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- Amount of solar-derived electricity has increased steadily since the 1970s
- In 2004, solar cells produced 0.04 of world energy
- Most commonly used renewable resource
- An experimental solar aircraft, Helios, generates power from its photovoltaic wings
- Only very low portion of all sun's energy used
- Often used for transferring to electricity using photovoltaic tiles, heat engines
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Solar power is usable energy derived directly from the Sun. The energy is traditionally utilized for electricity using photovoltaic panels and heat engines.
Solar energy in all of its forms is the most commonly used source of renewable energy on Earth. Some companies have even proposed collecting the Sun's energy from space.
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A Sustainable Resource
All usable energy on the earth is ultimately solar: Combustible fuels, for instance, are produced through chains of events beginning with plant photosynthesis, while geothermal, wind, and tidal energies are consequences of solar-derived heat. However, the term solar power generally refers to the direct conversion of solar radiation into electricity.Backstory
The amount of usable solar energy that reaches the earth is vast, and is estimated to exceed current human consumption by a factor of roughly 6,000. While solar energy has been exploited in various ways throughout history (agriculture is one ancient method), technologies to convert this free energy to electricity were first developed in the 1950s, and have been widely available since the 1970s, when widespread interest in solar power briefly swept America and Europe.Current and Future Use
Large-scale development of solar technology has, however, been slow, and funding has largely remained at a low priority. This is in part due to the high cost of producing solar energy plants, and the relatively slow rate of return on the investment. On the other hand, the amount of resources spent, worldwide, on the diminishing prize of fossil fuels, coupled with the environmental consequences of hydrocarbon use, may soon make solar power seem more attractive by comparison.Basic Technology
Solar power is typically collected by heat-absorbing assemblies or solar cells, then converted to electricity. Other methods, such as concentrating solar heat via mirrors, are also widely in use.-
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Solar Power Questions
How fast is solar power growing in the US? At the current growth rate, what year will solar power provide 10% of US power? 1 AnswerSome graphs. http://sitemaker.umich.edu/section4group2/graphical_representation_of_solar_energy_use My guess would be never. Renewables are about 6% of our tot... read more
Does the manufacturing of solar panels do damage to the environment? 1 AnswerMost solar cells are made from silicon. The process of manufacturing it can produce waste which damages the environment. Some of the newer solar cells use toxic... read more
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RT @streamhopper: Homeowners show green power with #solar water heaters - http://tinyurl.com/yj8qwwm #kansas #lawrence
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* How Much Does Solar Power Cost?-Find Out How Much Does Solar Power Cost? http://tinyurl.com/ykcykg6
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You don't need sunshine for solar power - good job with this weekends weather! http://ow.ly/ECuO
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#Solar power day&night #SustainXEnergy got $4m VC for 4MWh compressed air container storage replacing battery http://tinyurl.com/yaw8pze
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Solar Energy News: India To Increase Solar Power Capacity http://bit.ly/4ZObmN
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