Navigate the financial incentives that make solar more affordable for Australian households and businesses
Small-scale Technology Certificates (STCs)
Federal incentive reducing upfront cost by $2,000-$4,000 for typical residential systems
WA State Battery Rebate
Up to $3,900 for battery storage systems ($1,300 per 10kWh of capacity)
Federal Battery Rebate
Up to $18,000 for eligible battery installations (income tested)
STCs are a federal government incentive designed to encourage the installation of small-scale renewable energy systems. When you install a solar system, you create STCs based on the amount of renewable energy your system is expected to generate over its lifetime (deemed to be 15 years for solar panels).
The number of STCs you receive depends on three key factors:
6.6kW system in Perth (Zone 3):
• System size: 6.6kW × 1.382 (Zone 3 rating) = 9.12 kW adjusted
• Deeming period: 15 years (2025 installation)
• STCs created: 9.12 × 15 = 137 STCs (rounded down)
• STC value: 137 × $38 = $5,206 discount
This $5,206 is typically deducted from your upfront cost by the installer
The WA Government provides a rebate of $1,300 per 10kWh of battery capacity, up to a maximum of $3,900 (30kWh).
Eligibility:
The Australian Government provides up to $18,000 for eligible battery installations through the Household Battery Program.
Eligibility (Income Tested):
The deeming period reduces by one year annually until the scheme ends in 2030. Installing sooner means more STCs and a larger discount. A system installed in 2025 receives 15 years of STCs, while the same system in 2029 would only receive 11 years.
Most installers offer an "upfront discount" by purchasing your STCs at the point of sale. This means you assign your STCs to the installer in exchange for an immediate price reduction. The alternative is to create and sell the STCs yourself, which takes more time and effort.
In Western Australia, you can potentially combine multiple incentives:
Total potential savings: Over $25,000 for eligible households!
Use our quote builder to see exactly how much you can save with STCs and rebates
