Photovoltaics is a technology that converts sunlight directly into electricity using special materials called solar cells. These cells are often made from silicon and work by absorbing sunlight, which then excites electrons and creates an electric current. This process allows us to harness the sun's energy, making it a clean and renewable source of power. Many homes and businesses are now installing solar panels, which are made up of multiple solar cells, on their rooftops. By using photovoltaics, we can reduce our reliance on fossil fuels and lower our carbon footprint, contributing to a more sustainable future for our planet and helping combat climate change.