The Small-scale Technology Certificate (STC) rebate helps reduce the upfront cost of your solar system. When you install solar panels, you can generate STCs based on the expected energy your system will produce. These certificates can then be sold or assigned to your installer, lowering your overall installation costs. Eligibility for the rebate can depend on various factors, including system size and location, so it's a good idea to check the details with your installer or visit the official government website at energy.gov.au for more information.