This solution redesigns solar lighting for the developing world using plastic bottles. The simple design creates local jobs and teaches green skills.
A Liter of Light is a plastic bottle filled with water and a bit of bleach. Inserted through the roof, each solar bottle refracts sunlight with the intensity of a 55-watt light bulb. Using simple tools and basic carpentry skills, volunteers and local entrepreneurs can light up their communities for just $2. The nighttime upgrade with a solar panel retails at $10. Built by grassroots entrepreneurs and women’s groups in the Philippines, the cost of finished goods are reduced by 40%. Liter of Light has grown from one home in Laguna, Philippines, to 350,000 lights in 10 countries in just 20 months. Three hundred and seventy grassroots solar entrepreneurs are trained in 20 months, with each entrepreneur servicing an average of 11,000 homes per year.
Over 1 billion people around the world suer from lack of access to energy, including 15 million people in the Philippines. Energy poverty will only be solved by using local materials, easily replicable technologies, and livelihood-generating enterprises. Liter of Light is helping end energy poverty one bottle at a time.
Discarded plastic bottles are reused and upcycled to a daylighting system in 10 minutes.
Liter of Light prevents fires and inhalation of toxic fumes from kerosene lamps.
Each lamp saves households $10 monthly in electricity costs and 200 kilograms of carbon emissions per year.