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| Worldwide, grid-based electric lighting consumes 19% of total global electricity production.<ref name="iea2006">http://www.iea.org/Textbase/npsum/Light2006SUM.pdf</ref> The energy used to provide the world's light is 1 900 Mt of CO2 per year.<ref name="iea2006"/> In Africa 60% the energy for lighting and other needs is derived from wood, leading to deforestation.<ref>http://www.uneca.org/mdgs/goal7.asp</ref> Combustion-based lighting is also a major cause of respiratory illness,<ref>http://blumcenter.berkeley.edu/led-lighting-replacement-project</ref> and generally of poor quality for reading, contributing to illiteracy.<ref>http://www.dhan.org/electricity/</ref> All in all, plenty of reason to seek ways of providing more sustainable lighting everywhere. Certainly electric lighting will be a key part (in addition to [[Natural lighting]]).
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| * [[CFL]]s or [[compact fluorescent lights]]{{wp sup|compact fluorescent lights}} are a popular choice for [[energy-efficient]] lighting, and have the advantage that they can be used in regular light fittings.
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| * [[Fluorescent lights]]{{wp sup|Fluorescent lights}} with [[Electrical ballast#Electronic 'ballasts']]{{wp sup|Electrical ballast#Electronic 'ballasts'}} are slightly more efficient than older fluorescent lights and give a more pleasant light.Most CFLs now come with an electronic ballast <ref>http://www.electronics-project-design.com/ElectronicBallastDesign.html</ref>
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| * [[LED]] lighting is becoming increasingly attractive. It is used in remote regions such as Nepal, by the [http://lutw.org Light Up the World Foundation] as a healthier replacement for [[kerosene lighting]]. These lights are far sturdier than other types of lighting, especially compared to fluorescent lights.
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| * [[LVD]] or [[Electromagnetic induction bulbs]] or the [[Electrodeless lamp]]{{wp sup|Electrodeless lamp}} These relatively new lamps offer dimmable, longer life and half the Watts per lumens than CFLs. <ref>http://lvdbulbs.com/lvd_faqs.htm </ref> More information is needed on their performance {{fact}}
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| ==Suggested projects==
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| * Compare light quality of different lights. What is the flicker rate of CFL? Are there better quality ones, comparable to the high quality but expensive tri-phoshpor fluorescent lights with electronic ballasts?{{sp}}
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| * Start a section on tri-phosphor lighting in the relevant Wikipedia and/or Appropedia article.){{sp}}
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| * Compare the life expectancy of different types of lights - find peer-reviewed studies, if possible. What factors affect life expectancy?{{sp}} (CFLs sometime don't last as long as expected in my experience, though I've been told by an efficient lighting expert that Phillips and Osram are more reliable than other brands. --[[User:Chriswaterguy|Chriswaterguy]] · <small>[[User talk:Chriswaterguy|talk]]</small> 19:19, 1 May 2007 (PDT))
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| <references/>
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| == Interwiki links ==
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| * [[Wikipedia:Electric lighting]]
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| [[Category:Electricity]] | | [[Category:Electricity]] |
| | [[Category:Electric appliances]] |
| [[Category:Lighting]] | | [[Category:Lighting]] |
