With the large window and skylights installed in the house, it’s definitely a great way to harvest solar energy. However, there’s a problem. You will also get the sun light in summer which can heat up the house like an oven. So the energy you saved during winters times are spent in the summer to cool off. However, it doesn’t have to be that way.
All it takes is to block the sunlight in the summer. You can do so by using overhang and shutters. Interior and exterior window shutters can help reduce heat gain in your home. Window shutters also offer weather protection and add more security to your house.
Source: EERE