A solar panel is the best system in 1kW capacity. Because of the
the off-grid system works with batteries and 1kW off-grid solar system comes with 2 batteries of 150AH. So, 2 batteries of 150AH are more than sufficient to store the balancing electricity For installing a 1-kilowatt solar system, 6 sq. Mt. Shadow-free space is required. It may be either your rooftop or any plain surface.