Solar power is energy from the sun that is converted into electricity. This can be done in three ways, using photovoltaics (PV), solar heating and cooling, and concentrating solar power. Photovoltaic cells convert light into solar power by an electronic process, and can be used to power homes and businesses. Concentrated solar power systems use solar tracking systems as well as lenses and mirrors to harness sunlight into one beam. Solar heating and cooling and concentrated solar power use the sun’s power to provide heating, or to power electricity-generating turbines.
The International Energy Agency has estimated that by 2050, solar would be the world’s largest source of electricity, with solar photovoltaics and concentrated solar power contributing about 16 and 11 percent respectively.