A study looked at how different design choices affect energy use and indoor lighting in office buildings with large glass walls. They found that the size of the windows, the type of glass used, and the shading devices all play a big role in how much energy is used and how well the indoor lighting works. The study showed that certain design parameters, like the window-to-wall ratio and the type of glass, have a big impact on how well the building performs. By choosing the right design features, buildings can be more energy-efficient and have better indoor lighting.