In Australia, a complete off-grid solar system for a typical home can cost roughly $25,000 to $60,000 or more, while larger systems in remote locations may exceed $100,000. The price depends on household energy use, panel and battery capacity, inverter type, backup generation, site access and installation complexity. Batteries and labour are often the biggest costs, and replacing batteries or a generator should be included in long-term budgeting. Ask a licensed solar installer for a site-specific design and quote, and compare the assumptions about energy use and backup capacity.