Awaken The World Through Enlightened Media

Liter Of Light Project Turns Trash & Bleach Into Solar Lamps

How many times have you flipped on a light switch today? 10? 50? Maybe you’re lucky enough to work in an office building where the lights just stay on all day. For millions of people around the world, even the rising sun fails to bring such a reliable source of light. In the Philippines most people don’t have access to, or can’t afford electricity. Instead they rely on kerosene lamps which are dirty and dangerous, or they go without any artificial light at all. There homes are built so close together that even the sun can’t penetrate the darkness.

This might seem like an insurmountable problem, but for one ambitious MIT student the answer was both simple and cheap. Alfredo Moser came up with an idea for a solar lampfashioned out of recycled water bottles. Unlike other solar lanterns we’ve featured in the past, this one requires no wires, light bulbs, or costly solar panels. All it needs is water, bleach, and some sturdy hands to put it in place.


Image via

The concept uses discarded plastic soda bottles to create a light source that rivals that of a 60 watt incandescent bulb. The process is so simple, even a completely inexperienced DIYer can be successful: 1) find bottle, 2) fill bottled with clean water, 3) add a small amount bleach to said bottle. When placed through a piece of corrugated steel and attached to a hole in the roof, this simple cocktail creates an astounding amount of light. The process is safe and easy, and allows residents to have a cheap source of light without letting in bugs, rain, or heat. Watch the lamp in action:


The idea for the bleach-water bottle combo was further developed by Illac Diaz, a Filipino student who used it to create the Isang Litrong Liwanag (1 Liter of Light) project. According to the campaign’s official website, the bleach keeps the water algae and bacteria-free for over 5 years which gives each installation a longer life. The project is a part of the My Shelter Foundation group which invites homeowners, students and volunteers all over the world to create their own zero-cost makeshift solar lamps. Learn how you can support the project at


Leave a Reply