Solar panels convert sunlight into electricity, while an inverter changes it into the type your home uses; extra energy may be sent to the grid or stored in a battery. For beginners, the right system depends on your electricity use, roof space, shading, orientation and budget. Compare quotes from appropriately accredited installers and ask about panel warranties, inverter replacement costs, monitoring and after-sales support. You may be eligible for federal small-scale technology certificates, but their value and any feed-in tariff depend on current rules, your system and retailer, so check energy.gov.au and your electricity provider.