Photovoltaic systems are technology that converts 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 creates an electric current that can be used to power homes, businesses, or even stored in batteries for later use. These systems are a key part of renewable energy solutions, helping to reduce reliance on fossil fuels and lower greenhouse gas emissions. By harnessing the power of the sun, photovoltaic systems contribute to a cleaner environment and promote sustainable energy practices for the future.