Solar energy uses the sun’s light and heat to generate renewable or ‘green’ power. The most common form of solar energy is harnessed by solar panels, or photovoltaic cells. In photovoltaic power stations, they’re arranged almost edge-to-edge to capture sunlight in large fields. You’ll also see them on top of houses and other buildings at times, as well. The cells are created from semiconductor materials. When the sun’s rays hit the cells, it loosens electrons from their atoms. This allows the electrons to flow through the cell and generate electricity.