The Small-scale Technology Certificate (STC) scheme in Australia can lower the upfront cost of eligible solar installations. Eligibility and STC creation depend on system type and compliance. Here’s what off-grid and solar buyers should know for 2025–2026.
What Are STCs?
STCs are created when eligible small-scale renewable systems (including certain solar PV systems) are installed. They can be sold or assigned at installation to reduce the system price. The number of STCs depends on system size, location (zone), and the remaining years of the scheme. Always confirm current rules with the Clean Energy Regulator or a registered installer.
Grid-Connected Solar
Most grid-connected solar PV systems that meet the scheme rules are eligible for STCs. The installer typically assigns STCs and applies the discount to your quote. Off-grid-only systems may have different or limited eligibility—check the latest Clean Energy Regulator guidance and product eligibility lists.
Batteries and Off-Grid
Standalone batteries or off-grid-only systems often have no or limited STC eligibility. STCs are primarily for solar PV (and some other small-scale technologies) under the current scheme. If your project is off-grid or battery-only, confirm with an installer or the regulator whether any STCs apply.
What You Should Do
- Confirm eligibility for your exact system (grid, hybrid, off-grid, with or without battery) on the Clean Energy Regulator website or with a registered provider.
- Use a registered installer if STCs are part of your plan; DIY or unregistered installs may not create STCs.
- Plan system size and cost using tools like WattSizing for sizing; treat STCs as a possible discount only after you’ve confirmed they apply to your case.
Rules and zone values can change; always use current official information for 2025–2026.
