Where Does Solar Energy Come From Wikipedia

Solar power is the conversion of energy from sunlight into electricity either directly using photovoltaics pv indirectly using concentrated solar power or a combination concentrated solar power systems use lenses or mirrors and solar tracking systems to focus a large area of sunlight into a small beam.

Where does solar energy come from wikipedia.

California leads the nation in electricity generation from non hydroelectric renewable energy sources including geothermal power wind power and solar power california has some of the most aggressive renewable energy goals in the united states. Renewable resources are replenished either by. The term solar vehicle usually implies that solar energy is used to power all or part of a vehicle s propulsion. A renewable energy resource is one that is being or can be replenished as it is used.

A solar vehicle is an electric vehicle powered completely or significantly by direct solar energy. Solar energy is radiant light and heat from the sun that is harnessed using a range of ever evolving technologies such as solar heating photovoltaics solar thermal energy solar architecture molten salt power plants and artificial photosynthesis. Photovoltaic cells convert light into an electric current using the photovoltaic effect. Solar power the production of electricity from solar energy is performed either directly through photovoltaics or indirectly using concentrated solar power csp.

The spectrum of the sun s solar radiation is close to that of a black body with a temperature of about 5 800 k. The sun emits em radiation across most of the electromagnetic spectrum although the sun produces gamma rays as a result of the nuclear fusion process internal absorption and thermalization convert these super high energy photons to lower energy photons before they reach the sun s. Many solar cookers currently in use are relatively inexpensive low tech devices although some are as powerful or as expensive as traditional stoves and advanced large scale solar cookers can cook for hundreds of people. Solar energy is the transformation of heat the energy that comes from the sun it has been used for thousands of years in many different ways by people all over the world.

Human action eg trees cut down for bio fuel are replaced by. A solar cooker is a device which uses the energy of direct sunlight to heat cook or pasteurize drink and other food materials. One advantage that csp has is the ability to add thermal storage and provide power up to 24 hours a day. Gemasolar in spain was the first to provide 24 hour power.

It is an essential source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending. There is considerable academic and commercial interest.