For most Gold Coast households, the main upfront solar discount is provided through federal Small-scale Technology Certificates (STCs), with the value depending on your system, installation date, location and certificate market value. An approved solar installer usually claims the STCs and includes the discount in your quote, but eligibility should be confirmed before signing. Battery incentives may also be available under current federal or Queensland programs, subject to their rules and funding. Check energy.gov.au and Queensland Government information, and ask your installer for a clear breakdown of rebates, discounts and out-of-pocket costs.