The world’s cheapest light bulb made of a plastic bottle and water shines in developing regions.

A plastic bottle, some water and some bleach are the sole components of the world cheapest bulb promoted by Isang Litrong Liwanag (A Liter of Light), the latest project of the MyShelter Foundation.  The project aims at bringing a million eco-friendly Solar Bottle Bulb  to disprivileged communities around the Philippines by 2012.

The bulb consist of a plastic bottle filled with water and bleach is installed on the roof of habitation and commerce.  The sunlight will make its way through the bottle which will then diffuse the light inside the room thanks to the liquid inside. The bleach is only here to prevent formation of algae and keep the water clean.  A simple hole on the roof to insert the bottle and some waterproofing makes it the world cheapest bulb.  The purpose of the bottle is to diffuse the light all over the room, unlike a simple hole on the roof. Of course, this solution is only available during the day, but still, it can either bring some light to dark area or help save on electricity during the day.

Want to watch the video: Bringing light to the poor, one liter at the time

About Myshelter foundation

MyShelter Foundation was established by Illac Diaz to create a system of sustainability and reliability through its capability-building and employment-generating projects.