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Light from saltwater
Bringing light into Philippine huts and houses with saltwater is an idea developed by Aisa and Raphael Mijeno and their Asian startup SALt.
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They want to replace kerosene lamps, which are dangerous to human health and the environment. In their lamp, a battery generates electricity from water and salt. With each filling of saltwater, the lamp has enough power to shine for eight hours a day for six months and can also charge a mobile phone. After that, the Philippine inventors’ battery needs to be refilled. In coastal regions, this can be done simply with seawater. Series production started recently.