Liter of Light

Liter of Light

Your Impact

Financing period: 17 July to 5 August 2019
With your help we will support the Liter of Light initiative as follows:

  • Financial

    We’ll support the Brazilian chapter “Un Litro de Luz” with the funds which we generate while the project is featured on Gexsi.

  • Media

    Storytelling about Liter of Light / Un Litro de Luz ist part of our continued media work.

Upcycling of PET bottles to fight energy poverty

Through a network of partnerships around the world, Liter of Light volunteers teach marginalized communities how to use recycled plastic bottles and locally sourced materials to illuminate their homes, businesses, and streets.

The technology is amazingly simple:  

You take a 1,5 liter PET bottle, fill it with water and some chlorine to keep the water clean, and then make a hole in the roof of the household & install the bottle – half outside half inside. The daylight that enters from above gets diffracted by the water and spreads the light into the room. During the day, it substitutes a 55 watt light bulb completely. The solution also works when the sky is clouded. There is still enough light getting inside the bottle, but of course the bottle will shine less brightly. The impact of installing these solar bulbs goes beyond providing light. It will lead to a better quality of life for the families, create new working opportunities and will reduce the carbon dioxide footprint.

Liter of Light is estimated to have installed more than 1 million lights in more than 15 countries, while having taught green skills to empower grassroots entrepreneurs at every stop. Liter of Light’s open source technology has been recognized by the UN and adopted for use in some UNHCR camps. 

More and more Liter of Light chapters have begun to develop kits to locally produce LED powered lamps which provide light also after sunset, e.g. for local street lighting. Typically, the upcycled PET bottles are used also for these upgraded solutions.

Who is behind the project?

Liter of Light is a grassroot movement, which is backed by the Global Lighting Project of the Myshelter Foundation, registered on the Philippines.


Why chosen

People 90%
Liter of Light empowers people to help themselves
Planet 80%
Upcycling combined with production with locally available goods and materials
Profit 75%
Self-sustaining system, based on volunteering and skill transfer
Innovation 80%
Amazingly simple technology, unknown before.
Win-win 70%
Positive references, but no personal contact with project yet.



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