solar energy

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solar energy

Q: What is solar energy?

Solar energy is the radiation from the Sun capable of producing heat, causing chemical reactions, or generating electricity. The total amount of solar energy received on Earth is vastly more than the world's current and anticipated energy requirements. If suitably harnessed, solar energy has the potential to satisfy all future energy needs.

Q: What are the common uses of solar energy?

Solar energy is commonly used for solar water heaters and house heating. The heat from solar ponds enables the production of chemicals, food, textiles, warm greenhouses, swimming pools, and livestock buildings. Cooking and providing a power source for electronic devices can also be achieved by using solar energy.

Q: How is solar energy collected?

The most common devices used to collect solar energy and convert it to thermal energy are flat-plate collectors. Another method of thermal energy conversion is found in solar ponds, which are bodies of salt water designed to collect and store solar energy. Solar radiation may also be converted directly into electricity by solar cells, or photovoltaic cells, or harnessed to cook food in specially designed solar ovens, which typically concentrate sunlight from over a wide area to a central point.

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Written by S. Ashok

Fact-checked by The Editors of Encyclopaedia Britannica

Last Updated: Dec 14, 2024 • Article History

Key People:: Paul Beattie MacCready; Mária Telkes

Related Topics:: smart grid; solar power; space-based solar power; solar constant; wind energy

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What is solar energy?

What are the common uses of solar energy?

How is solar energy collected?

News •

Largest Solar Energy Project in U.S. Reaches Major Milestone • Dec. 11, 2024, 10:46 PM ET (Newsweek)

solar energy, radiation from the Sun capable of producing heat, causing chemical reactions, or generating electricity. The total amount of solar energy incident on Earth is vastly in excess of the world’s current and anticipated energy requirements. If suitably harnessed, this highly diffused source has the potential to satisfy all future energy needs. In the 21st century solar energy has become increasingly attractive as a renewable energy source because of its inexhaustible supply and its nonpolluting character, in stark contrast to the finite fossil fuels coal, petroleum, and natural gas. See also solar power. Meet the renewables The Sun is ...(100 of 1217 words)

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