Are you considering going off-grid with solar power in Australia? A 20kW off-grid solar system can provide energy independence, and understanding the cost is crucial. While prices can vary, a 20kW off-grid solar system typically falls within the range of $40,000 to $60,000.
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Home uses single-phase; workshop uses three-phase.
Figures are indicative guides for discussion — final design depends on appliances, shading, and site audit.
While the initial investment may seem significant, consider it a long-term investment in energy independence. Off-grid systems reduce reliance on the grid, providing a reliable source of clean energy that can lead to savings over time. They also offer energy resilience, valuable in remote areas or during power outages.
Before deciding, consult reputable solar installers for customized quotes based on your location and energy needs. They can recommend suitable brands and components for your off-grid solar solution.
Our Installs & Projects
Ten minutes from Ballarat, this 20kW system powers an all-electric home and a Tesla — entirely off the grid. Three Deye inverters and a 45kWh battery bank handle everything the household throws at them, including daily EV charging through Victoria challenging winters.
Our Kits & Products
A 20kW off-grid solar system suits families of five or more with minimal power restrictions. Both Deye/Pylontech and Sigenergy options offer expandable batteries and solar arrays up to 27-36kW, with integrated EV charging capabilities and independent operation for uninterrupted power supply.
Power use in a weekender is rarely predictable. A property might sit empty for weeks, then need to run everything the moment someone arrives. The system needs to handle both without wasting money on unnecessary capacity.
Three-bedroom homes often grow into their power requirements. Children get older, appliances multiply, and what feels sufficient today can quickly become restrictive. That’s why we design beyond immediate needs.
