Solar power is a crucial part of creating super energy-efficient buildings called Net Zero Energy Buildings (NZEBs). These buildings generate most of the electricity they need from renewable sources like solar energy. Combining energy-saving techniques with solar power is vital for achieving net zero energy status. A study looked at different regions and building types to see how much energy they use and how much solar energy they can harvest. The results showed that using less energy and relying on solar power are key for sustainable, green buildings in many environments. The study suggests that government policies should encourage both energy conservation and renewable energy to make these buildings more common.