Active solar is a type of renewable energy that uses devices to capture energy from the Sun and transfer it into energy that can be used in homes and businesses. These devices, called solar collectors, absorb sunlight, which then warms up and turns into heat energy. This heat energy can then be used to heat and cool our homes, power our appliances, and provide us with hot water. Having active solar energy can save you money on electricity and help protect the environment by not burning fossil fuels.