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Solar Energy
Solar energy refers to energy that is collected from sunlight. Solar energy can be applied in many ways, including to generate electricity, to generate hydrogen, to heat or cool air. to heat buildings, water or food stuff.
Solar technologies and techniques
Solar energy technologies refer primarily to the use of solar radiation for practical ends. All other renewable energies other than geothermal derive their energy from energy received from the sun. Solar technologies are broadly characterized as either passive or active depending on the way they capture, convert and distribute sunlight. Active solar techniques use photovoltaic panels, pumps, and fans to convert sunlight into useful outputs. Passive solar techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air, and referencing the position of a building to the Sun. Active solar technologies increase the supply of energy and are considered supply side technologies, while passive solar technologies reduce the need for alternate resources and are generally considered demand side technologies.
Solar generation of electricity
Sunlight can be converted into electricity using photovoltaics (PV), concentrating solar power (CSP), and various experimental technologies. PV has mainly been used to power small and medium-sized applications.
Photovoltaics (PV) is the field of technology related to the application of solar cells or photovoltaic cells for energy by converting sunlight directly into electricity using the photoelectric effect.
