IIT-Delhi is working on the project in collaboration with My Sister Foundation of India, a non-governmental organisation (NGO). The project titled "Liter of Light" has already provided 55W light to three households in the slums.
"The plastic coke and water bottles are filled with water and suspended from the roof of the house. With the simple concept of refraction of light from denser to rarer medium, the light is generated through the light from the sun," Revant Soni, a student working on the project told IANS.
In the slums, shanties are so close to each other that hardly any sunlight reaches there forcing dwellers to keep the lights on even in daytime. With these bottles, it helps cut down a lot on the electricity consumption. The project has been put into implementation following the research undertaken for three months.
"The first three installations were done by the students but now we have explained the procedure of installation to the community members and they would be completing the project," added Soni.
Around 25 students, including volunteers of IIT-Delhi, have worked for the development of the project.