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Generate Light with Gravity – No Running Cost!
You'll have access to light, anywhere! The GravityLight is a non-electric solution that uses an elevated weight on a pulley system that slowly powers a generator as the weight falls to the ground, providing you with usable light. No batteries or sun needed, just hang it up and fill the bag with rocks or sand (about 26-1/2 lb).
According to the GravityLight Foundation, over one billion people around the world do not have access to electricity. That's why this company came up with an affordable, safe and eco-friendly light. Their goal is to lift families out of energy poverty and they have already started their efforts in Kenya.
How It Works!