History of Solar Powered Light
The sun's energy has been used by humans to achieve a better quality of life since as early as 700 BC. Beginning in the 1960s, solar power was harnessed as a means of producing artificial light, and solar powered light sources continue to evolve today. Does this Spark an idea?
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1960s
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In the mid 1960s, Japanese scientists installed the largest photovoltaic array (a collection of solar cells that convert solar energy into electricity) to power the Ogami Island Lighthouse, according to Renewable Energy World.com.
1970s
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During the 1970s, the Exxon Corporation sponsored the development of a more affordable solar cell, costing only $20 per watt instead of $100 per watt. Lower costs led to the widespread use of solar powered light in the form of offshore navigation lights, lighthouses and railroad crossings, according to the U.S. Department of Energy.
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Solar One
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In 1973, one of the first solar powered residences, dubbed Solar One, was built. Solar cells on the roof provided electricity from the sun during the day and stored energy for use during the night, according to the U.S. Department of Energy. Solar One illustrated that solar energy was a viable source for home lighting, heating and utility in general.
1982
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In 1982, the first mega-watt scale power station began operating in California, according to the U.S. Department of Energy. The power station converted solar energy to electricity to provide light and utility to multiple buildings.
2010
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As of 2010, solar panels are used somewhat commonly to charge batteries and power lamps. A Hong Kong-based manufacturer recently introduced a solar light bulb, hoping to bring a convenient source of light to developing parts of the world, reports The New York Times. The bulb is powered by small strips of solar panels, and when charged can provide light for hours.
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References
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- Photo Credit Solar energy image by lefebvre_jonathan from Fotolia.com
