored energy can offset expensive grid usage in the evening.
So, while export payments may decline, overall savings can still increase.
State-by-State Breakdown: Are All States Charging This?
Not all states are applying export charges at the same pace. However, the direction is consistent nationwide.
- South Australia: Early adopter due to high solar penetration
- New South Wales: Leading implementation through major distributors
- Victoria: Preparing frameworks, with gradual rollout expected
- Queensland: Monitoring and trial phases underway
- Western Australia: Different market structure, slower adoption
Therefore, while timelines differ, the shift toward two-way pricing is widespread.
How Much Will This Actually Cost You?
The cost impact is expected to be modest for most households.
Typical export charges range from 1 to 3 cents per kWh during peak export periods. However, free export thresholds often apply.
For example:
- The first portion of exported solar energy may remain free
- Charges only apply above certain limits
- Higher payments may be offered during peak demand
As a result, many households may see minimal financial impact if usage is optimised.
Strategies to “Beat the Tax” in 2026
Several strategies can be used to minimise costs and maximise returns.
1. Increase Self-Consumption
More solar energy should be used during the day. Appliances like dishwashers and washing machines can be timed accordingly.
2. Install a Battery
Stored solar energy reduces exports. This directly lowers exposure to charges.
3. Smart Energy Management
Energy management systems can optimise when solar energy is used or stored.
4. Export at the Right Time
Some tariffs reward exports during peak demand. Timing exports can improve returns.
5. Upgrade System Design
Future systems should be designed with two-way pricing in mind. This ensures better long-term performance.
2025–26 Solar Export Charge Status by State
| State | Status | Notes |
|---|---|---|
| South Australia | Active | Early rollout with flexible export limits |
| New South Wales | Active/Expanding | Major distributors implementing |
| Victoria | Pending | Framework under development |
| Queensland | Trial Phase | Limited trials in select areas |
| Western Australia | Limited | Different grid structure |
Start Dates by State and Distributor
| State | Distributor Example | Start Date |
|---|---|---|
| South Australia | SA Power Networks | 2023–2025 rollout |
| New South Wales | Ausgrid, Endeavour | 2024–2026 rollout |
| Victoria | Multiple networks | Expected 2025–26 |
| Queensland | Energex, Ergon | Trials ongoing |
| Western Australia | Western Power | Not confirmed |
Final Thoughts
The “sun tax” may sound concerning at first. However, it represents a shift toward a smarter energy grid.
While some export revenue may decrease, opportunities still exist. Solar energy remains one of the best investments for Australian households. When combined with battery storage, even greater value can be unlocked.
Therefore, instead of avoiding solar, systems should be optimised for the new environment. With the right approach, solar energy can continue to deliver strong financial and environmental benefits well into the future.