Off-grid solar uses panels, batteries and usually an inverter to supply electricity without relying on the grid, so the system must be sized for your daily use and periods of cloudy weather. Start by reducing energy demand and listing essential appliances, as heating, hot water and pumps can significantly increase the required system size. Many homes also keep a backup generator for extended low-sun periods, while batteries need suitable installation, ventilation and safety equipment. A licensed solar installer can assess your site, explain local requirements and recommend equipment; check current rebates and guidance through energy.gov.au, as eligibility and support can change.