GravityLight - light from the lift of a weight

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2022-01-14 12:00:11

Hang a GravityLight from a wall or ceiling, fill the bag with rocks or sand and winch it up. You may not realise it, but you've just created a battery.

As the bag slowly falls to the ground it drives a generator through a gearbox, which provides direct electrical power for an LED, creating 20 minutes of light.

There are just under a billion people in the world who are still living without electricity. Many of them rely on dangerous, polluting and expensive kerosene lamps for light.

GravityLight was designed to provide a clean, affordable alternative to kerosene. Unlike other solutions, GravityLight has no reliance on external factors such as sunlight.