solarsystem/cloudjet

Using less water b) Reducing air pollution c) Help to slow climate change d) Reducing your household’s carbon footprint e) Reducing our reliance on fossil fuels A 1 kw rooftop system generally requires 12 sq. metres (130 square feet) of flat, shadow-free area (preferably south-facing). Actual sizing, however, depends also on local factors of solar radiation and weather conditions a s and shape of the roof. .