How This Rebate Calculator Works
Answer a few questions about your location, property type, and whether you are installing solar, a battery, or both. The calculator checks your eligibility for the federal STC rebate, state-specific battery rebates, and the Cheaper Home Batteries Program, then shows your total rebate value in dollars.
Rebate amounts vary by state, system size, and installation timing. This tool uses current STC prices, deeming periods, and published state rebate values to give you an accurate estimate before you request quotes.
Common Questions
What solar rebates are available in Australia in 2026?
The main federal rebate is the Small-scale Technology Certificate (STC) scheme, which discounts your solar system cost by $2,500 to $4,500 depending on system size, location, and deeming period. Some states also offer battery rebates: Victoria has the Solar Homes Program, and the federal Cheaper Home Batteries Program provides up to $3,250 for eligible battery installations.
How are STCs calculated?
STCs are based on your system size, postcode zone (which determines solar output), and the deeming period (years remaining until 2031 when the scheme ends). The formula is: system size in kW x zone rating x years remaining. Each STC is worth roughly $38 to $40 at current market prices, and your installer typically handles the paperwork.
Is the solar rebate ending?
The STC rebate reduces by one-fifteenth each year until it reaches zero on 1 January 2031. In 2026, the deeming period is 5 years, meaning you receive fewer certificates than in previous years. Installing sooner locks in a higher rebate value.