A shadow free area on the rooftop. (Even a small shadow could affect generation output on the entire string of panels.)

Approx 100-120 sqft is required for installing a 1kWp system.

Ideally, the wiring b/w solar panel on the roof and inverter placed indoor shouldn’t be more than 20m to avoid DC losses.

Inverter and metres should be placed at a conveniently accessible location indoors away from sun/rain.

Batteries need to be placed indoors, separately.