Size a hybrid solar system with battery and grid backup.
A hybrid system sizes the array on annual energy and the battery on the evening load it must time-shift. That typically lifts self-sufficiency from around 35 per cent to 70 or more. Batteries rarely reach full self-sufficiency because winter generation is far below consumption, which is why the grid connection is retained.
Hybrid Solar System
Array sized on annual consumption; battery sized on the evening load it must shift
Array sized on annual consumption; battery sized on the evening load it must shift A hybrid system sizes the array on annual energy and the battery on the evening load it must time-shift. That typically lifts self-sufficiency from around 35 per cent to 70 or more.
Batteries rarely reach full self-sufficiency because winter generation is far below consumption, which is why the grid connection is retained.
This calculator takes 6 inputs: Annual consumption, Average peak sun hours, Evening and night consumption, Battery depth of discharge, System losses, Import price per kWh. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.