The paper discusses how buildings can switch to using zero energy by combining smart design strategies. By making buildings super energy-efficient and airtight with passive techniques and using technologies that save energy, we can move closer to net zero energy buildings. These buildings aim to produce as much energy as they use, mainly from renewable sources like solar power. The key idea is to cut down on the energy we need from traditional sources. To make this happen, buildings must be well-designed to save energy, leaving just a small amount that can be covered by renewable energy. Essentially, by using both active technologies and careful building design, we can make buildings super energy-efficient and move toward a future of net zero energy use.