What Your Solar System Does When It Makes More Power Than You Need
Every Australian solar home generates electricity at a different rate throughout the day. In the middle of a clear summer morning, your 6.6kW system might be producing 5 kilowatts while your home is using just 1.
That surplus 4 kilowatts flows out through your smart meter and into the local electricity network and your energy retailer credits your account for it. This credit rate is your solar feed-in tariff, and understanding how it works is essential to maximising your solar returns and choosing the right energy plan.
How Feed-In Tariffs Have Changed Over the Years
Feed-in tariffs in Australia have changed enormously since the early days of rooftop solar. The original state government-guaranteed premium rates from 2010 to 2012 were extraordinarily generous as high as 60 cents per kilowatt-hour in New South Wales and 66 cents in South Australia.
These rates reflected the government’s desire to kickstart solar adoption, not the actual market value of electricity. Those premium schemes have long since closed, and rates today reflect actual wholesale electricity market dynamics rather than policy subsidies.
At Invincible Energy Australia’s trusted solar support partner we help every customer understand exactly how their feed-in tariff interacts with their consumption pattern and how to maximise the value of every kilowatt-hour their system generates.
Current Feed-In Tariff Rates Across Australia
In 2025, standard single-rate solar feed-in tariffs from most Australian energy retailers range between 5 cents and 10 cents per kilowatt-hour. Some retailers offer higher rates as a competitive differentiator or through virtual power plant programs, while others have reduced rates to reflect periods of midday solar oversupply in the grid. Rates vary by state, retailer, and time of day depending on the tariff structure.
Victoria Minimum Rate Guaranteed
Victoria’s Essential Services Commission sets a minimum feed-in tariff floor rate that all retailers must pay. In 2025 this sits at around 3.3 cents per kilowatt-hour during off-peak periods, with higher rates for peak export times. Victorian solar owners have additional protection compared with other states because the minimum rate prevents retailers from dropping to zero, which has occurred in some other markets during periods of grid oversupply.
Queensland, New South Wales and South Australia
In these states, feed-in tariff rates are determined by individual retailer competition with no government mandated floor. Standard rates in 2025 range from 5 to 8 cents per kilowatt-hour, though some competitive retailers and VPP programs offer 10 to 15 cents. Shopping your energy plan every 12 to 24 months is particularly important in these states to ensure you are receiving the most competitive rate available.
Invincible Energy reviews energy plan options with every customer as part of a free consultation, comparing available feed-in tariffs and overall bill impact to identify the best retailer deal for their specific situation.
Time Varying Feed-In Tariffs and Why They Matter
An increasingly important structure in the Australian market is the time-varying or time-of-export feed-in tariff. These tariffs pay different rates depending on when your system exports, reflecting the actual value of solar generation at different times of day.
Why Midday Solar Is Worth Less Than Evening Solar
At midday, hundreds of thousands of Australian solar systems are simultaneously exporting to the grid, creating a period of oversupply that pushes wholesale electricity prices and therefore export values down. In the early evening, solar generation ceases while household demand peaks, creating high-value periods for grid electricity.
Time-varying feed-in tariffs reflect this by paying lower rates for midday exports and higher rates for generation during morning and evening peak periods. If your system includes battery storage that can delay export to peak value windows, a time-varying tariff can significantly improve your overall solar returns.
How to Get the Most From Your Feed-In Tariff
Understanding feed-in tariffs is only half the equation. The other half is knowing how to structure your energy use and system configuration to maximise the value you extract from every kilowatt-hour your solar system generates.
For a free review of your current energy plan and solar generation data, contact the team at Invincible Energy.
Maximise Self-Consumption First
Since the gap between retail electricity prices (30 to 45 cents) and feed-in tariffs (5 to 10 cents) is so large, using your solar electricity directly is always far more valuable than exporting it. Shifting high-consumption activities dishwashers, washing machines, pool pumps, EV charging into solar generation hours maximises self-consumption before any excess is exported. This principle is the foundation of good solar economics in Australia’s current market.
Choose the Right Energy Retailer
Feed-in tariff rates vary enormously between retailers, but the headline rate is only one part of the comparison. Look at the overall electricity tariff structure, daily supply charges, availability of time-of-use pricing, and whether the retailer offers a virtual power plant program.
Tools like the federal government’s Energy Made Easy comparison website and Victoria’s Energy Compare portal allow side-by-side comparison of all available offers in your area. Review your energy plan annually the market changes, and a better deal is often available from a competitor.
Consider Battery Storage for Export Optimisation
A battery system paired with a time-varying feed-in tariff can allow you to store midday surplus and export it during the higher-value evening peak window, improving the average rate you receive for your exported energy. Several virtual power plant programs offered by retailers and aggregators pay premium rates for battery exports during grid demand peaks, creating an additional revenue stream beyond standard self-consumption savings.
The solar specialists at Invincible Energy Australia’s trusted solar support partner can help you evaluate whether battery storage makes financial sense for your specific generation and usage profile.
Getting the Best Solar Energy Plan for Your Situation
The right combination of feed-in tariff, electricity tariff structure, and self-consumption strategy varies by household. Invincible Energy offers free consultations that review your current energy plan, generation data, and usage patterns contact the team that reviews your current energy plan, solar generation data, and usage patterns to identify exactly how much more you could be saving from your existing or planned solar system.
