For off-grid systems, inverter size should match your peak load and system voltage. As a general rule: use a 12V system for inverters up to 1,000W, a 24V system for 1,000–2,000W, and a 48V system for 2,000–4,000W. If your load exceeds these ranges, consider using multiple. . Sizing PV array, battery bank, inverter and charge controller for a standalone system. This tool provides sizing estimates. Use vendor specs and local site data to finalise design. Start by selecting a common appliance or entering custom values. • Refrigerator: 400W • Lights: 200W • Computer/TV: 300W • Water pump: 750W • Miscellaneous:. . Start by creating a comprehensive list of all appliances and devices you'll use in your off-grid home. For example, a 60-watt light bulb used for 5. .
