A solar panel is a device that converts sunlight into electricity. It is made up of many small units called solar cells, which are typically made from silicon. When sunlight hits these cells, it creates an electric current that can be used to power homes, businesses, and even vehicles. Solar panels are often installed on rooftops or in large fields, where they can capture the most sunlight. They are a key component of renewable energy systems, helping to reduce reliance on fossil fuels and lower greenhouse gas emissions. This technology is part of the broader movement towards sustainable energy solutions.