The Gravity Light
Today, more than 1.5 billion people - about 21 percent of the world's population - have no reliable access to main electricity. In several countries, the grid is failing to keep pace with population growth, which means the number of people without reliable electricity will continue to grow. These people rely instead on biomass fuels - predominantly kerosene - for light. Hazardous and polluting, there is a real need to replace kerosene with a safer light that eliminates the many negative impacts of kerosene usage.
The Deciwatt Company has come up with an innovative way to produce safe, reliable, sustainable light with their creation of the Gravity Light. The Gravity Light is a small unit designed to hang from a low ceiling. The unit contains a system of gears rotated by a pulley that produce energy to power a light. The pulley is activated by attaching a weight to one end, typically a bag of rocks, sand, or dirt. Therefore the Gravity light has zero running costs, a bag to hold the weight comes with the system so all that is required of the user is to provide the dirt or rocks.
The gravity light can provide up to 30 minutes of continuous low light, after which time it can be immediately reactivated by lifting the weight and resetting the pulley. The system is also designed to serve other purposes; it can function as a bright reading light, as well as power a radio, and recharge batteries.
Deciwatt is currently in trial phase with the product. Hundreds of Gravity Lights have been donated to villages in Africa, to continue testing how they function in practical use.
Click here to learn more about Gravity Light or help support their mission.