🇯🇵 Japan Solar Calculators
Solar system sizing, FIT income, battery subsidies, and payback calculators for Japanese homes and the Tokyo solar ordinance.
☀ Solar Calculator Japan
System size, panels, FIT income, and payback for Japanese homes.
☀ Solar Panel Calculator
Universal panel sizing from daily kWh and location.
🔋 Solar Battery Calculator
Size a home battery for evening self-consumption.
📈 Solar Payback Calculator
Detailed payback period and ROI calculation.
🏠 Self-Consumption Calculator
Optimize solar self-consumption vs grid export.
☀ Peak Sun Hours Calculator
Find peak sun hours for any location in Japan.