IÂ have highlighted before the innovative solar tubes (closet lighting ideas) which brings in natural lighting through the roof during the day. A cheaper and simpler option, a 1.5 liter solar bottle light, is being used in rural and poor areas around the world.
For a lot of people around the world, just turning on one light bulb can be a major expense. Their homes are not well designed, so it can be a dark place even during the day. Now they can have an inexpensive lighting solution during the day (costing $1 to install in the Philippines). A 1.5 liter soda bottle is filled with water and a little bit of chlorine or bleach. A hole is then cut into the roof where these bottles can sit.
The water reflects the sun light in all directions (it is equivalent to a 50-60 watt light bulb), whereas just a hole in the roof works as a spotlight and doesnâ€™t light up the whole area. The Chlorine or bleach prevents algae or bacteria growing in the water.
Creating Light and Green Jobs In TheÂ Philippines
Solar Bottles in UgandaÂ
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