A solar inverter converts the panels’ direct current into household-ready alternating current, so its capacity should suit your panel array and home’s electrical setup. Compare string, microinverter and hybrid options, considering shade, monitoring features, battery compatibility, efficiency, warranty terms and likely replacement costs. In Australia, the inverter must meet applicable electrical and grid-connection requirements, including relevant AS/NZS standards. Ask a licensed solar installer to confirm the design, approvals and compatibility with your retailer and any battery you may add later.