BalconyWatt: Solar Yield
Estimate balcony solar output and payback with a compass and shade wizard
About this app
Will a balcony solar kit actually pay off on your balcony?
BalconyWatt answers that with your real orientation, tilt and shading — not a generic average.
SETUP
• Number and wattage of modules, inverter limit
• Panel direction measured with your phone's compass while you stand on the balcony
• Tilt measured by resting your phone against the panel
• Location from a city list or GPS
• Shading factor with a visual explanation
RESULTS
• Estimated production per month across the year and a typical daily profile per season
• Realistic self-consumption based on your household pattern
• Investment cost, electricity price, annual saving and payback time in your currency
BALCONY COMPASS WIZARD & SHADE SKETCH
A three-step wizard measures your balcony with the device sensors instead of guessing. Shade Sketch lets you mark surrounding buildings and trees with their angular height, then reduces the estimate realistically per season — the honesty other calculators skip.
Estimates only, based on average irradiation data. Not electrical or financial advice. Always follow local registration and safety rules.