This remarkable invention provides electrical power for up to 45 days using just half a litre of salt water.
Waterlight Uses Only Seawater To Bring Light to off-grid Rural Communities
Colombian green energy start-up E-Dina has developed a cordless lamp that converts salt water into electricity as a more reliable alternative to solar lamps in off-grid communities. The portable device, called WaterLight, needs to be filled with 500 millilitres of seawater – or even urine in emergency situations – to emit light for up to 45 days. Acting as a mini power generator, WATERLIGHT can also be used to charge a mobile phone or another small device via an integrated USB port.
21 TIPS: NO-COST WAYS TO SAVE ELECTRICITY
The best way to start saving on your electricity costs is to get smart with how you use electricity. Make these 21 no-cost changes in your home and you could save $500 or more a year, depending on a number of factors including the size of your home.