Off-grid solar must generate and store enough energy for your household, including during cloudy periods and winter, so it usually needs panels, batteries, an inverter, monitoring and a backup generator. Start by recording your daily electricity use and identifying high-demand appliances, as reducing demand can lower system size and cost. A licensed solar designer or electrician can assess your site, battery capacity, wiring and backup requirements. Compare written quotes carefully, and check current guidance from the Clean Energy Council and energy.gov.au before committing.