GravityLight doesn't need batteries or sunlight and costs nothing to run. It takes seconds to lift the weight that powers GravityLight, creating 20 minutes of light on its descent.
Combining kinetic and potential energy, GravityLight works by connecting an elevated weight — filled with rocks or sand — to a pulley system that slowly powers a generator as the weight falls to the ground.
For families living on just a few dollars a day, kerosene lamps can consume up to 30% of their income creating an ongoing poverty trap. With GravityLight, all you need is a weight.
GravityLight is tested and compliant with numerous industry standards. Producing a light over five times brighter than a typical open-wick kerosene lamp, GravityLight offers a safe alternative to kerosene.