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.
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.