Photovoltaic power plants are facilities that convert sunlight directly into electricity using solar panels. These panels are made up of many small units called solar cells, which are typically made from materials like silicon. When sunlight hits these cells, it generates an electric current, providing a renewable source of energy. The electricity produced by photovoltaic power plants can be used to power homes, businesses, and even feed into the electric grid. These plants can vary in size, from small rooftop installations to large solar farms covering many acres, contributing to a cleaner and more sustainable energy future.