Building-integrated photovoltaics (BIPV) are special solar panels that can be built into the roof or walls of a building. They turn energy from the sun into electricity and can be used to power different parts of the building like lights, air conditioners, and computers. Building-integrated photovoltaics can save people money on their electricity bills, because the electricity is free from the sun. They also help the environment by producing clean energy, instead of energy that releases pollution into the air.