A solar collector is a device that captures sunlight and converts it into heat. It is commonly used in solar heating systems to warm water or air for residential and commercial applications. The most common types of solar collectors are flat-plate collectors and evacuated tube collectors, each designed to maximize energy absorption. These collectors are often part of larger systems that include storage tanks and pumps, allowing the collected heat to be used when needed. By harnessing energy from the sun, solar collectors contribute to reducing reliance on fossil fuels and lowering energy costs, making them an essential component of renewable energy solutions.