This study looks at how solar panels that are part of buildings can help make those buildings use very little energy called net-zero energy buildings. They found that to reach this goal, the shape and material of the building are important. Adding solar panels to walls and windows, not just the roof, is better. Combining solar panels with special solar heating systems and making them look nice is also helpful. However, some details need more attention like making sure the building is always comfortable and keeping an eye on energy use. More research is needed to make sure these solar panel systems last a long time and don't break easily. The main aim is to show how important and practical it is to use solar panels in buildings to lower energy use.