Electricity-free "light bulbs" made from repurposed water bottles (video)

Bringing sustainable lighting solutions to homes in the slums of the Philippines.

"Small holes are snipped out of the tin roofs of the small dwelling in need. Inserted into these holes are plastic bottles which have been filled with water and a small amount of bleach (to prevent growth of algae). To keep those bottles in place, another tin square is affixed to this new "bulb" acting also as a kind of flashing to prevent rain water from seeping through. Since the light refracts as it hits the water this method illuminates windowless rooms with far greater success than just plain cut-outs. And while it is true that the bulbs only function in the daytime, the 55 watts generated are a helpful additional any light-deprived area. The life cycle of this bulb is 5 years, after which the fitting can easily be replaced with another bottle."


Watch a video of these repurposed "bulbs" in action here



Information via ReNest and Reuters; image via ReNest.

click to enlarge Electricity-free "light bulbs" made from repurposed water bottles (video) - Renest
Renest
Electricity-free "light bulbs" made from repurposed water bottles (video)

click to enlarge Electricity-free "light bulbs" made from repurposed water bottles (video) - Renest
Renest
Electricity-free "light bulbs" made from repurposed water bottles (video)
  • Renest

After reading this post's title, you're probably asking, 'How can this possibly work?' The answer: Plastic bottles filled with water put through holes in a roof, the liquid then refracting the light from the sun, thus filling a room with light.

These faux light bulbs are being fitted to the roofs of home in the slums in Manila, Philippines, and the surrounding region by volunteer programs sanctioned by the government in an effort to bring sustainable energy practices to these poor communities. These are areas where electricity and running water aren't luxuries — they're not even options.

This post on ReNest explains the process:

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