How it works
Plan a photovoltaic system and explore its yield in seconds
This simulation is for orientation only and does not replace professional advice.
Location
Roof
Roof type
Roof position & azimuth
PV system
Advanced settings
Inverter, cables, soiling, temperature mismatch — typically 12–16%.
A flat-rate reduction for partial shade.
Annual yield
—
kWh / year
Specific yield
—
kWh / kWp / year
≈ households powered
—
× 4-person household
Winter
— kWh
— · Nov – Feb
Shoulder
— kWh
— · Mar – May, Sep – Oct
Summer
— kWh
— · Jun – Aug
% of optimal
—%
vs. South-facing, 30°
Monthly distribution
kWh per month
Hourly shape · sample day
How it works
From sun position to kWh
For each of 8,760 hours of a typical meteorological year, we transpose horizontal irradiance onto your tilted roof using sun position, decompose direct and diffuse light, then derate for module temperature and your declared system losses.