Compare the battery’s usable capacity, power output, warranty, estimated lifespan and compatibility with your existing solar system. On the Gold Coast, ask an installer about coastal humidity, ventilation, placement and whether you want backup power during outages. Get quotes from appropriately licensed installers and check how a battery may affect your electricity tariff, export settings and home insurance. Rebates and finance offers can change, so confirm current eligibility through energy.gov.au, the Queensland Government and your chosen provider.