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  2. Solar energy - Wikipedia

    en.wikipedia.org/wiki/Solar_energy

    Solar power, also known as solar electricity, is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV) or indirectly using concentrated solar power. Solar panels use the photovoltaic effect to convert light into an electric current . [ 63 ]

  3. Portal:Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Portal:Renewable_energy

    Variable renewable energy sources are those that have a fluctuating nature, such as wind power and solar power. In contrast, controllable renewable energy sources include dammed hydroelectricity, bioenergy, or geothermal power. Renewable energy systems have rapidly become more efficient and cheaper over the past 30 years.

  4. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Development of solar engines continued until the outbreak of World War I. The importance of solar energy was recognized in a 1911 Scientific American article: "in the far distant future, natural fuels having been exhausted [solar power] will remain as the only means of existence of the human race". [283] The theory of peak oil was published in ...

  5. Renewable energy industry - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy_industry

    Almost all of the increase was due to greater investment in wind power, solar PV, and biofuels. [7]: 27 In 2000, venture capital (VC) investment in renewable energy was about 1% of total VC investment. In 2007 that figure was closer to 10%, with solar power alone making up about 3% of the entire Venture Capital asset class of ~$33B.

  6. Renewable energy in the United States - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy_in_the...

    Therefore, quantitative evaluation of distributed solar to the country's electric power sector has been lacking. Recently, the Energy Information Administration has begun estimating that contribution. [49] [2] Before 2008, most solar-generated electric energy was from thermal systems, however by 2011 photovoltaics had overtaken thermal.

  7. Sources of electrical energy - Wikipedia

    en.wikipedia.org/wiki/Sources_of_electrical_energy

    Light: Energy produced by light being absorbed by photoelectric cells, or solar power. Chemical: Energy produced by chemical reaction in a voltaic cell, such as an electric battery. Pressure: Energy produced by compressing or decompressing specific crystals. Magnetism: Energy produced in a conductor that cuts or is cut by magnetic lines of ...

  8. Renewables to Lead World Energy Usage by 2050: 3 Stocks to Buy

    www.aol.com/news/renewables-lead-world-energy...

    Factors like lower cost of electricity generation from renewables, tax credits, preferential feed-in tariffs and increased adoption of renewable portfolio standards boost the adoption of clean energy.

  9. Renewable thermal energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_thermal_energy

    The heated water can then be used in homes. The advantage of solar thermal is that the heated water can be stored until it is needed, eliminating the need for a separate energy storage system. [2] Solar thermal power can also be converted to electricity by using the steam generated from the heated water to drive a turbine connected to a ...

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