open-source bulb

As magic as easy to install, and as many as you want. Similar to a 55W bulb, but without any electricity costs. It is elemental physics that takes care of refracting sunlight in 360º. A skylight suddenly appears in the ceiling. How is it that nobody had come up with the idea before?

The Solar Bottle Bulb (A Liter of Light_Isang Litrong Liwanag) consists of nothing else than a plastic bottle filled with water (and some drops of bleach to keep the liquid purified for up to 5 years). Developed in 2011 by MIT students and implemented by MyShelter Foundation for precarious housing in Manila, it provides a DIY ecological alternative for electric lighting. The users guide constitutes an open-source architectural manual, which allows the Solar Bottle Bulb to be replicated ad infinitum. It relies on local waste materials and basic skills as a new efficient tool for slum upgrading.

According to statistics from the National Electrification Commission in 2009, 3 million households still remain powerless outside Metro Manila. And even in the metro, families still continue to live in darkness. Meanwhile, the Bureau of Fire Protection (BFP) has reported that a large number of fire-related incidents involve faulty electrical connections. Informal settlements are high-risk areas, since the BFP does not conduct fire hazard inspections in these communities. >

[images> via laformación & Isang Litrong Liwanag]




  1. This is so wonderful. Thanks for posting.

  2. Kullaphut sene

    Good Idea !!! It awesome

  3. Brilliant… literally! I will share this with poor Indian villagers.

  4. Pingback: How to build a solar bottle bulb. |

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