Solar collectors are devices that collect and absorb energy from the sun in the form of heat or electricity. They can also be referred to as solar panels, solar cells, or photovoltaic cells. Depending on their shape and design, they may also be called solar energy systems, solar modules, or solar arrays. Some collectors are designed to be installed on rooftops and are therefore called rooftop solar panels, while others are built into the construction of buildings and are referred to as building-integrated photovoltaics. Solar collectors are a sustainable and renewable source of energy that can help reduce our reliance on fossil fuels and combat climate change.