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GravityLight is an innovative device that provides instant light, as well as powering a string of up to 4 ancillary ‘SatLights’ that can be distributed around the home. Simultaneously able to power a radio, it does not need batteries or sunlight, as it is powered by the lifting of weights. This provides a clean, safe and affordable alternative to kerosene lamps which is universal and can be used all year round.
An innovative mechanism, GravityLight transforms the pull of gravity into electricity, providing instant power with the lift of a weight, for example, a bag of rocks or sand. It takes seconds to lift the weight that powers the innovation creating 20 minutes of light on its descent.
GravityLight provides both an ambient light as well as powering a string of up to 4 ‘SatLights’ for use around the home. This enables the whole household to use and benefit from GravityLight simultaneously.
Statistics show that over 1.1 billion people have no access to electricity, and millions more have an unreliable supply. This often forces them to use dangerous, polluting and expensive kerosene lamps for light.
Despite the growth of grid power, it is failing to keep up with population growth, especially in sub-Saharan Africa where 576 million people don’t have access to electricity. 81% of these people live in rural areas. Those living in dense urban areas, often pay for expensive, illegally ‘tapped’ electricity and experience frequent powercuts that can last for days.
According to SolarAid, families, living on less than 3 USD per day, spend up to 30% of their income on fuel for lighting. In addition to the expense, smoke and fumes from kerosene lamps are health hazards and dangerous.
These means that a family uses a kerosene lamp for up to approx. 4 hours a day, which limits time for study or work.
From an environmental perspective, kerosene lamps also contribute to localised warming: over a year, each kerosene lamp emits 150 kg CO2 (IFC) and black carbon, which has an even more intense and localised warming effect than CO2.
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