in Sri Lanka
Check out this great technology for rural areas of developing nations.
This Foundation is helping NGOs install lighting based on Light Emitting Diodes.
Technical advances have greatly improved the quality and reliability of LEDs since they were invented in the 1960s, making them much brighter and more efficient. The late 1990s brought high-brightness LEDs that could shine continuously for 100,000 hours, or 30 to 40 years in normal service. The first LEDs emitted light only at pure wavelengths or colours – blues, greens, yellows, oranges or reds – they were unsuitable for domestic lighting. The high-brightness white LED that emitts at all visible wavelengths to produce white light is a relatively new development......
The LUTW Luxeon lights can be utilized in a number of different applications and the most appropriate solution is dependent on the overall needs, budget and type of installation.The energy sources for LUTW's home lighting projects have included Person Powered Pedal Generators, Pico Hydro and Pico Wind Turbines and Solar Photovoltaic.
The Christian Science Monitor has published an article describing a project in India using LEDs with solar photovoltaic power.
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