Size and evaluate a grid-connected solar system without storage.
Grid-tied systems need no autonomy sizing because the grid absorbs surplus and covers deficits. The financial return depends heavily on self-consumption, since exported energy earns far less. Sizing beyond about 100 per cent annual offset pushes more generation into low-value export, which is why bigger is not always better economically.
Grid Tie Solar
Benefit = self-consumed kWh × import price + exported kWh × export rate
Benefit = self-consumed kWh × import price + exported kWh × export rate Grid-tied systems need no autonomy sizing because the grid absorbs surplus and covers deficits. The financial return depends heavily on self-consumption, since exported energy earns far less.
Sizing beyond about 100 per cent annual offset pushes more generation into low-value export, which is why bigger is not always better economically.
This calculator takes 6 inputs: Annual consumption, Average peak sun hours, System losses, Import price per kWh, Export payment per kWh, Self-consumption rate. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.