Inverter Sizing Estimate Calculator Interactive Solar Load Calculator Interactive Solar Load Calculator Easily estimate your home’s energy needs. 1. Add Your Appliances Appliance Name Power (Watts) Hours Used/Day Add Appliance 2. Your Solar System Estimate Total Daily Energy Need 0.00 kWh This is the total energy your panels should generate daily. Recommended System Size (with 25% headroom) 0.00 kWh Your ideal daily generation target. System Sizing Recommendations Peak Load (Running Watts): 0 W Highest simultaneous power draw. Recommended Inverter Size: ~0.0 kW Handles peak load + surge. Recommended Battery Bank: ~0.0 kWh For ~8 hours of overnight power.